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GPT Luna model by OpenAI

GPT-6 Luna

OpenAI's most efficient GPT-6 model, for focused, high-volume tasks. API model gpt-6-luna, with a 1,050,000-token context on the OpenAI API; Microsoft Foundry caps input at 922,000 tokens.

Official page
Stack role
Foundation Model / Reasoning Engine
Offered in
6 products
Made by
OpenAI
Family
GPT Luna, version 6
Released
Sep 22, 2026 Current
In its family
The newest of 2 GPT Luna releases.

Strengths and weaknesses

Compare with other models Up to 3 beside GPT-6 Luna

  • GPT-6 Luna

Suggested comparisons

The models a buyer weighs against GPT-6 Luna, picked on list price and on Artificial Analysis's Intelligence Index of overall quality. Add one to draw it beside GPT-6 Luna.

GPT-6 LunaOpenAIThis page, always on the chart

Among the 40 current releases on this chart, GPT-6 Luna ranks 9th of 38 on Long context. On Computer use, Anthropic's runs on OSWorld 2.1 put GPT-6 Luna 38.3 points under Claude Opus 5.5, 35 points under Claude Sonnet 5.5 and 23.5 points under Claude Haiku 5.5. It ranks lowest on Hard reasoning, 33rd of 38 and Science, 20th of 24. Instruction following: not yet published by OpenAI or any independent evaluator, checked Nov 2, 2026.

Each axis is one public benchmark at one setting, on its own fixed 0 to 100 scale, so adding a model never moves another. A dotted bridge crosses a missing result, which is never a zero. A hollow mark is a result from another source: the maker's own figure or another lab's run, where the benchmark's usual source has not tested the model yet. The readout names it.

On the chart

  • GPT-6 LunaThis pageResults on 11 of 12 axes$0.10 / $0.50For prompts under 272K tokens; $0.20 / $0.75 at 272K or more, as OpenRouter lists it.124 tokens/sFirst token in 77 s

Prices and speeds read between Oct 26, 2026 and Oct 28, 2026.

GPT-6 Luna on each axis11 of 12 with a result

Beside the benchmarks

Cost, speed, capacity, quality and accuracy for GPT-6 Luna, with where each figure sits among the 40 models GILD tracks. These measures stand beside the chart and never feed it.

Cost

$0.068per task

Cost per task. One Intelligence Index task at list price, every token counted. Run at max effort.

Speed

127tokens a second

Output speed. How fast it writes once the answer starts. Run at max effort.

First token
94 s
Whole answer
98 s

Capacity

1.05Mtokens

Context window. The most one request can hold, as the maker states it.

Max output
128K
Reads
Text, Images

Quality

38.1of 100

Intelligence Index. One composite score across independent evaluations. Run at max effort.

GDPval knowledge work
1,445 Elo
Terminal-Bench 4.0
12.6%
Epoch Capabilities Index
157

Hallucination

79.3%wrong when it should say “I don’t know”

Hallucination rate. Of the questions it can't get right, how often it answers anyway. Lower is better. Run at max effort.

Knowledge accuracy
39.6%

Where you can get it

10of 19 routes

Routes offering it. Of the clouds, gateways and coding products GILD tracks, those offering it today.

Open weights
No
Licence
OpenAI Services Agreement
Every route and price

Figures from Artificial Analysis, OpenAI, Epoch AI and GILD's route matrix, read Oct 26 to Nov 1, 2026. Each measure's definition and source open under . Not yet published for GPT-6 Luna: Cached input.

Every value with its benchmark, run and source

GPT-6 Luna's result on each axis, with the benchmark, the setting and run, who reported it, the source and the date
AxisBenchmark and settingGPT-6 LunaRunSourceDate
Agentic codingTerminal-Bench 4.0Pass@1 averaged over 3 runs, mini-swe-agent harness13.6%GPT-6 LunaEffort: not published. Harness: mini-swe-agent.Vals.aiOct 24, 2026
CodeSciCodeSubproblem accuracy, pass@1, highest effort run54.6%GPT-6 Luna (Max)Effort: max. Harness: none.Artificial AnalysisOct 28, 2026
MathFrontierMath Tiers 1-3Accuracy, pass@1, highest effort run78.9%Effort: max. Harness: none.Epoch AISep 22, 2026
ScienceGPQA DiamondAccuracy, pass@1, highest effort run90.5%Effort: max. Harness: none.Epoch AISep 22, 2026
Hard reasoningHumanity's Last ExamAccuracy, text-only questions, no tools38.5%GPT-6 Luna (Max)Effort: max. Harness: none.Artificial AnalysisOct 28, 2026
Tool useAutomationBench-AAScore, Artificial Analysis run53.2%GPT-6 Luna (Max)Effort: max. Harness: Artificial Analysis AutomationBench harness.Artificial AnalysisOct 28, 2026
Computer useOSWorld 2.1Partial score, offline 82-task subset, v2.1 release. Anthropic's run of GPT-6 Luna through OpenAI's API with OpenAI's context compaction, 500 steps, averaged over five attempts, from the Claude Haiku 5.5 system card.Stands in for OSWorld 2.1, partial score, full 108-task set, v2.1 release, which has no run of GPT-6 Luna yet.48.9%GPT-6 LunaEffort: max. Harness: Anthropic computer-use harness.Not drawn: OpenAI 52.7% in its maker's own harness, Sep 22, 2026. SourceNot drawn: OpenAI 55.5% in its maker's own harness, Oct 26, 2026. SourceAnthropicRun by AnthropicOct 7, 2026
Long contextAA-LCR v1.1Accuracy, Artificial Analysis run83.3%GPT-6 Luna (Max)Effort: max. Harness: none.Artificial AnalysisOct 28, 2026
MultimodalMMMU-ProOverall accuracy, no tools79.7%GPT-6 Luna (Max)Effort: max. Harness: none.Artificial AnalysisOct 28, 2026
FactualityAA-Omniscience AccuracyAccuracy, Artificial Analysis run39.6%Hallucination rate 79.3% in the same run (lower is better)GPT-6 Luna (Max)Effort: max. Harness: none.Artificial AnalysisOct 28, 2026
Answers in fullSpeechMap% Complete over 2,120 contested requests, reasoning-on entry. SpeechMap tested it through OpenRouter at medium reasoning and counted 27.4% of requests denied and 9.1% evaded.63.4%0.1% of requests failed at the provider and count against itEffort: medium. Harness: none.SpeechMap.AIOct 27, 2026
Instruction followingMultiChallengeAccuracy, Scale AI runNot yet published by OpenAI or any independent evaluator, checked Nov 2, 2026

Price and speed

  • GPT-6 Luna lists at $0.10 per million input tokens and $0.50 per million output tokens. For prompts under 272K tokens; $0.20 / $0.75 at 272K or more, as OpenRouter lists it. OpenAI pricing, Oct 26, 2026.
  • GPT-6 Luna, at max effort, writes 124.3 output tokens per second on OpenAI's API, and its first token arrives 77 s after the request. Artificial Analysis, Oct 28, 2026.
  • Fastest on the chart is the shortest time to a 500-token answer: time to first token plus 500 tokens at the median output speed.

Every model with a result, axis by axis

57 models. A maker's own figure and another lab's run are marked with their benchmark; a missing result reads "Not yet published", never zero.

The result of every model GILD has benchmark results for, on each of the 12 axes. A vendor-reported value is marked. A model's run notes open under its row from its name, each with the axes it covers.
ModelAgentic codingCodeMathScienceHard reasoningTool useComputer useLong contextMultimodalFactualityAnswers in fullInstructions
GPT-6 Luna13.6%54.6%78.9%90.5%38.5%53.2%48.9%Run by AnthropicOSWorld 2.183.3%79.7%39.6%63.4%Not yet published
GPT-6.1 Terra49.5%55.1%90.9%94.3%46.2%60.2%74.2%Reported by OpenAIOSWorld 2.182.7%84.7%47.6%Not yet published74.2%
GPT-6.1 Sol55.1%54.2%93.7%95.4%52.9%64.9%78%Reported by OpenAIOSWorld 2.183%86%61.8%69.5%82%
GPT-6 Astra59.6%56.5%93.7%95.8%54.7%68.5%75.8%Run by Meta80.7%86.9%61.6%68.2%Not yet published
GPT-5.6 Sol37.9%57.1%89.1%93.5%49.5%60.1%62.7%Run by OSWorld teamOSWorld 2.084%83.4%69.7%Run by Epoch AISimpleQA VerifiedNot yet published72.7%Run by Artificial AnalysisIFBench
GPT-5.6 Terra22.7%55%86%93.3%42.9%59.6%Not yet published83%80.7%42.3%Not yet published71.2%Run by Artificial AnalysisIFBench
GPT-5.6 Luna11.6%53.6%82.1%91.6%39.5%50.2%Not yet published83.7%78.6%41%Run by Epoch AISimpleQA VerifiedNot yet publishedNot yet published
GPT-5.514.6%Run by Artificial AnalysisTerminal-Bench 4.055.8%85.3%93.5%Run by Artificial Analysis45.8%47.3%49.5%Run by OSWorld teamOSWorld 2.084.3%79.9%63%Run by Epoch AISimpleQA VerifiedNot yet published75.9%Run by Artificial AnalysisIFBench
GPT-5.4Not yet publishedNot yet published78.6%93.3%43.7%Not yet publishedNot yet published82%78.4%Not yet publishedNot yet published73.9%Run by Artificial AnalysisIFBench
gpt-oss-120b14.2%Run by Terminal-Bench (via Epoch AI)Terminal-Bench 2.034%88.9%Run by Epoch AIOTIS Mock AIME 2024-202575.8%19.6%0.2%Not yet published52%Not yet published16.8%Reported by OpenAISimpleQA36.3%45.3%
GPT-6 Sol44.4%57.6%89.8%94.3%47.9%61.6%64.4%Reported by OpenAIOSWorld 2.083.7%82.9%54.5%64%Not yet published
GPT-5.3-CodexNot yet publishedNot yet publishedNot yet published91.5%Run by Artificial Analysis42.5%Not yet publishedNot yet published83.3%78.5%Not yet publishedNot yet published75.4%Run by Artificial AnalysisIFBench
Claude Haiku 5.536.4%55%75.1%89.6%44.4%35.4%72.4%Reported by AnthropicOSWorld 2.182.7%Not yet published34.7%78.8%67.7%
Claude Sonnet 5.564.1%61%88.8%95.6%55%71.8%80.1%Reported by Anthropic82.7%Not yet published51.5%81.6%Not yet published
Claude Opus 5.565.2%66.9%91.2%90.6%61.4%69.5%81.8%Reported by Anthropic84.7%87.7%65.5%82.8%Not yet published
Claude Fable 5.158.1%63.1%90.2%93.4%Run by Vals.ai59.1%59.4%80.7%Reported by Anthropic85.3%86.3%Run by Moonshot AI68.4%72.4%Not yet published
Claude Opus 553.5%56.4%85.6%93.9%54.9%56.6%77.7%79.3%84.7%60.9%73.7%Not yet published
Claude Sonnet 510.6%54.3%65.6%80.3%41.3%36.5%57%Reported by Anthropic82%77.3%40.1%Not yet publishedNot yet published
Claude Fable 541.4%61%87%85.9%55.5%54.1%Not yet published82.3%Not yet published65.4%64.8%63.5%Run by Artificial AnalysisIFBench
Claude Opus 4.823.2%54.4%80%91%48.7%45.6%54.8%Run by OSWorld teamOSWorld 2.077.7%Not yet published48.8%67.4%62.2%Run by Artificial AnalysisIFBench
Claude Opus 4.7Not yet published54.5%70.2%86.4%42.3%Not yet published48.9%Run by OSWorld teamOSWorld 2.078.7%78.8%48.9%70.2%58.6%Run by Artificial AnalysisIFBench
Claude Sonnet 4.63%Run by Artificial AnalysisTerminal-Bench 4.050.1%71.1%Run by Epoch AIOTIS Mock AIME 2024-202578.8%33.6%20.1%41.5%Run by OSWorld teamOSWorld 2.080%73.3%40.9%35.8%56.6%Run by Artificial AnalysisIFBench
Claude Opus 4.6Not yet publishedNot yet published66%88.4%39.9%Not yet publishedNot yet published78%75.4%47%59.9%37.2%
Claude Opus 4.5Not yet publishedNot yet published34.4%86%30.1%Not yet publishedNot yet published77.3%74%46.6%57.5%59%
Claude Haiku 4.5Not yet published42.2%66.7%Run by Epoch AIOTIS Mock AIME 2024-202571.2%10.4%3.2%Not yet published74.3%58.6%18%24.7%50.5%
Claude Sonnet 4.5Not yet published45.7%23.9%82.3%17.8%14.1%Not yet published72.3%68.7%32.9%31.4%55.3%
Gemini 4 Argon57.6%61.8%86%96.4%57.1%77.5%69.2%Reported by GoogleOSWorld 2.079.7%Not yet published48.3%87%78.7%
Gemini 3.8 Flash19.7%56.6%68.4%95.4%47.8%59.9%59%Reported by GoogleOSWorld 2.081.3%85.6%50.5%86.1%Not yet published
Gemma 4 31BNot yet published45.5%Not yet published85.7%Run by Artificial AnalysisGPQA Diamond23.6%4.9%Not yet published69.7%73.4%10.4%Run by Epoch AISimpleQA Verified82.3%75.6%Run by Artificial AnalysisIFBench
Gemini 3.1 Pro Preview2.5%58.7%59.6%94.4%47%35.4%Not yet published82%82.4%54.9%59.9%71.4%
Gemini 3.6 Flash7.1%Run by Artificial AnalysisTerminal-Bench 4.053.4%58.9%94.1%40.8%53%83%Reported by GoogleOSWorld-Verified80%83.2%66.2%Run by Epoch AISimpleQA Verified87.2%Not yet published
DeepSeek V4.1 Flash31.8%55.9%71.2%93.2%43.3%66.6%69.3%Run by Moonshot AIOSWorld 2.182.7%80.6%39.6%Not yet published74.9%
DeepSeek V4 Pro14.1%51%64.6%91.7%41%56.7%Not yet published80.3%Not yet published45.2%72%Not yet published
Kimi K3.1 Pro63.6%60.8%Not yet published94.2%Reported by Moonshot AI52.5%73.3%79.6%Reported by Moonshot AIOSWorld 2.186.3%83.9%48.9%Not yet publishedNot yet published
Kimi K317.2%59.5%72.2%93.1%46.9%58.3%Not yet published88.7%80.5%50.6%Run by Epoch AISimpleQA Verified65.9%Not yet published
Kimi K2.7 Code1%Run by Artificial AnalysisTerminal-Bench 4.047.8%54%87.9%35%24.5%Not yet published79.3%Not yet published36.5%Run by Epoch AISimpleQA VerifiedNot yet published63.1%Run by Artificial AnalysisIFBench
Mistral Large 424.7%Run by Artificial AnalysisTerminal-Bench 4.0Not yet publishedNot yet publishedNot yet publishedNot yet published57.8%Not yet publishedNot yet publishedNot yet published26%Not yet publishedNot yet published
Mistral Medium 3.50%Run by Artificial AnalysisTerminal-Bench 4.040.2%Not yet published74.8%Run by Artificial AnalysisGPQA Diamond13.8%6.3%Not yet published69.3%64.9%23%70.5%68.8%Run by Artificial AnalysisIFBench
Grok 4.728.8%57.4%53%92.7%43.1%65.6%Not yet published76.7%Not yet published42.7%64.1%Not yet published
Grok 4.617.2%56.5%66%93.2%42.9%66.7%Not yet published80.3%Not yet published48.9%Run by Epoch AISimpleQA Verified83.6%Not yet published
Grok 4.58.6%55%57.2%93.4%42.7%57.9%Not yet published79.3%80.4%48.3%Run by Epoch AISimpleQA Verified93.1%Not yet published
MiniMax M3.1 Flash25.3%53.4%Not yet publishedNot yet published48%72.5%61.7%Reported by MiniMaxOSWorld 2.079.7%79.1%45.1%Not yet publishedNot yet published
Mercury 33%Not yet publishedNot yet publishedNot yet publishedNot yet publishedNot yet publishedNot yet publishedNot yet publishedNot yet publishedNot yet publishedNot yet publishedNot yet published
GLM-5.3-Flash37.4%51.6%55.8%90.2%39.9%60.4%59.1%Reported by Z.aiOSWorld 2.080%86%Run by Vals.aiMMMU-Pro28.2%65.4%Not yet published
GLM-5.338.9%59%68.8%90.9%42.3%62.2%Not yet published79.7%Not yet published32.3%71.5%Not yet published
GLM-5.21%Run by Artificial AnalysisTerminal-Bench 4.051.2%59.2%Not yet published41.1%28.4%Not yet published78.3%Not yet published34.2%Run by Epoch AISimpleQA VerifiedNot yet published73.3%Run by Artificial AnalysisIFBench
Muse Spark Open6.6%58.4%69.8%88.6%43.9%49.7%80.4%Reported by MetaOSWorld-Verified78.3%80.9%42%Not yet published74.2%
Muse Wonder49.5%60.3%82.1%Not yet published50.1%68.1%72.6%Reported by Meta80.7%Not yet published38%42.7%Not yet published
Muse Spark 1.310.6%58.8%74%93.5%Run by Artificial AnalysisGPQA Diamond48.7%57.9%69.6%83%82%38%25.8%Not yet published
Llama 4 ScoutNot yet published21.3%7.8%Run by Epoch AIOTIS Mock AIME 2024-202551.8%3.8%0.2%Not yet published27.7%52.9%Not yet published70.1%39.5%Run by Artificial AnalysisIFBench
Llama 4 MaverickNot yet published31.7%20.6%Run by Epoch AIOTIS Mock AIME 2024-202567%4.9%0.2%Not yet published50%62.1%Not yet published58.3%43%Run by Artificial AnalysisIFBench
Qwen3.8 27B5.6%Run by Artificial AnalysisTerminal-Bench 4.046.6%Not yet published90.5%Run by Artificial AnalysisGPQA Diamond33.9%48.2%84.3%Reported by AlibabaOSWorld-Verified82%76.3%17.3%Not yet published79.5%Reported by AlibabaIFBench
Qwen3.8 Max38.9%52.1%65.6%92.3%43.1%56.2%Not yet published80.3%82.8%29.5%65.3%Not yet published
MiMo-V2.6-Pro31.3%60.9%Not yet publishedNot yet published49.4%58.6%82%Reported by XiaomiOSWorld-Verified86.3%Not yet published34.8%66.5%Not yet published
MiMo-V2.6-Flash24.2%51.3%Not yet publishedNot yet published35.1%64.1%80.8%Reported by XiaomiOSWorld-Verified74.3%73.1%27.2%66.9%Not yet published
Ling 3.1 Flash32.8%Run by Artificial AnalysisTerminal-Bench 4.056.8%Not yet publishedNot yet published43.5%67.5%Not yet published82.3%Not yet published26.5%Not yet publishedNot yet published
Step 5 Preview31.8%58.9%Not yet published93.5%Reported by StepFunGPQA Diamond46.5%51%Not yet published88.3%76.4%36.4%59.7%Not yet published

Agentic codingTerminal-Bench 4.0

  1. Claude Opus 5.565.2%
  2. Claude Sonnet 5.564.1%
  3. Kimi K3.1 Pro63.6%
  4. GPT-6 Astra59.6%
  5. Claude Fable 5.158.1%
  6. Gemini 4 Argon57.6%
  7. GPT-6.1 Sol55.1%
  8. Claude Opus 553.5%
  9. GPT-6.1 Terra49.5%
  10. Muse Wonder49.5%
  11. GPT-6 Sol44.4%
  12. Claude Fable 541.4%
  13. GLM-5.338.9%
  14. Qwen3.8 Max38.9%
  15. GPT-5.6 Sol37.9%
  16. GLM-5.3-Flash37.4%
  17. Claude Haiku 5.536.4%
  18. DeepSeek V4.1 Flash31.8%
  19. Step 5 Preview31.8%
  20. MiMo-V2.6-Pro31.3%
  21. Grok 4.728.8%
  22. MiniMax M3.1 Flash25.3%
  23. MiMo-V2.6-Flash24.2%
  24. Claude Opus 4.823.2%
  25. GPT-5.6 Terra22.7%
  26. Gemini 3.8 Flash19.7%
  27. Kimi K317.2%
  28. Grok 4.617.2%
  29. DeepSeek V4 Pro14.1%
  30. GPT-6 Luna13.6%
  31. GPT-5.6 Luna11.6%
  32. Claude Sonnet 510.6%
  33. Muse Spark 1.310.6%
  34. Grok 4.58.6%
  35. Muse Spark Open6.6%
  36. Mercury 33%
  37. Gemini 3.1 Pro Preview2.5%
  38. Ling 3.1 Flash32.8%Artificial Analysis's run, Terminal-Bench 4.0
  39. Mistral Large 424.7%Artificial Analysis's run, Terminal-Bench 4.0
  40. GPT-5.514.6%Artificial Analysis's run, Terminal-Bench 4.0
  41. gpt-oss-120b14.2%Terminal-Bench's run, Terminal-Bench 2.0
  42. Gemini 3.6 Flash7.1%Artificial Analysis's run, Terminal-Bench 4.0
  43. Qwen3.8 27B5.6%Artificial Analysis's run, Terminal-Bench 4.0
  44. Claude Sonnet 4.63%Artificial Analysis's run, Terminal-Bench 4.0
  45. Kimi K2.7 Code1%Artificial Analysis's run, Terminal-Bench 4.0
  46. GLM-5.21%Artificial Analysis's run, Terminal-Bench 4.0
  47. Mistral Medium 3.50%Artificial Analysis's run, Terminal-Bench 4.0

The other models in the grid have no result on Terminal-Bench 4.0 yet.

CodeSciCode

  1. Claude Opus 5.566.9%
  2. Claude Fable 5.163.1%
  3. Gemini 4 Argon61.8%
  4. Claude Sonnet 5.561%
  5. Claude Fable 561%
  6. MiMo-V2.6-Pro60.9%
  7. Kimi K3.1 Pro60.8%
  8. Muse Wonder60.3%
  9. Kimi K359.5%
  10. GLM-5.359%
  11. Step 5 Preview58.9%
  12. Muse Spark 1.358.8%
  13. Gemini 3.1 Pro Preview58.7%
  14. Muse Spark Open58.4%
  15. GPT-6 Sol57.6%
  16. Grok 4.757.4%
  17. GPT-5.6 Sol57.1%
  18. Ling 3.1 Flash56.8%
  19. Gemini 3.8 Flash56.6%
  20. GPT-6 Astra56.5%
  21. Grok 4.656.5%
  22. Claude Opus 556.4%
  23. DeepSeek V4.1 Flash55.9%
  24. GPT-5.555.8%
  25. GPT-6.1 Terra55.1%
  26. GPT-5.6 Terra55%
  27. Claude Haiku 5.555%
  28. Grok 4.555%
  29. GPT-6 Luna54.6%
  30. Claude Opus 4.754.5%
  31. Claude Opus 4.854.4%
  32. Claude Sonnet 554.3%
  33. GPT-6.1 Sol54.2%
  34. GPT-5.6 Luna53.6%
  35. Gemini 3.6 Flash53.4%
  36. MiniMax M3.1 Flash53.4%
  37. Qwen3.8 Max52.1%
  38. GLM-5.3-Flash51.6%
  39. MiMo-V2.6-Flash51.3%
  40. GLM-5.251.2%
  41. DeepSeek V4 Pro51%
  42. Claude Sonnet 4.650.1%
  43. Kimi K2.7 Code47.8%
  44. Qwen3.8 27B46.6%
  45. Claude Sonnet 4.545.7%
  46. Gemma 4 31B45.5%
  47. Claude Haiku 4.542.2%
  48. Mistral Medium 3.540.2%
  49. gpt-oss-120b34%
  50. Llama 4 Maverick31.7%
  51. Llama 4 Scout21.3%

The other models in the grid have no result on SciCode yet.

MathFrontierMath Tiers 1-3

  1. GPT-6.1 Sol93.7%
  2. GPT-6 Astra93.7%
  3. Claude Opus 5.591.2%
  4. GPT-6.1 Terra90.9%
  5. Claude Fable 5.190.2%
  6. GPT-6 Sol89.8%
  7. GPT-5.6 Sol89.1%
  8. Claude Sonnet 5.588.8%
  9. Claude Fable 587%
  10. GPT-5.6 Terra86%
  11. Gemini 4 Argon86%
  12. Claude Opus 585.6%
  13. GPT-5.585.3%
  14. GPT-5.6 Luna82.1%
  15. Muse Wonder82.1%
  16. Claude Opus 4.880%
  17. GPT-6 Luna78.9%
  18. GPT-5.478.6%
  19. Claude Haiku 5.575.1%
  20. Muse Spark 1.374%
  21. Kimi K372.2%
  22. DeepSeek V4.1 Flash71.2%
  23. Claude Opus 4.770.2%
  24. Muse Spark Open69.8%
  25. GLM-5.368.8%
  26. Gemini 3.8 Flash68.4%
  27. Claude Opus 4.666%
  28. Grok 4.666%
  29. Claude Sonnet 565.6%
  30. Qwen3.8 Max65.6%
  31. DeepSeek V4 Pro64.6%
  32. Gemini 3.1 Pro Preview59.6%
  33. GLM-5.259.2%
  34. Gemini 3.6 Flash58.9%
  35. Grok 4.557.2%
  36. GLM-5.3-Flash55.8%
  37. Kimi K2.7 Code54%
  38. Grok 4.753%
  39. Claude Opus 4.534.4%
  40. Claude Sonnet 4.523.9%
  41. gpt-oss-120b88.9%Epoch AI's run, OTIS Mock AIME 2024-2025
  42. Claude Sonnet 4.671.1%Epoch AI's run, OTIS Mock AIME 2024-2025
  43. Claude Haiku 4.566.7%Epoch AI's run, OTIS Mock AIME 2024-2025
  44. Llama 4 Maverick20.6%Epoch AI's run, OTIS Mock AIME 2024-2025
  45. Llama 4 Scout7.8%Epoch AI's run, OTIS Mock AIME 2024-2025

The other models in the grid have no result on FrontierMath Tiers 1-3 yet.

ScienceGPQA Diamond

  1. Gemini 4 Argon96.4%
  2. GPT-6 Astra95.8%
  3. Claude Sonnet 5.595.6%
  4. GPT-6.1 Sol95.4%
  5. Gemini 3.8 Flash95.4%
  6. Gemini 3.1 Pro Preview94.4%
  7. GPT-6.1 Terra94.3%
  8. GPT-6 Sol94.3%
  9. Gemini 3.6 Flash94.1%
  10. Claude Opus 593.9%
  11. GPT-5.6 Sol93.5%
  12. Grok 4.593.4%
  13. GPT-5.6 Terra93.3%
  14. GPT-5.493.3%
  15. DeepSeek V4.1 Flash93.2%
  16. Grok 4.693.2%
  17. Kimi K393.1%
  18. Grok 4.792.7%
  19. Qwen3.8 Max92.3%
  20. DeepSeek V4 Pro91.7%
  21. GPT-5.6 Luna91.6%
  22. Claude Opus 4.891%
  23. GLM-5.390.9%
  24. Claude Opus 5.590.6%
  25. GPT-6 Luna90.5%
  26. GLM-5.3-Flash90.2%
  27. Claude Haiku 5.589.6%
  28. Muse Spark Open88.6%
  29. Claude Opus 4.688.4%
  30. Kimi K2.7 Code87.9%
  31. Claude Opus 4.786.4%
  32. Claude Opus 4.586%
  33. Claude Fable 585.9%
  34. Claude Sonnet 4.582.3%
  35. Claude Sonnet 580.3%
  36. Claude Sonnet 4.678.8%
  37. gpt-oss-120b75.8%
  38. Claude Haiku 4.571.2%
  39. Llama 4 Maverick67%
  40. Llama 4 Scout51.8%
  41. Kimi K3.1 Pro94.2%Moonshot AI's own figure
  42. GPT-5.593.5%Artificial Analysis's run
  43. Muse Spark 1.393.5%Artificial Analysis's run, GPQA Diamond
  44. Step 5 Preview93.5%StepFun's own figure, GPQA Diamond
  45. Claude Fable 5.193.4%Vals.ai's run
  46. GPT-5.3-Codex91.5%Artificial Analysis's run
  47. Qwen3.8 27B90.5%Artificial Analysis's run, GPQA Diamond
  48. Gemma 4 31B85.7%Artificial Analysis's run, GPQA Diamond
  49. Mistral Medium 3.574.8%Artificial Analysis's run, GPQA Diamond

The other models in the grid have no result on GPQA Diamond yet.

Hard reasoningHumanity's Last Exam

  1. Claude Opus 5.561.4%
  2. Claude Fable 5.159.1%
  3. Gemini 4 Argon57.1%
  4. Claude Fable 555.5%
  5. Claude Sonnet 5.555%
  6. Claude Opus 554.9%
  7. GPT-6 Astra54.7%
  8. GPT-6.1 Sol52.9%
  9. Kimi K3.1 Pro52.5%
  10. Muse Wonder50.1%
  11. GPT-5.6 Sol49.5%
  12. MiMo-V2.6-Pro49.4%
  13. Claude Opus 4.848.7%
  14. Muse Spark 1.348.7%
  15. MiniMax M3.1 Flash48%
  16. GPT-6 Sol47.9%
  17. Gemini 3.8 Flash47.8%
  18. Gemini 3.1 Pro Preview47%
  19. Kimi K346.9%
  20. Step 5 Preview46.5%
  21. GPT-6.1 Terra46.2%
  22. GPT-5.545.8%
  23. Claude Haiku 5.544.4%
  24. Muse Spark Open43.9%
  25. GPT-5.443.7%
  26. Ling 3.1 Flash43.5%
  27. DeepSeek V4.1 Flash43.3%
  28. Grok 4.743.1%
  29. Qwen3.8 Max43.1%
  30. GPT-5.6 Terra42.9%
  31. Grok 4.642.9%
  32. Grok 4.542.7%
  33. GPT-5.3-Codex42.5%
  34. Claude Opus 4.742.3%
  35. GLM-5.342.3%
  36. Claude Sonnet 541.3%
  37. GLM-5.241.1%
  38. DeepSeek V4 Pro41%
  39. Gemini 3.6 Flash40.8%
  40. Claude Opus 4.639.9%
  41. GLM-5.3-Flash39.9%
  42. GPT-5.6 Luna39.5%
  43. GPT-6 Luna38.5%
  44. MiMo-V2.6-Flash35.1%
  45. Kimi K2.7 Code35%
  46. Qwen3.8 27B33.9%
  47. Claude Sonnet 4.633.6%
  48. Claude Opus 4.530.1%
  49. Gemma 4 31B23.6%
  50. gpt-oss-120b19.6%
  51. Claude Sonnet 4.517.8%
  52. Mistral Medium 3.513.8%
  53. Claude Haiku 4.510.4%
  54. Llama 4 Maverick4.9%
  55. Llama 4 Scout3.8%

The other models in the grid have no result on Humanity's Last Exam yet.

Tool useAutomationBench-AA

  1. Gemini 4 Argon77.5%
  2. Kimi K3.1 Pro73.3%
  3. MiniMax M3.1 Flash72.5%
  4. Claude Sonnet 5.571.8%
  5. Claude Opus 5.569.5%
  6. GPT-6 Astra68.5%
  7. Muse Wonder68.1%
  8. Ling 3.1 Flash67.5%
  9. Grok 4.666.7%
  10. DeepSeek V4.1 Flash66.6%
  11. Grok 4.765.6%
  12. GPT-6.1 Sol64.9%
  13. MiMo-V2.6-Flash64.1%
  14. GLM-5.362.2%
  15. GPT-6 Sol61.6%
  16. GLM-5.3-Flash60.4%
  17. GPT-6.1 Terra60.2%
  18. GPT-5.6 Sol60.1%
  19. Gemini 3.8 Flash59.9%
  20. GPT-5.6 Terra59.6%
  21. Claude Fable 5.159.4%
  22. MiMo-V2.6-Pro58.6%
  23. Kimi K358.3%
  24. Grok 4.557.9%
  25. Muse Spark 1.357.9%
  26. Mistral Large 457.8%
  27. DeepSeek V4 Pro56.7%
  28. Claude Opus 556.6%
  29. Qwen3.8 Max56.2%
  30. Claude Fable 554.1%
  31. GPT-6 Luna53.2%
  32. Gemini 3.6 Flash53%
  33. Step 5 Preview51%
  34. GPT-5.6 Luna50.2%
  35. Muse Spark Open49.7%
  36. Qwen3.8 27B48.2%
  37. GPT-5.547.3%
  38. Claude Opus 4.845.6%
  39. Claude Sonnet 536.5%
  40. Claude Haiku 5.535.4%
  41. Gemini 3.1 Pro Preview35.4%
  42. GLM-5.228.4%
  43. Kimi K2.7 Code24.5%
  44. Claude Sonnet 4.620.1%
  45. Claude Sonnet 4.514.1%
  46. Mistral Medium 3.56.3%
  47. Gemma 4 31B4.9%
  48. Claude Haiku 4.53.2%
  49. gpt-oss-120b0.2%
  50. Llama 4 Scout0.2%
  51. Llama 4 Maverick0.2%

The other models in the grid have no result on AutomationBench-AA yet.

Computer useOSWorld 2.1

  1. Claude Opus 577.7%
  2. Muse Spark 1.369.6%
  3. Qwen3.8 27B84.3%Alibaba's own figure, OSWorld-Verified
  4. Gemini 3.6 Flash83%Google's own figure, OSWorld-Verified
  5. MiMo-V2.6-Pro82%Xiaomi's own figure, OSWorld-Verified
  6. Claude Opus 5.581.8%Anthropic's own figure
  7. MiMo-V2.6-Flash80.8%Xiaomi's own figure, OSWorld-Verified
  8. Claude Fable 5.180.7%Anthropic's own figure
  9. Muse Spark Open80.4%Meta's own figure, OSWorld-Verified
  10. Claude Sonnet 5.580.1%Anthropic's own figure
  11. Kimi K3.1 Pro79.6%Moonshot AI's own figure, OSWorld 2.1
  12. GPT-6.1 Sol78%OpenAI's own figure, OSWorld 2.1
  13. GPT-6 Astra75.8%Meta's run
  14. GPT-6.1 Terra74.2%OpenAI's own figure, OSWorld 2.1
  15. Muse Wonder72.6%Meta's own figure
  16. Claude Haiku 5.572.4%Anthropic's own figure, OSWorld 2.1
  17. DeepSeek V4.1 Flash69.3%Moonshot AI's run, OSWorld 2.1
  18. Gemini 4 Argon69.2%Google's own figure, OSWorld 2.0
  19. GPT-6 Sol64.4%OpenAI's own figure, OSWorld 2.0
  20. GPT-5.6 Sol62.7%OSWorld team's run, OSWorld 2.0
  21. MiniMax M3.1 Flash61.7%MiniMax's own figure, OSWorld 2.0
  22. GLM-5.3-Flash59.1%Z.ai's own figure, OSWorld 2.0
  23. Gemini 3.8 Flash59%Google's own figure, OSWorld 2.0
  24. Claude Sonnet 557%Anthropic's own figure
  25. Claude Opus 4.854.8%OSWorld team's run, OSWorld 2.0
  26. GPT-5.549.5%OSWorld team's run, OSWorld 2.0
  27. GPT-6 Luna48.9%Anthropic's run, OSWorld 2.1
  28. Claude Opus 4.748.9%OSWorld team's run, OSWorld 2.0
  29. Claude Sonnet 4.641.5%OSWorld team's run, OSWorld 2.0

The other models in the grid have no result on OSWorld 2.1 yet.

Long contextAA-LCR v1.1

  1. Kimi K388.7%
  2. Step 5 Preview88.3%
  3. Kimi K3.1 Pro86.3%
  4. MiMo-V2.6-Pro86.3%
  5. Claude Fable 5.185.3%
  6. Claude Opus 5.584.7%
  7. GPT-5.584.3%
  8. GPT-5.6 Sol84%
  9. GPT-5.6 Luna83.7%
  10. GPT-6 Sol83.7%
  11. GPT-6 Luna83.3%
  12. GPT-5.3-Codex83.3%
  13. GPT-6.1 Sol83%
  14. GPT-5.6 Terra83%
  15. Muse Spark 1.383%
  16. GPT-6.1 Terra82.7%
  17. Claude Haiku 5.582.7%
  18. Claude Sonnet 5.582.7%
  19. DeepSeek V4.1 Flash82.7%
  20. Claude Fable 582.3%
  21. Ling 3.1 Flash82.3%
  22. GPT-5.482%
  23. Claude Sonnet 582%
  24. Gemini 3.1 Pro Preview82%
  25. Qwen3.8 27B82%
  26. Gemini 3.8 Flash81.3%
  27. GPT-6 Astra80.7%
  28. Muse Wonder80.7%
  29. DeepSeek V4 Pro80.3%
  30. Grok 4.680.3%
  31. Qwen3.8 Max80.3%
  32. Claude Sonnet 4.680%
  33. Gemini 3.6 Flash80%
  34. GLM-5.3-Flash80%
  35. Gemini 4 Argon79.7%
  36. MiniMax M3.1 Flash79.7%
  37. GLM-5.379.7%
  38. Claude Opus 579.3%
  39. Kimi K2.7 Code79.3%
  40. Grok 4.579.3%
  41. Claude Opus 4.778.7%
  42. GLM-5.278.3%
  43. Muse Spark Open78.3%
  44. Claude Opus 4.678%
  45. Claude Opus 4.877.7%
  46. Claude Opus 4.577.3%
  47. Grok 4.776.7%
  48. Claude Haiku 4.574.3%
  49. MiMo-V2.6-Flash74.3%
  50. Claude Sonnet 4.572.3%
  51. Gemma 4 31B69.7%
  52. Mistral Medium 3.569.3%
  53. gpt-oss-120b52%
  54. Llama 4 Maverick50%
  55. Llama 4 Scout27.7%

The other models in the grid have no result on AA-LCR v1.1 yet.

MultimodalMMMU-Pro

  1. Claude Opus 5.587.7%
  2. GPT-6 Astra86.9%
  3. GPT-6.1 Sol86%
  4. Gemini 3.8 Flash85.6%
  5. GPT-6.1 Terra84.7%
  6. Claude Opus 584.7%
  7. Kimi K3.1 Pro83.9%
  8. GPT-5.6 Sol83.4%
  9. Gemini 3.6 Flash83.2%
  10. GPT-6 Sol82.9%
  11. Qwen3.8 Max82.8%
  12. Gemini 3.1 Pro Preview82.4%
  13. Muse Spark 1.382%
  14. Muse Spark Open80.9%
  15. GPT-5.6 Terra80.7%
  16. DeepSeek V4.1 Flash80.6%
  17. Kimi K380.5%
  18. Grok 4.580.4%
  19. GPT-5.579.9%
  20. GPT-6 Luna79.7%
  21. MiniMax M3.1 Flash79.1%
  22. Claude Opus 4.778.8%
  23. GPT-5.6 Luna78.6%
  24. GPT-5.3-Codex78.5%
  25. GPT-5.478.4%
  26. Claude Sonnet 577.3%
  27. Step 5 Preview76.4%
  28. Qwen3.8 27B76.3%
  29. Claude Opus 4.675.4%
  30. Claude Opus 4.574%
  31. Gemma 4 31B73.4%
  32. Claude Sonnet 4.673.3%
  33. MiMo-V2.6-Flash73.1%
  34. Claude Sonnet 4.568.7%
  35. Mistral Medium 3.564.9%
  36. Llama 4 Maverick62.1%
  37. Claude Haiku 4.558.6%
  38. Llama 4 Scout52.9%
  39. Claude Fable 5.186.3%Moonshot AI's run
  40. GLM-5.3-Flash86%Vals.ai's run, MMMU-Pro

The other models in the grid have no result on MMMU-Pro yet.

FactualityAA-Omniscience Accuracy

  1. Claude Fable 5.168.4%
  2. Claude Opus 5.565.5%
  3. Claude Fable 565.4%
  4. GPT-6.1 Sol61.8%
  5. GPT-6 Astra61.6%
  6. Claude Opus 560.9%
  7. Gemini 3.1 Pro Preview54.9%
  8. GPT-6 Sol54.5%
  9. Claude Sonnet 5.551.5%
  10. Gemini 3.8 Flash50.5%
  11. Claude Opus 4.748.9%
  12. Kimi K3.1 Pro48.9%
  13. Claude Opus 4.848.8%
  14. Gemini 4 Argon48.3%
  15. GPT-6.1 Terra47.6%
  16. Claude Opus 4.647%
  17. Claude Opus 4.546.6%
  18. DeepSeek V4 Pro45.2%
  19. MiniMax M3.1 Flash45.1%
  20. Grok 4.742.7%
  21. GPT-5.6 Terra42.3%
  22. Muse Spark Open42%
  23. Claude Sonnet 4.640.9%
  24. Claude Sonnet 540.1%
  25. GPT-6 Luna39.6%
  26. DeepSeek V4.1 Flash39.6%
  27. Muse Wonder38%
  28. Muse Spark 1.338%
  29. Step 5 Preview36.4%
  30. MiMo-V2.6-Pro34.8%
  31. Claude Haiku 5.534.7%
  32. Claude Sonnet 4.532.9%
  33. GLM-5.332.3%
  34. Qwen3.8 Max29.5%
  35. GLM-5.3-Flash28.2%
  36. MiMo-V2.6-Flash27.2%
  37. Ling 3.1 Flash26.5%
  38. Mistral Large 426%
  39. Mistral Medium 3.523%
  40. Claude Haiku 4.518%
  41. Qwen3.8 27B17.3%
  42. GPT-5.6 Sol69.7%Epoch AI's run, SimpleQA Verified
  43. Gemini 3.6 Flash66.2%Epoch AI's run, SimpleQA Verified
  44. GPT-5.563%Epoch AI's run, SimpleQA Verified
  45. Kimi K350.6%Epoch AI's run, SimpleQA Verified
  46. Grok 4.648.9%Epoch AI's run, SimpleQA Verified
  47. Grok 4.548.3%Epoch AI's run, SimpleQA Verified
  48. GPT-5.6 Luna41%Epoch AI's run, SimpleQA Verified
  49. Kimi K2.7 Code36.5%Epoch AI's run, SimpleQA Verified
  50. GLM-5.234.2%Epoch AI's run, SimpleQA Verified
  51. gpt-oss-120b16.8%OpenAI's own figure, SimpleQA
  52. Gemma 4 31B10.4%Epoch AI's run, SimpleQA Verified

The other models in the grid have no result on AA-Omniscience Accuracy yet.

Answers in fullSpeechMap

  1. Grok 4.593.1%
  2. Gemini 3.6 Flash87.2%
  3. Gemini 4 Argon87%
  4. Gemini 3.8 Flash86.1%
  5. Grok 4.683.6%
  6. Claude Opus 5.582.8%
  7. Gemma 4 31B82.3%
  8. Claude Sonnet 5.581.6%
  9. Claude Haiku 5.578.8%
  10. Claude Opus 573.7%
  11. Claude Fable 5.172.4%
  12. DeepSeek V4 Pro72%
  13. GLM-5.371.5%
  14. Mistral Medium 3.570.5%
  15. Claude Opus 4.770.2%
  16. Llama 4 Scout70.1%
  17. GPT-6.1 Sol69.5%
  18. GPT-6 Astra68.2%
  19. Claude Opus 4.867.4%
  20. MiMo-V2.6-Flash66.9%
  21. MiMo-V2.6-Pro66.5%
  22. Kimi K365.9%
  23. GLM-5.3-Flash65.4%
  24. Qwen3.8 Max65.3%
  25. Claude Fable 564.8%
  26. Grok 4.764.1%
  27. GPT-6 Sol64%
  28. GPT-6 Luna63.4%
  29. Claude Opus 4.659.9%
  30. Gemini 3.1 Pro Preview59.9%
  31. Step 5 Preview59.7%
  32. Llama 4 Maverick58.3%
  33. Claude Opus 4.557.5%
  34. Muse Wonder42.7%
  35. gpt-oss-120b36.3%
  36. Claude Sonnet 4.635.8%
  37. Claude Sonnet 4.531.4%
  38. Muse Spark 1.325.8%
  39. Claude Haiku 4.524.7%

The other models in the grid have no result on SpeechMap yet.

Instruction followingMultiChallenge

  1. GPT-6.1 Sol82%
  2. Gemini 4 Argon78.7%
  3. DeepSeek V4.1 Flash74.9%
  4. GPT-6.1 Terra74.2%
  5. Muse Spark Open74.2%
  6. Gemini 3.1 Pro Preview71.4%
  7. Claude Haiku 5.567.7%
  8. Claude Opus 4.559%
  9. Claude Sonnet 4.555.3%
  10. Claude Haiku 4.550.5%
  11. gpt-oss-120b45.3%
  12. Claude Opus 4.637.2%
  13. Qwen3.8 27B79.5%Alibaba's own figure, IFBench
  14. GPT-5.575.9%Artificial Analysis's run, IFBench
  15. Gemma 4 31B75.6%Artificial Analysis's run, IFBench
  16. GPT-5.3-Codex75.4%Artificial Analysis's run, IFBench
  17. GPT-5.473.9%Artificial Analysis's run, IFBench
  18. GLM-5.273.3%Artificial Analysis's run, IFBench
  19. GPT-5.6 Sol72.7%Artificial Analysis's run, IFBench
  20. GPT-5.6 Terra71.2%Artificial Analysis's run, IFBench
  21. Mistral Medium 3.568.8%Artificial Analysis's run, IFBench
  22. Claude Fable 563.5%Artificial Analysis's run, IFBench
  23. Kimi K2.7 Code63.1%Artificial Analysis's run, IFBench
  24. Claude Opus 4.862.2%Artificial Analysis's run, IFBench
  25. Claude Opus 4.758.6%Artificial Analysis's run, IFBench
  26. Claude Sonnet 4.656.6%Artificial Analysis's run, IFBench
  27. Llama 4 Maverick43%Artificial Analysis's run, IFBench
  28. Llama 4 Scout39.5%Artificial Analysis's run, IFBench

The other models in the grid have no result on MultiChallenge yet.

Every measure on record

Cost, speed, reliability, knowledge-work and domain results for GPT-6 Luna beyond the twelve chart axes, each with the run it comes from and its publisher. These stay separate measures; none is folded into the chart.

Every measure on record for GPT-6 Luna: the value, the run it comes from, the publisher and the day it was read
MeasureGPT-6 LunaRunSourceRead
Specs and access
Context windowThe most tokens one request can hold, as the maker states it. Size alone says nothing about how well the model uses a long input; the Long context axis measures that.1.05MOpenAIOct 28, 2026
Max outputThe most tokens the model writes in one response.128KOpenAIOct 28, 2026
ReadsThe kinds of input the model accepts.Text, ImagesArtificial AnalysisOct 27, 2026
LicenceThe terms the weights or the service are offered under.OpenAI Services AgreementOpenAINov 1, 2026
Open weightsWhether the maker publishes the weights for anyone to run.NoArtificial AnalysisOct 27, 2026
Routes offering itOf the 19 clouds, gateways and coding products GILD tracks, how many offer the release today, preview included.10 of 19GILD route matrixOct 28, 2026
Cost
Answer tokens per taskLower is better. Answer tokens per Intelligence Index task, reasoning excluded.11,122GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Cost per task, cache readsLower is better. The cache-read share of AA's cost per Intelligence Index task.$0.029GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Cost per task, cache writesLower is better. The cache-write share of AA's cost per Intelligence Index task.$0.012GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Cost per task, inputLower is better. The input-token share of AA's cost per Intelligence Index task.$0.043GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Cost per task, outputLower is better. The answer-token share of AA's cost per Intelligence Index task.$0.025GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Cost per task, reasoningLower is better. The reasoning-token share of AA's cost per Intelligence Index task.$0.019GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Cost per taskLower is better. What one Intelligence Index task cost AA at list price, input, cache, output and reasoning tokens together.$0.068GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Cost to run the indexLower is better. What the whole Intelligence Index run cost AA at list price. The runs cost from tens of dollars to about $13,000, so the axis is log from $10 to $100,000.$122.05GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Output tokens per taskLower is better. Tokens the model wrote per Intelligence Index task, reasoning included: how verbose it is.50,012GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Reasoning tokens per taskLower is better. Reasoning tokens per Intelligence Index task.38,890GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Speed
End-to-end time, 100K promptLower is better. Median seconds for a whole response with a 100,000-token prompt.190 sGPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
End-to-end response timeLower is better. Seconds AA measures for a whole response on its standard prompt.98 sGPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Time to first answer token, 100K promptLower is better. Median seconds to the first answer token with a 100,000-token prompt.185 sGPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Time to first answer tokenLower is better. Seconds until the first answer token, after any reasoning, on AA's API runs.94 sGPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Output speed, 100K promptMedian output tokens per second when the prompt is about 100,000 tokens long.116 tokens/sGPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Output speedMedian output tokens per second on AA's API runs, with the 5th and 95th percentile when AA prints them.127 tokens/sGPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Time per taskLower is better. Wall-clock seconds per Intelligence Index task. Runs take from about 15 s to about 33 min, so the axis is log from 1 s to 10,000 s.392 sGPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Time to first token, 100K promptLower is better. Median seconds to the first chunk when the prompt is about 100,000 tokens long: long-input latency, separate from window size.185 sGPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Time to first tokenLower is better. Median seconds to the first streamed chunk on AA's API runs, with the 5th and 95th percentile when AA prints them. Reasoning models spend this time thinking.94 sGPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Reliability
Hallucination rateLower is better. AA-Omniscience hallucination rate shows how often the model answers wrongly when it does not know and should decline.79.3%Max effortArtificial AnalysisOct 28, 2026
Omniscience accuracyShare of AA-Omniscience knowledge questions answered correctly.39.6%Max effortArtificial AnalysisOct 28, 2026
Omniscience indexAA-Omniscience index: correct answers minus wrong answers, declines neutral, -100 to 100.0.7GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
SimpleQA Verified (Epoch)Share of SimpleQA Verified factual questions answered correctly, best scorer, Epoch AI's run. A second factuality source beside AA-Omniscience.41.4%Max effortEpoch AISep 22, 2026
Knowledge work
AA-BriefcaseAA-Briefcase overall Elo for long business deliverables, with AA's 95% interval.1,336GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
AnalystAgent (AA run)AA's AnalystAgent score for analyst workflows.43.8%GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
APEX-Agents (maintainers)APEX-Agents pass@1 from the maintainers, as Epoch AI republishes it.44.3%Max effortMercor (via Epoch AI)Oct 26, 2026
GDP-PDF (AA run)Share of GDP-PDF document tasks where every check passes.22.8%GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
GDPval-AAGDPval-AA Elo: AA's run of economically valuable knowledge-work tasks, graded pairwise, with AA's interval.1,445GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
MLCR (AA run)AA's MLCR overall score for long, multi-document reading.26.1%GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Capability beyond the chart
AA-LCRAA long-context reasoning accuracy.83.3%GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
ALE-BenchALE-Bench performance rating on long optimization contests, as Epoch AI republishes it.1,577Extra-high effortSakana AI (via Epoch AI)Oct 26, 2026
ARC-AGI-2ARC-AGI-2 score from the ARC Prize maintainers, as Epoch AI republishes it.59.3%Max effortARC Prize Foundation (via Epoch AI)Oct 26, 2026
Chess puzzles (Epoch)Share of chess puzzles solved, Epoch AI's run.36%Max effortEpoch AIOct 13, 2026
CritPt (AA run)Share of CritPt research-level physics problems solved in AA's run.19.4%GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
DTBenchDTBench accuracy, as Epoch AI republishes it.90.1%Max effortRedwood Research (via Epoch AI)Oct 26, 2026
Epoch Capabilities IndexEpoch Capabilities Index: Epoch AI's composite across its benchmark hub, with its confidence interval.157GPT-6 LunaEpoch AIOct 26, 2026
FrontierCode (AA run)AA's FrontierCode score: hard, unsaturated coding tasks.41.9%GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
FrontierMath Tier 4 (Epoch)Share of FrontierMath Tier 4 research math problems solved, Epoch AI's run.56.1%Max effortEpoch AISep 22, 2026
FrontierMath Tiers 1 to 3 (Epoch)Share of FrontierMath Tiers 1 to 3 problems solved, Epoch AI's run.78.9%Max effortEpoch AISep 22, 2026
GPQA Diamond (Epoch)GPQA Diamond accuracy, best scorer, Epoch AI's run.90.5%Max effortEpoch AISep 22, 2026
Humanity's Last Exam (AA run)Share of Humanity's Last Exam questions answered correctly in AA's run.38.5%GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Intelligence IndexArtificial Analysis Intelligence Index: AA's composite of its own evaluation runs, 0 to 100 points.38.1GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
LMCALMCA score, 0 to 100, as Epoch AI republishes it. Its interval is printed only as a half-width, so it is not drawn.44.5Max effortRedwood Research (via Epoch AI)Oct 26, 2026
MMMU-Pro (AA run)Multimodal understanding accuracy on MMMU-Pro in AA's run.79.7%GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Mystery game puzzles (Epoch)Share of mystery game puzzles solved, Epoch AI's run.7%Max effortEpoch AISep 22, 2026
OTIS Mock AIME (Epoch)Share of OTIS Mock AIME 2024 to 2025 problems solved, Epoch AI's run.98.9%Max effortEpoch AISep 22, 2026
ProofBenchShare of ProofBench proofs graded correct, from Vals AI as Epoch AI republishes it.64%Vals AI (via Epoch AI)Oct 26, 2026
SciCode (AA run)SciCode subproblem accuracy in AA's run.54.6%GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Terminal-Bench 4.0 (AA run)Share of Terminal-Bench 4.0 tasks solved in AA's own harness.12.6%GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Terminal-Bench Science (AA run)Share of Terminal-Bench Science tasks solved in AA's harness.8.6%GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
WebDev ArenaWebDev Arena score from human pairwise votes on web builds, with its 95% interval, as Epoch AI republishes it.1,582Max effortLMArena (via Epoch AI)Oct 26, 2026
WeirdML v3, best runWeirdML v3 maximum performance across runs, as Epoch AI republishes it.12.0%Extra-high effortHåvard Tveit Ihle (via Epoch AI)Oct 26, 2026
Domains
EconomicsArtificial Analysis capability score for economics questions, 0 to 100 points.45.2GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
EngineeringArtificial Analysis capability score for engineering questions, 0 to 100 points.37.1GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Finance and accountingArtificial Analysis capability score for finance and accounting questions, 0 to 100 points.40.3GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Healthcare and medicalArtificial Analysis capability score for healthcare and medical questions, 0 to 100 points.38.9GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
LegalArtificial Analysis capability score for legal questions, 0 to 100 points.40.3GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Strategy and operationsArtificial Analysis capability score for strategy and operations questions, 0 to 100 points.45.7GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026
Harvey Legal Lab (AA run)AA's run of Harvey's legal task lab.3.3%GPT-6 Luna (Max)Artificial AnalysisOct 27, 2026

Routes, prices and uptime

Where GPT-6 Luna is offered, what each route charges, and how each endpoint is holding up.

Where it is offered

10 of 19 routes GILD tracks offer GPT-6 Luna today, preview included. Read Oct 28, 2026 from each route's own pages.

RouteStatusModel IDLimits and lifecycleSources
Amazon BedrockAvailableopenai.gpt-6-lunaus./global. profiles on bedrock-runtime; bedrock-mantle; EOL not sooner than Sept 22, 2027; tiers: Standard onlyAmazon Web Services, Models at a glanceAmazon Web Services, GPT-6 Luna
CodexAvailablegpt-6-lunacodex -m gpt-6-lunaOpenAI, Models
DatabricksAvailablesystem.ai.gpt-6-lunaDatabricks' supported-models page, read Oct 30, 2026, lists GPT-6 Luna as system.ai.gpt-6-luna, for use through the Responses API; it is not supported in AI Playground. The foundation-model overview page, read Oct 30, 2026, lists GPT-6 Astra and GPT-5.6 Sol, Terra and Luna among OpenAI models, and not GPT-6 Luna.Databricks, Databricks-hosted inferenceDatabricks, Detailed list of models supported by Databricks Foundation Model APIs
The maker's own APIAvailablegpt-6-luna1,050,000 context / 128,000 output; Fast 2x, Ultrafast 6x, Batch and Flex -50%, regional +10%, >272K input 2x input and 1.5x outputOpenAI, GPT-6 Luna ModelOpenAI, GPT-6.1 Sol Model
GitHub CopilotAvailablenot statedpicker label GPT-6 Lunaavailable (GA)GitHub
GitHub ModelsRetirednot applicableservice retiredservice retired July 30, 2026GitHub, GitHub Models
Microsoft FoundryAvailablegpt-6-lunalisted in GPT-6 seriesMicrosoft, Foundry Models sold by AzureMicrosoft, Region availability for Foundry Models sold by Azure
OpenCodeAvailablegpt-6-lunaOpenCode Zen, OpenAI Responses endpointAnomaly (OpenCode), ModelsOpenCode (Anomaly)
OpenRouterAvailableopenai/gpt-6-luna1,050,000 / 128,000; batch variant listedOpenRouter
Snowflake CortexPreviewopenai-gpt-6-lunaPrivate previewSnowflake
Windsurf / DevinAvailablegpt-6-luna-highgpt-6-luna-high-prioritygpt-6-luna-lowgpt-6-luna-low-prioritygpt-6-luna-maxgpt-6-luna-max-prioritygpt-6-luna-mediumgpt-6-luna-medium-prioritygpt-6-luna-nonegpt-6-luna-none-prioritygpt-6-luna-xhighgpt-6-luna-xhigh-priorityLow to Max thinking, plus Fast (priority) variantsCognition (Devin, formerly Windsurf), AI Models

Not offered on 3 routes: Antigravity, Cursor and Google Cloud Vertex / Agent Platform (Google managed).

5 routes do not say: Claude Code, Claude on Google Cloud (Anthropic managed), Claude Platform on AWS, Gemini CLI and Grok Build.

What each of these 8 routes' pages say, with sources
RouteStatusModel IDLimits and lifecycleSources
AntigravityNot offeredAntigravity lists GPT-OSS-120b only among OpenAI modelsGoogle
CursorNot offeredCursor's OpenAI rows stop at GPT-5.6 Sol, Terra, LunaAnysphere (Cursor)CursorX (@thegitai)
Google Cloud Vertex / Agent Platform (Google managed)Not offeredOpenAI section lists gpt-oss onlyGoogle Cloud, Anthropic's Claude on Google Cloud modelsGoogle Cloud, Gemini Enterprise Agent Platform partner models for MaaS
Claude CodeNot statedClaude Code's model configuration page, read Oct 28 and Oct 29, 2026, does not name this model. It takes a full model name on the Anthropic API, an inference profile ARN on Amazon Bedrock and a deployment name on Microsoft Foundry.Anthropic
Claude on Google Cloud (Anthropic managed)Not statedRegion, tier and limits not stated on the route's pages.
Claude Platform on AWSNot statedRegion, tier and limits not stated on the route's pages.
Gemini CLINot statedRegion, tier and limits not stated on the route's pages.
Grok BuildNot statedGrok Build pages name only grok-4.7xAI (SpaceXSI)

Prices by route

The lowest standard rate is OpenAI API, at $0.1 / $0.5 per million input and output tokens. US dollars per million tokens, as each route lists them, one row per route and rate plan, cheapest standard rate first after the maker's own; a blended rate states its mix. OpenRouter's endpoints follow under one heading, each with its monitor's uptime over 1 day and 30 minutes and the context and output it serves.

RouteStandard, in / outCache readOther ratesSource, or uptime (1 day / 30 min) and limits
OpenAI APIMakerLowest$0.1 / $0.5OpenAI, Oct 26, 2026
Artificial Analysis price record$0.1 / $0.5$0.01Blended $0.2, 3 input : 1 output, no cacheBlended $0.077, 7 cache-hit : 2 input : 1 outputCache write $0.13Artificial Analysis, Oct 27, 2026
OpenRouterprompts under 272K tokens$0.1 / $0.5$0.01Cache read $0.02, prompts of 272K tokens or moreCache write $0.25, 5-minute cache, prompts of 272K tokens or moreCache write $0.13, 5-minute cache, prompts under 272K tokensLong context $0.2 / $0.75, prompts of 272K tokens or moreOpenRouter, Oct 28, 2026
Through OpenRouter, 7 provider endpoints. OpenRouter, Oct 28, 2026
Azureprompts under 272K tokens$0.1 / $0.5$0.01Cache read $0.02, prompts of 272K tokens or moreCache write $0.25, 5-minute cache, prompts of 272K tokens or moreCache write $0.13, 5-minute cache, prompts under 272K tokensLong context $0.2 / $0.75, prompts of 272K tokens or moreUp 100% / 100%1.05M context, 128K output
OpenAIprompts under 272K tokens$0.1 / $0.5$0.01Cache read $0.02, prompts of 272K tokens or moreCache write $0.25, 5-minute cache, prompts of 272K tokens or moreCache write $0.13, 5-minute cache, prompts under 272K tokensLong context $0.2 / $0.75, prompts of 272K tokens or moreUp 100% / 100%1.05M context, 128K output
Amazon Bedrock (us-east-1)prompts under 272K tokens$0.11 / $0.55$0.011Cache read $0.022, prompts of 272K tokens or moreCache write $0.28, 5-minute cache, prompts of 272K tokens or moreCache write $0.14, 5-minute cache, prompts under 272K tokensLong context $0.22 / $0.82, prompts of 272K tokens or moreUp 100% / 100%1.05M context, 128K output
Azure (eu)prompts under 272K tokens$0.11 / $0.55$0.011Cache read $0.022, prompts of 272K tokens or moreCache write $0.28, 5-minute cache, prompts of 272K tokens or moreCache write $0.14, 5-minute cache, prompts under 272K tokensLong context $0.22 / $0.82, prompts of 272K tokens or moreUp 100% / 100%1.05M context, 128K output
Azure (us)prompts under 272K tokens$0.11 / $0.55$0.011Cache read $0.022, prompts of 272K tokens or moreCache write $0.28, 5-minute cache, prompts of 272K tokens or moreCache write $0.14, 5-minute cache, prompts under 272K tokensLong context $0.22 / $0.82, prompts of 272K tokens or moreUp 100% / 100%1.05M context, 128K output
OpenAI (fast, priority)Cache read $0.04, priority tier, prompts of 272K tokens or moreCache read $0.02, priority tier, prompts under 272K tokensCache write $0.5, priority tier, 5-minute cache, prompts of 272K tokens or moreCache write $0.25, priority tier, 5-minute cache, prompts under 272K tokensLong context $0.4 / $1.50, priority tier, prompts of 272K tokens or morePriority $0.2 / $1, priority tier, prompts under 272K tokensUp 100% / 100%1.05M context, 128K output
OpenAI (flex)Cache read $0.01, flex tier, prompts of 272K tokens or moreCache read $0.005, flex tier, prompts under 272K tokensCache write $0.13, flex tier, 5-minute cache, prompts of 272K tokens or moreCache write $0.063, flex tier, 5-minute cache, prompts under 272K tokensFlex $0.05 / $0.25, flex tier, prompts under 272K tokensLong context $0.1 / $0.38, flex tier, prompts of 272K tokens or moreUp 97.6% / 100%1.05M context, 128K output

Uptime and speed by endpoint

Each provider endpoint as its monitor reports it: uptime over the last day and the last 30 minutes, output speed and time to first token, and the limits it serves. A blank is a figure the monitor does not publish for that endpoint.

EndpointUptime, 1 dayUptime, 30 minOutput speedFirst tokenContext / max outputSource
Artificial Analysis: Microsoft Azure185 tokens/s70 sArtificial Analysis, Oct 28, 2026
Artificial Analysis: OpenAI (Flex)64 tokens/s166 sArtificial Analysis, Oct 28, 2026
Artificial Analysis: OpenAI124 tokens/s77 sArtificial Analysis, Oct 28, 2026
Status page: OpenAI API aggregate100%, Displayed window: Jul 30, 2026 to Oct 28, 2026; aggregate across tiers, models, and error types where the page states this limitation.OpenAI, Oct 28, 2026
Status page: OpenAI API aggregate100.0%, Displayed window: Jul 30, 2026 to Oct 28, 2026; aggregate across tiers, models, and error types where the page states this limitation.OpenAI, Oct 28, 2026
Status page: OpenAI API aggregate100%, Displayed window: Jul 30, 2026 to Oct 28, 2026; aggregate across tiers, models, and error types where the page states this limitation.OpenAI, Oct 28, 2026
Status page: OpenAI API aggregate100%, Displayed window: Jul 30, 2026 to Oct 28, 2026; aggregate across tiers, models, and error types where the page states this limitation.OpenAI, Oct 28, 2026
Status page: OpenAI API aggregate100%, Displayed window: Jul 30, 2026 to Oct 28, 2026; aggregate across tiers, models, and error types where the page states this limitation.OpenAI, Oct 28, 2026
Status page: OpenAI API aggregate100%, Displayed window: Jul 30, 2026 to Oct 28, 2026; aggregate across tiers, models, and error types where the page states this limitation.OpenAI, Oct 28, 2026
Status page: OpenAI API aggregate100%, Displayed window: Jul 30, 2026 to Oct 28, 2026; aggregate across tiers, models, and error types where the page states this limitation.OpenAI, Oct 28, 2026
Status page: OpenAI API aggregate100%, Displayed window: Jul 30, 2026 to Oct 28, 2026; aggregate across tiers, models, and error types where the page states this limitation.OpenAI, Oct 28, 2026
Status page: OpenAI API aggregate100%, Displayed window: Jul 30, 2026 to Oct 28, 2026; aggregate across tiers, models, and error types where the page states this limitation.OpenAI, Oct 28, 2026
Status page: OpenAI API aggregate100.0%, Displayed window: Jul 30, 2026 to Oct 28, 2026; aggregate across tiers, models, and error types where the page states this limitation.OpenAI, Oct 28, 2026
Status page: OpenAI API aggregate100%, Displayed window: Jul 30, 2026 to Oct 28, 2026; aggregate across tiers, models, and error types where the page states this limitation.OpenAI, Oct 28, 2026
Status page: OpenAI API aggregate100.0%, Displayed window: Jul 30, 2026 to Oct 28, 2026; aggregate across tiers, models, and error types where the page states this limitation.OpenAI, Oct 28, 2026
Status page: OpenAI API aggregate100%, Displayed window: Jul 30, 2026 to Oct 28, 2026; aggregate across tiers, models, and error types where the page states this limitation.OpenAI, Oct 28, 2026
Status page: OpenAI API aggregate100%, Displayed window: Jul 30, 2026 to Oct 28, 2026; aggregate across tiers, models, and error types where the page states this limitation.OpenAI, Oct 28, 2026
Status page: OpenAI API aggregate100%, Displayed window: Jul 30, 2026 to Oct 28, 2026; aggregate across tiers, models, and error types where the page states this limitation.OpenAI, Oct 28, 2026

Lineup

OpenAI's 12 releases in 7 families, oldest to newest along each tier, with list price and speed. GPT-6 Luna is lit.

CurrentLegacyThis model

Price is the list price per 1M tokens, input / output. Speed is median output tokens per second. Bars share one scale across the lineup. Read between Oct 26, 2026 and Nov 2, 2026.

  1. GPT Terra

    OpenAI's fast, efficient GPT tier for visual reasoning, computer use, and writing.

    2 releases

    1. 5.6Current. In 5 products we coverPrice$2 / $12Speed111.1 tok/s
    2. 6.1Current. In 4 products we coverPrice$1 / $5Speed97.2 tok/s
  2. GPT Sol

    OpenAI's GPT model tier for demanding everyday and agentic work.

    3 releases

    1. 5.6Current. In 5 products we coverPrice$4 / $20Speed101.9 tok/s
    2. 6Legacy. In 5 products we coverPrice$2 / $10Speed111.7 tok/s
    3. 6.1Current. In 6 products we coverPrice$2 / $10Speed81.1 tok/s
  3. GPT Luna

    OpenAI's most efficient GPT model tier for focused, high-volume tasks.

    2 releases

    1. 5.6Current. In 6 products we coverPrice$0.20 / $1.20Speed118.9 tok/s
    2. This page6Current. In 6 products we coverPrice$0.10 / $0.50Speed124.3 tok/s
  4. GPT Astra

    OpenAI's highest-capability GPT model tier.

    1 release

    1. 6Current. In 6 products we coverPrice$10 / $50Speed71 tok/s
  5. GPT-5

    OpenAI's GPT-5 frontier models, released before the Sol, Terra and Luna tiers.

    2 releases

    1. 5.4Current. In 2 products we coverPrice$2.50 / $15Speed96.7 tok/s
    2. 5.5Current. In 2 products we coverPrice$5 / $30Speed77.4 tok/s
  6. gpt-oss

    OpenAI's open-weight GPT models under the Apache 2.0 license.

    1 release

    1. 120bCurrent. In 1 product we coverPrice$0.09 / $0.36, on Google Cloud Vertex / Agent Platform (Google managed)Speed236.4 tok/s
  7. GPT Codex

    OpenAI's GPT models tuned for agentic coding in Codex.

    1 release

    1. 5.3Legacy. In 3 products we coverPrice$1.75 / $14Speed79.1 tok/s

Where it fits

The layers of Agentic Software Development that GPT-6 Luna can power. A product supplies the rest.

Product & Engineering, Software Development

Agentic Software Development

Primary role
Foundation Model / Reasoning Engine

GPT-6 Luna is positioned by its provider for focused, high-volume tasks. In an agentic software-development product it suits steps such as routing, classification, and extraction. The Model does not itself provide the surrounding interface, execution environment, or system of record.

  1. Work planning & task decomposition

    The Model can assist with work planning & task decomposition when a Product supplies the necessary context and tools.

    Supporting
  2. Codebase context & intelligence

    The Model can assist with codebase context & intelligence when a Product supplies the necessary context and tools.

    Supporting
  3. Coding & implementation

    The Model can assist with coding & implementation when a Product supplies the necessary context and tools.

    Supporting
  4. Debugging & investigation

    The Model can assist with debugging & investigation when a Product supplies the necessary context and tools.

    Supporting
  5. Testing & verification

    The Model can assist with testing & verification when a Product supplies the necessary context and tools.

    Supporting
  6. Code review & quality

    The Model can assist with code review & quality when a Product supplies the necessary context and tools.

    Supporting

Products

We cover 6 products that offer GPT-6 Luna today: 5 subscriptions and 1 API.

Through a subscription

  1. OpenCode+27 PositiveOpen-source, MIT-licensed coding agent that edits code and runs commands from a terminal UI, desktop app, web client, or editor extension.Go, Go PlusPlans that include it
  2. GitHub Copilot+15 MixedGitHub's AI coding agents, IDE assistance, and pull request review.Copilot Pro, Copilot Pro+, Copilot Max, Copilot Business, Copilot EnterprisePlans that include it
  3. ChatGPT+14 MixedOpenAI's general-purpose AI assistant for individuals and organizations.Free, Go, PlusPlans that include it
  4. Codex+55 Strong positiveOpenAI's coding agent for cloud, terminal, IDE, and app workflows.Free, Go, PlusPlans that include it
  5. Zed+25 PositiveNative code editor with its own agent, edit predictions, and room for external agents.Pro (14-day free trial)Plans that include it

Through an API

  1. OpenAI API+3 MixedDeveloper access to OpenAI models through the Responses API and SDKs.AI Model APISupported

Limits each vendor states

OpenCodeGo, Go Plus
Estimated requests per 5 hours: Go 4,230, Go Plus 16,920; monthly usage: Go $15, Go Plus $60
GitHub CopilotCopilot Pro, Copilot Pro+, Copilot Max, Copilot Business, Copilot Enterprise
Included on the Copilot plans listed. Copilot Free and Copilot Student get auto model selection only, so they cannot pick it.
ChatGPTFree, Go, Plus
Free and Go: GPT-6 Luna at Standard speed in the desktop app, subject to rollout; 350-3,000 local messages per five-hour period on Plus and Standard Business (estimate)
CodexFree, Go, Plus
Free and Go: GPT-6 Luna at Standard speed in the desktop app, subject to rollout; 350-3,000 local messages per five-hour period on Plus and Standard Business (estimate)
ZedPro (14-day free trial)
$5 of GPT-6 Luna usage and unlimited accepted edit predictions during the 14-day trial; the trial ends when the $5 balance is used or 14 days pass; GPT-6 Luna is the only hosted model available during the free trial

Plan access as each vendor's page states it: Anomaly (Oct 28, 2026), GitHub (Oct 31, 2026), OpenAI (Oct 28, 2026), Zed (Oct 28, 2026).

Comparisons

GILD comparisons that name GPT-6 Luna, then those of the clouds and APIs that serve it.

What practitioners report

Strongest on Cost, weakest on Long context.

Each figure is the share of accounts naming GPT-6 Luna that speak well of it on that axis. An axis is scored once praise and concerns are both on record from at least five accounts by three authors. An account from the maker, a company that sells or serves the model, or the maker's expert program is listed and counts toward no figure.

Share of practitioner accounts favorable to GPT-6 Luna on each of seven axes, with the accounts behind each figure
AxisFavorableAccounts
Quality and reasoningWhether its answers and code are right on the author's own task: reasoning, accuracy, instruction following, and consistency.55%16 favorable, 13 not, 29 authors
Tool use and structured outputWhether it calls tools correctly, returns valid structured output, and keeps agent loops on track.33%3 favorable, 6 not, 9 authors
Long contextHow it holds up over long documents, large codebases, long sessions, and many images or PDFs.20%1 favorable, 4 not, 5 authors
Developer experienceHow it is to build with: prompting, steering, effort settings, and support across SDKs and providers.25%2 favorable, 6 not, 8 authors
CostWhat the work costs: price per task, token use, and what caching and batch save.79%22 favorable, 6 not, 26 authors
SpeedResponse time, time to first token, and throughput.45%5 favorable, 6 not, 11 authors
ReliabilityWhether requests keep succeeding: overloaded errors, outages, rate limits, and changes that broke what worked.Only concerns on record0 favorable, 5 not, 5 authors
Every model on these seven axes
Share of accounts favorable on each axis for GPT-6 Luna and every other model GILD has accounts for
AxisGPT-6 LunaGPT-6.1 TerraGPT-6.1 SolGPT-6 AstraGPT-5.6 SolGPT-5.6 TerraGPT-5.6 LunaGPT-5.5GPT-5.4gpt-oss-120bGPT-6 SolGPT-5.3-CodexClaude Haiku 5.5Claude Sonnet 5.5Claude Opus 5.5Claude Fable 5.1Claude Opus 5Claude Sonnet 5Claude Fable 5Claude Opus 4.8Claude Opus 4.7Claude Sonnet 4.6Claude Opus 4.6Claude Opus 4.5Claude Haiku 4.5Claude Sonnet 4.5Gemini 4 ArgonGemini 3.8 FlashGemma 4 31BGemini 3.1 Pro PreviewGemini 3.6 FlashDeepSeek V4.1 FlashDeepSeek V4 ProKimi K3.1 ProKimi K3Kimi K2.7 CodeMistral Large 4Mistral Medium 3.5Grok 4.7Grok 4.6Grok 4.5MiniMax M3.1 FlashMercury 3GLM-5.3-FlashGLM-5.3GLM-5.2Muse Spark OpenMuse WonderMuse Spark 1.3Llama 4 ScoutLlama 4 MaverickQwen3.8 27BQwen3.8 MaxMiMo-V2.6-ProMiMo-V2.6-FlashLing 3.1 FlashStep 5 Preview
Quality and reasoning55%16 favorable, 13 not, 29 authors33%3 favorable, 6 not, 8 authors55%12 favorable, 10 not, 22 authors44%12 favorable, 15 not, 26 authors33%3 favorable, 6 not, 9 authors38%3 favorable, 5 not, 8 authorsNeeds 5 accounts from 3 authors3 favorable, 1 not, 4 authors33%4 favorable, 8 not, 12 authors33%2 favorable, 4 not, 6 authors58%22 favorable, 16 not, 38 authors31%10 favorable, 22 not, 32 authorsNeeds 5 accounts from 3 authors1 favorable, 3 not, 4 authors73%19 favorable, 7 not, 26 authors64%14 favorable, 8 not, 22 authors68%17 favorable, 8 not, 25 authors54%15 favorable, 13 not, 28 authors50%6 favorable, 6 not, 12 authors56%9 favorable, 7 not, 16 authors68%13 favorable, 6 not, 18 authors68%17 favorable, 8 not, 25 authors57%12 favorable, 9 not, 21 authors67%12 favorable, 6 not, 18 authors70%19 favorable, 8 not, 27 authors62%13 favorable, 8 not, 20 authors58%14 favorable, 10 not, 24 authors69%11 favorable, 5 not, 16 authors63%22 favorable, 13 not, 35 authors56%27 favorable, 21 not, 45 authors80%24 favorable, 6 not, 28 authors56%20 favorable, 16 not, 36 authorsNeeds 5 accounts from 3 authors1 favorable, 3 not, 4 authors61%25 favorable, 16 not, 40 authorsOnly concerns on record0 favorable, 4 not, 4 authors59%20 favorable, 14 not, 32 authorsOnly praise on record3 favorable, 0 not, 3 authors50%3 favorable, 3 not, 6 authors58%11 favorable, 8 not, 18 authors36%5 favorable, 9 not, 14 authors43%16 favorable, 21 not, 36 authors86%6 favorable, 1 not, 7 authors60%3 favorable, 2 not, 5 authors62%13 favorable, 8 not, 21 authors86%18 favorable, 3 not, 21 authors67%14 favorable, 7 not, 21 authors76%47 favorable, 15 not, 61 authors71%5 favorable, 2 not, 7 authorsNeeds 5 accounts from 3 authors2 favorable, 1 not, 3 authors20%1 favorable, 4 not, 5 authorsOnly praise on record2 favorable, 0 not, 2 authors53%8 favorable, 7 not, 15 authors44%8 favorable, 10 not, 17 authors71%24 favorable, 10 not, 34 authors57%4 favorable, 3 not, 7 authors22%2 favorable, 7 not, 9 authors40%4 favorable, 6 not, 10 authorsOnly concerns on record0 favorable, 1 not, 1 authorNeeds 5 accounts from 3 authors2 favorable, 1 not, 3 authors
Tool use and structured output33%3 favorable, 6 not, 9 authors40%2 favorable, 3 not, 5 authors40%4 favorable, 6 not, 10 authors62%8 favorable, 5 not, 13 authorsNo accounts yetOnly concerns on record0 favorable, 2 not, 2 authorsOnly praise on record1 favorable, 0 not, 1 authorOnly praise on record1 favorable, 0 not, 1 authorNo accounts yet27%4 favorable, 11 not, 15 authors56%5 favorable, 4 not, 9 authorsNo accounts yet67%6 favorable, 3 not, 9 authors40%4 favorable, 6 not, 10 authors46%6 favorable, 7 not, 13 authors30%3 favorable, 7 not, 10 authorsNeeds 5 accounts from 3 authors3 favorable, 1 not, 4 authors70%7 favorable, 3 not, 10 authors57%4 favorable, 3 not, 7 authors50%4 favorable, 4 not, 8 authors50%4 favorable, 4 not, 8 authors29%2 favorable, 5 not, 7 authors33%4 favorable, 8 not, 12 authors70%7 favorable, 3 not, 10 authors43%3 favorable, 4 not, 6 authors50%3 favorable, 3 not, 6 authors25%2 favorable, 6 not, 8 authors47%7 favorable, 8 not, 15 authors67%4 favorable, 2 not, 6 authors54%7 favorable, 6 not, 12 authorsOnly concerns on record0 favorable, 1 not, 1 author59%10 favorable, 7 not, 17 authorsOnly concerns on record0 favorable, 1 not, 1 authorNeeds 5 accounts from 3 authors3 favorable, 1 not, 4 authorsOnly concerns on record0 favorable, 1 not, 1 authorNo accounts yet38%5 favorable, 8 not, 13 authorsOnly concerns on record0 favorable, 5 not, 5 authors38%6 favorable, 10 not, 16 authorsOnly praise on record2 favorable, 0 not, 2 authorsOnly concerns on record0 favorable, 1 not, 1 author67%4 favorable, 2 not, 6 authors80%8 favorable, 2 not, 10 authors33%2 favorable, 4 not, 6 authors57%4 favorable, 3 not, 7 authorsNo accounts yetNo accounts yetOnly concerns on record0 favorable, 1 not, 1 authorNeeds 5 accounts from 3 authors1 favorable, 1 not, 2 authorsNeeds 5 accounts from 3 authors1 favorable, 2 not, 3 authorsOnly concerns on record0 favorable, 4 not, 4 authors46%6 favorable, 7 not, 13 authorsOnly praise on record1 favorable, 0 not, 1 authorOnly concerns on record0 favorable, 5 not, 5 authorsOnly concerns on record0 favorable, 1 not, 1 authorOnly concerns on record0 favorable, 1 not, 1 authorOnly concerns on record0 favorable, 1 not, 1 author
Long context20%1 favorable, 4 not, 5 authorsOnly concerns on record0 favorable, 1 not, 1 author38%3 favorable, 5 not, 8 authors27%3 favorable, 8 not, 11 authorsNo accounts yetNo accounts yetOnly concerns on record0 favorable, 1 not, 1 authorOnly concerns on record0 favorable, 1 not, 1 authorNeeds 5 accounts from 3 authors2 favorable, 1 not, 3 authors25%2 favorable, 6 not, 8 authorsOnly concerns on record0 favorable, 3 not, 3 authorsNo accounts yet29%2 favorable, 5 not, 7 authors60%3 favorable, 2 not, 5 authors80%8 favorable, 2 not, 10 authors63%5 favorable, 3 not, 8 authors67%4 favorable, 2 not, 6 authors50%3 favorable, 3 not, 6 authors33%2 favorable, 4 not, 6 authors60%6 favorable, 4 not, 10 authors50%4 favorable, 4 not, 7 authors71%5 favorable, 2 not, 7 authors64%7 favorable, 4 not, 11 authors40%4 favorable, 6 not, 10 authors40%2 favorable, 3 not, 5 authors50%4 favorable, 4 not, 8 authors25%2 favorable, 6 not, 8 authors38%5 favorable, 8 not, 13 authors20%1 favorable, 4 not, 5 authors44%7 favorable, 9 not, 16 authorsOnly praise on record1 favorable, 0 not, 1 author58%7 favorable, 5 not, 12 authorsNo accounts yetNeeds 5 accounts from 3 authors3 favorable, 1 not, 4 authorsOnly praise on record1 favorable, 0 not, 1 authorOnly concerns on record0 favorable, 1 not, 1 authorNeeds 5 accounts from 3 authors1 favorable, 3 not, 4 authorsNo accounts yet42%5 favorable, 7 not, 12 authorsNo accounts yetNo accounts yet40%2 favorable, 3 not, 5 authors60%3 favorable, 2 not, 5 authorsNo accounts yet40%2 favorable, 3 not, 5 authorsNo accounts yetNo accounts yetOnly concerns on record0 favorable, 1 not, 1 authorOnly concerns on record0 favorable, 1 not, 1 authorOnly concerns on record0 favorable, 3 not, 3 authorsNeeds 5 accounts from 3 authors2 favorable, 1 not, 3 authors75%6 favorable, 2 not, 8 authorsOnly praise on record1 favorable, 0 not, 1 authorNeeds 5 accounts from 3 authors1 favorable, 1 not, 2 authorsNeeds 5 accounts from 3 authors1 favorable, 1 not, 2 authorsNo accounts yetNo accounts yet
Developer experience25%2 favorable, 6 not, 8 authorsOnly concerns on record0 favorable, 2 not, 2 authors27%3 favorable, 8 not, 11 authors41%7 favorable, 10 not, 17 authorsNo accounts yetOnly concerns on record0 favorable, 1 not, 1 authorNo accounts yetNo accounts yetNo accounts yet14%1 favorable, 6 not, 7 authors25%3 favorable, 9 not, 12 authorsNo accounts yet25%2 favorable, 6 not, 8 authors38%5 favorable, 8 not, 13 authors38%6 favorable, 10 not, 16 authors50%7 favorable, 7 not, 14 authors25%3 favorable, 9 not, 12 authors29%2 favorable, 5 not, 7 authors25%3 favorable, 9 not, 12 authors53%10 favorable, 9 not, 19 authors29%4 favorable, 10 not, 14 authors57%4 favorable, 3 not, 7 authors45%5 favorable, 6 not, 11 authors67%8 favorable, 4 not, 12 authorsNeeds 5 accounts from 3 authors2 favorable, 2 not, 4 authors50%3 favorable, 3 not, 6 authors33%3 favorable, 6 not, 9 authors39%7 favorable, 11 not, 17 authorsOnly concerns on record0 favorable, 7 not, 7 authors40%8 favorable, 12 not, 20 authorsNo accounts yet35%8 favorable, 15 not, 23 authorsNo accounts yet9%1 favorable, 10 not, 11 authorsNo accounts yetOnly concerns on record0 favorable, 1 not, 1 author13%2 favorable, 14 not, 16 authorsOnly concerns on record0 favorable, 9 not, 9 authors25%5 favorable, 15 not, 20 authorsNo accounts yetNo accounts yetOnly concerns on record0 favorable, 7 not, 7 authors11%1 favorable, 8 not, 9 authorsOnly concerns on record0 favorable, 3 not, 3 authors33%5 favorable, 10 not, 15 authorsNo accounts yetOnly concerns on record0 favorable, 1 not, 1 authorOnly concerns on record0 favorable, 1 not, 1 authorNo accounts yetOnly concerns on record0 favorable, 6 not, 6 authorsOnly concerns on record0 favorable, 1 not, 1 author17%1 favorable, 5 not, 6 authorsOnly concerns on record0 favorable, 1 not, 1 authorOnly concerns on record0 favorable, 1 not, 1 authorOnly concerns on record0 favorable, 1 not, 1 authorNo accounts yetNo accounts yet
Cost79%22 favorable, 6 not, 26 authors80%8 favorable, 2 not, 9 authors74%14 favorable, 5 not, 19 authors29%7 favorable, 17 not, 23 authors57%4 favorable, 3 not, 7 authorsOnly concerns on record0 favorable, 1 not, 1 author50%3 favorable, 3 not, 6 authorsNeeds 5 accounts from 3 authors1 favorable, 3 not, 4 authors63%5 favorable, 3 not, 8 authors60%3 favorable, 2 not, 5 authors55%12 favorable, 10 not, 21 authorsNeeds 5 accounts from 3 authors2 favorable, 1 not, 3 authors69%20 favorable, 9 not, 29 authors45%10 favorable, 12 not, 22 authors56%15 favorable, 12 not, 27 authors20%4 favorable, 16 not, 20 authors43%3 favorable, 4 not, 7 authors39%7 favorable, 11 not, 17 authors8%1 favorable, 11 not, 12 authors40%6 favorable, 9 not, 14 authors50%7 favorable, 7 not, 13 authors50%6 favorable, 6 not, 12 authors33%7 favorable, 14 not, 20 authors53%8 favorable, 7 not, 15 authors29%4 favorable, 10 not, 12 authors38%3 favorable, 5 not, 8 authors35%7 favorable, 13 not, 20 authors58%14 favorable, 10 not, 23 authorsOnly praise on record7 favorable, 0 not, 7 authors50%8 favorable, 8 not, 16 authorsOnly concerns on record0 favorable, 1 not, 1 author66%25 favorable, 13 not, 37 authorsOnly praise on record2 favorable, 0 not, 2 authors40%10 favorable, 15 not, 25 authors71%5 favorable, 2 not, 7 authorsNeeds 5 accounts from 3 authors1 favorable, 3 not, 4 authors27%3 favorable, 8 not, 11 authorsOnly concerns on record0 favorable, 8 not, 8 authors19%5 favorable, 21 not, 26 authors20%1 favorable, 4 not, 5 authorsOnly praise on record4 favorable, 0 not, 4 authors80%12 favorable, 3 not, 15 authors50%6 favorable, 6 not, 12 authors76%16 favorable, 5 not, 21 authors35%8 favorable, 15 not, 23 authors71%5 favorable, 2 not, 7 authorsOnly concerns on record0 favorable, 1 not, 1 authorOnly concerns on record0 favorable, 9 not, 9 authorsNeeds 5 accounts from 3 authors2 favorable, 1 not, 3 authorsOnly praise on record1 favorable, 0 not, 1 authorOnly praise on record1 favorable, 0 not, 1 authorNeeds 5 accounts from 3 authors2 favorable, 2 not, 4 authorsOnly concerns on record0 favorable, 2 not, 2 authorsNeeds 5 accounts from 3 authors1 favorable, 1 not, 2 authorsOnly praise on record3 favorable, 0 not, 3 authorsOnly praise on record1 favorable, 0 not, 1 authorOnly praise on record1 favorable, 0 not, 1 author
Speed45%5 favorable, 6 not, 11 authors83%5 favorable, 1 not, 5 authors37%7 favorable, 12 not, 19 authors41%7 favorable, 10 not, 17 authorsOnly praise on record1 favorable, 0 not, 1 authorNeeds 5 accounts from 3 authors1 favorable, 1 not, 2 authors80%4 favorable, 1 not, 5 authorsNeeds 5 accounts from 3 authors1 favorable, 1 not, 2 authorsNo accounts yet85%23 favorable, 4 not, 27 authors57%4 favorable, 3 not, 7 authorsOnly praise on record1 favorable, 0 not, 1 author74%14 favorable, 5 not, 19 authors88%14 favorable, 2 not, 16 authors46%6 favorable, 7 not, 13 authors44%4 favorable, 5 not, 9 authors60%3 favorable, 2 not, 5 authors44%4 favorable, 5 not, 9 authors57%4 favorable, 3 not, 7 authors31%4 favorable, 9 not, 13 authors63%5 favorable, 3 not, 8 authors17%1 favorable, 5 not, 6 authors36%4 favorable, 7 not, 11 authors73%8 favorable, 3 not, 11 authors78%7 favorable, 2 not, 9 authors75%6 favorable, 2 not, 8 authors45%5 favorable, 6 not, 11 authors61%19 favorable, 12 not, 31 authors53%10 favorable, 9 not, 17 authors35%6 favorable, 11 not, 16 authorsNeeds 5 accounts from 3 authors2 favorable, 1 not, 3 authors68%21 favorable, 10 not, 30 authorsOnly concerns on record0 favorable, 1 not, 1 author21%4 favorable, 15 not, 19 authorsOnly concerns on record0 favorable, 2 not, 2 authorsNo accounts yet21%3 favorable, 11 not, 14 authorsOnly concerns on record0 favorable, 2 not, 2 authors29%5 favorable, 12 not, 17 authorsNeeds 5 accounts from 3 authors1 favorable, 2 not, 3 authorsOnly praise on record2 favorable, 0 not, 2 authors44%4 favorable, 5 not, 9 authors65%13 favorable, 7 not, 20 authors33%3 favorable, 6 not, 9 authors20%3 favorable, 12 not, 15 authorsNeeds 5 accounts from 3 authors1 favorable, 1 not, 2 authorsOnly concerns on record0 favorable, 1 not, 1 authorOnly concerns on record0 favorable, 1 not, 1 authorNeeds 5 accounts from 3 authors1 favorable, 1 not, 2 authorsNeeds 5 accounts from 3 authors3 favorable, 1 not, 4 authorsNo accounts yet33%7 favorable, 14 not, 21 authorsNeeds 5 accounts from 3 authors1 favorable, 3 not, 4 authorsOnly concerns on record0 favorable, 4 not, 4 authorsOnly concerns on record0 favorable, 1 not, 1 authorOnly concerns on record0 favorable, 2 not, 2 authorsOnly concerns on record0 favorable, 1 not, 1 author
ReliabilityOnly concerns on record0 favorable, 5 not, 5 authorsOnly concerns on record0 favorable, 1 not, 1 author13%1 favorable, 7 not, 8 authors14%2 favorable, 12 not, 14 authorsOnly concerns on record0 favorable, 4 not, 4 authorsOnly concerns on record0 favorable, 1 not, 1 authorNo accounts yetOnly concerns on record0 favorable, 2 not, 2 authorsOnly concerns on record0 favorable, 4 not, 4 authorsOnly concerns on record0 favorable, 4 not, 4 authors17%1 favorable, 5 not, 6 authorsOnly concerns on record0 favorable, 3 not, 3 authors20%1 favorable, 4 not, 5 authors18%2 favorable, 9 not, 11 authors13%1 favorable, 7 not, 8 authors9%1 favorable, 10 not, 11 authors13%1 favorable, 7 not, 8 authors63%5 favorable, 3 not, 7 authors22%2 favorable, 7 not, 9 authors17%2 favorable, 10 not, 12 authors18%2 favorable, 9 not, 11 authors17%1 favorable, 5 not, 6 authors20%3 favorable, 12 not, 15 authors38%6 favorable, 10 not, 16 authors29%2 favorable, 5 not, 7 authors40%4 favorable, 6 not, 10 authors5%1 favorable, 18 not, 19 authors15%3 favorable, 17 not, 20 authorsOnly concerns on record0 favorable, 5 not, 5 authors14%3 favorable, 19 not, 22 authorsOnly concerns on record0 favorable, 1 not, 1 author42%5 favorable, 7 not, 12 authorsNeeds 5 accounts from 3 authors1 favorable, 1 not, 2 authors8%1 favorable, 12 not, 13 authorsOnly concerns on record0 favorable, 1 not, 1 authorNeeds 5 accounts from 3 authors1 favorable, 1 not, 2 authors38%3 favorable, 5 not, 8 authorsOnly concerns on record0 favorable, 4 not, 4 authors22%2 favorable, 7 not, 9 authorsOnly concerns on record0 favorable, 1 not, 1 authorNo accounts yet60%3 favorable, 2 not, 5 authors33%2 favorable, 4 not, 5 authorsOnly concerns on record0 favorable, 7 not, 7 authorsOnly concerns on record0 favorable, 4 not, 4 authorsOnly concerns on record0 favorable, 1 not, 1 authorNo accounts yetOnly concerns on record0 favorable, 2 not, 2 authorsOnly concerns on record0 favorable, 1 not, 1 authorNeeds 5 accounts from 3 authors1 favorable, 3 not, 4 authorsOnly concerns on record0 favorable, 1 not, 1 authorOnly concerns on record0 favorable, 9 not, 9 authorsOnly concerns on record0 favorable, 1 not, 1 authorOnly concerns on record0 favorable, 2 not, 2 authorsNo accounts yetNo accounts yetOnly concerns on record0 favorable, 1 not, 1 author
The 71 accounts behind GPT-6 Luna's figures

GILD searched Hacker News, GitHub, Reddit, X, Artificial Analysis and the web for accounts that name GPT-6 Luna.

Quality and reasoning 55%

  • Favorable
    competent at both SQL queries and building HTML and JavaScript for Datasette Apps

    Claude Opus 5.5, GPT-6 Sol, GPT-6 Luna, and a new price war. Simon Willison, independent developer and Datasette creator (stated on his weblog), self-described, Sep 22, 2026. GPT-6 Luna running the Datasette Agent at agent.datasette.io.

  • Favorable
    GPT-6 Luna: Shockingly capable

    X post by @alighodsi. Ali Ghodsi, CEO and co-founder of Databricks, as listed on the Databricks Data + AI Summit Tuesday Keynote session page (read Oct 26, 2026) (role source), Sep 28, 2026. GPT-6 Luna in Databricks' internal model test across 2,400 engineers. A partner account: the author's company sells or serves this model, so it counts toward no figure.

  • Favorable
    GPT-6 Luna is surprisingly capable given how cheap it is

    X post by @pwendell. Patrick Wendell, co-founder and VP of engineering at Databricks, as listed on the Databricks Data + AI Summit Tuesday Keynote session page (read Oct 26, 2026) (role source), Sep 28, 2026. GPT-6 Luna in Databricks' online workload analysis of 2,400 engineers plus offline evals, routed through Unity Gateway. A partner account: the author's company sells or serves this model, so it counts toward no figure.

  • Favorable
    it eventually does get shit done

    X post by @kunchenguid. kunchenguid (Kun Chen), builder of the firstmate agent tool (stated in X bio and post), self-described, Sep 23, 2026. GPT-6 Luna at high reasoning as the firstmate agent.

  • Unfavorable
    Do not trust GPT-6 Luna AT ALL. Low, Med, High all fail

    X post by @leeloumt. leeloumt (Liam Debono), builds Project Memory and OperAI (stated in X bio), self-described, Oct 22, 2026. GPT-6 Luna at Low, Med, High, xHigh and Max against GPT-6.1 Sol at Low on his memory project.

  • Favorable
    GPT-6 Luna Decisions: 79.0% → 95.2%

    X post by @SaadMRP. SaadMRP (Pial), MSCS student at UIUC working on SREGym (stated in X bio), self-described, Oct 21, 2026. GPT-6 Luna through the Decisions API on 21 fault-diagnosis tasks.

  • Favorable
    gpt 6 Luna is a super smart model

    X post by @ZackKorman. Zack Korman, cofounder of Embroidery, building AI cybersecurity tools (stated in X bio), self-described, Oct 25, 2026. GPT-6 Luna.

  • Unfavorable
    Give it a task and it can spend a whole afternoon and still not get it right

    X post by @buildwithhassan. buildwithhassan (Hassan), software engineer who tests AI coding agents (stated in X bio), self-described, Oct 12, 2026. GPT-6 Luna as a coding agent and as a cheap helper inside Hermes, against GPT-6 Astra.

  • Favorable
    GPT-6 Luna did a bit better

    Hacker News comment by chriddyp. chriddyp, runs Plotly's DataAnalyticsBench (stated in comment), self-described, Oct 7, 2026. GPT-6 Luna on Plotly's DataAnalyticsBench.

  • Favorable
    In almost all cases, GPT-6 Luna (XHigh) have been enough

    Hacker News comment by Alifatisk. Alifatisk, Hacker News commenter (no role stated), self-described, Sep 29, 2026. GPT-6 Luna at XHigh in Codex.

  • Unfavorable
    GPT-6 Luna lost $60k on average

    Hacker News comment by zodwick. zodwick, author of Cafe Bench built at Dot (stated in comment), self-described, Sep 23, 2026. GPT-6 Luna on Cafe Bench, Dot's world-simulation eval.

  • Unfavorable
    It also caught 32 of the 40 unanswerable questions vs Jev's 38

    Hacker News comment by Bocajmai. Bocajmai, Hacker News commenter (no role stated), self-described, Oct 13, 2026. GPT-6 Luna ranking pages for a live phone agent, against Jev.

  • Favorable
    Even cheap models like GPT 6 Luna do decent job in programming these days

    Hacker News comment by rwyinuse. rwyinuse, Hacker News commenter (no role stated), self-described, Oct 12, 2026. GPT-6 Luna for programming at their company.

  • Unfavorable
    Luna misses the obvious (and more importantly, the clearly explained) consistently

    Hacker News comment by pessimizer. pessimizer, Hacker News commenter (no role stated), self-described, Oct 8, 2026. GPT-6 Luna reviewing abstract game rules.

  • Unfavorable
    Haiku 5.5 is noticeably smarter than GPT-6 Luna

    Hacker News comment by dannyw. dannyw, Hacker News commenter (no role stated), self-described, Oct 7, 2026. GPT-6 Luna against Claude Haiku 5.5.

  • Favorable
    I have been pleasantly surprised with the writing quality of GPT 6 Luna

    Hacker News comment by treetalker. treetalker, Hacker News commenter (no role stated), self-described, Oct 3, 2026. GPT-6 Luna for summarizing, rephrasing and drafting.

  • Unfavorable
    Luna without reasoning turned on might as well be a model from early 2025

    Hacker News comment by bob1029. bob1029, Hacker News commenter (no role stated), self-described, Oct 2, 2026. GPT-6 Luna with reasoning_effort none through the Decisions API.

  • Favorable
    with no tradeoff in accuracy

    Hacker News comment by CharlieDigital. CharlieDigital, Hacker News commenter (no role stated), self-described, Sep 29, 2026. GPT-6 Luna in batch mode, 20 records per prompt, against Jev.

  • Unfavorable
    I've had bad experiences with gpt 6 luna

    Hacker News comment by r_lee. r_lee, Hacker News commenter (no role stated), self-described, Sep 26, 2026. GPT-6 Luna against GPT-5.6 Luna on React work.

  • Favorable
    which does a tremendous job of Haskell

    Hacker News comment by tome. tome, Hacker News commenter (no role stated), self-described, Sep 26, 2026. GPT-6 Luna at xhigh on a Plus subscription, Haskell work.

  • Favorable
    Today I worked two hours with GPT 6 Luna, have been very productive tackling some hard stuff

    Hacker News comment by epolanski. epolanski, Hacker News commenter (no role stated), self-described, Sep 23, 2026. GPT-6 Luna on the 20 euro GPT plan.

  • Unfavorable
    the results were 30/36 for gpt 6 luna, and 33/36 for gpt 5.6 luna

    Hacker News comment by pjankiewicz. pjankiewicz, Hacker News commenter (no role stated), self-described, Sep 23, 2026. GPT-6 Luna on 36 agent-and-tool benchmark scenarios, against GPT-5.6 Luna.

  • Favorable
    GPT-6 Luna is smarter than 5.6 Terra

    Hacker News comment by XCSme. XCSme, runs the aibenchy comparison site (stated in comment), self-described, Sep 23, 2026. GPT-6 Luna against GPT-5.6 Terra on aibenchy.

  • Unfavorable
    6-luna is no improvement over 5.6, merely a price cut

    Hacker News comment by user43928. user43928, Hacker News commenter (no role stated), self-described, Sep 22, 2026. GPT-6 Luna against GPT-5.6 Luna.

  • Favorable
    offers similar accuracy compared to gpt-4.1-mini fine tuned for my specific task

    Hacker News comment by buckwheatmilk. buckwheatmilk, Hacker News commenter (no role stated), self-described, Sep 23, 2026. GPT-6 Luna replacing a fine-tuned GPT-4.1-mini for structured outputs.

  • Unfavorable
    In plan mode, this produces a plan with a lot of holes

    Auto model selection mode tends to always choose GPT 6 Luna. cyonix, GitHub issue author (no role stated), self-described, Oct 1, 2026. GPT-6 Luna chosen by auto model selection in plan mode.

  • Favorable
    GPT-6 Luna scored 23-27/30 on the same lecture

    Decide the default model: Gemini 3.8 Flash vs GPT-6 Luna. stegra05, GitHub issue author (no role stated), self-described, Oct 21, 2026. GPT-6 Luna generating slide decks from a 72-slide lecture in blind-reviewed rounds.

  • Unfavorable
    a re-prompt/restart overstatement and unlabeled gap citations failed the factual gate

    GPT 6 Luna High: corrected held-out storyline trial after #232. noelsaw1, GitHub issue author (no role stated), self-described, Sep 30, 2026. gpt-6-luna at high reasoning in Codex CLI narrating storyline cases.

  • Favorable
    Hand checks against the PDFs confirmed the fixes and the new rows checked

    Complete + re-verify the remaining 242 Sonnet-distilled paper pages with gpt-6-luna. alejandroll10, GitHub issue author (no role stated), self-described, Oct 4, 2026. gpt-6-luna completing and verifying research paper pages.

  • Favorable
    GPT-6 Luna passed every deterministic task, remained close to the raw quality leaders

    Model routing v2: pin GPT-6 Luna across the agent pipeline. huangyingting, GitHub issue author (no role stated), self-described, Sep 23, 2026. GPT-6 Luna (copilot) at high and xhigh effort across nine Copilot CLI agents.

  • Unfavorable
    and less keen to say none

    Our RAG kept retrieving the wrong page, so we tested letting Jev pick pages instead. jacobsayora, developer building an AI phone receptionist, self-described, Oct 13, 2026. GPT-6 Luna picking the answering page from a list, against Jev.

Tool use and structured output 33%

  • Unfavorable
    It leaks tool calls and markers in the output like crazy

    Hacker News comment by sunaookami. sunaookami, Hacker News commenter (no role stated), self-described, Sep 29, 2026. gpt-6-luna against gpt-5.6-terra.

  • Favorable
    I've been using GPT-6 Luna in some capacity for nearly all my agent workflows

    Hacker News comment by swalsh. swalsh, Hacker News commenter (no role stated), self-described, Oct 7, 2026. GPT-6 Luna in agent workflows.

  • Favorable
    I run some agents, mostly on Luna 6 right now. It's just tool use, web browsing, etc

    Hacker News comment by pkulak. pkulak, Hacker News commenter (no role stated), self-described, Oct 7, 2026. GPT-6 Luna (written as Luna 6) running tool-using agents.

  • Favorable
    perfectly capable of returning structured JSON

    Hacker News comment by waximabbax. waximabbax, Hacker News commenter (no role stated), self-described, Sep 26, 2026. GPT-6 Luna among cheap LLMs, against Jev.

  • Unfavorable
    still does not work through Logos with Claude Code. Every turn fails with

    Logos: gpt-6-luna rejects function tools combined with reasoning_effort on /v1/chat/completions. wasnertobias, GitHub issue author (no role stated), self-described, Oct 12, 2026. gpt-6-luna through the Logos gateway with Claude Code, function tools plus reasoning_effort on Chat Completions.

  • Unfavorable
    switching Rancher AI v1.1.0 from GPT-5.6 Luna to GPT-6 Luna causes chat requests to fail with HTTP 400

    Support GPT-6 Luna tool calling with the OpenAI Responses API. alvarogomez93, GitHub issue author (no role stated), self-described, Sep 23, 2026. GPT-6 Luna replacing GPT-5.6 Luna in Rancher AI v1.1.0, Chat Completions with tools.

  • Unfavorable
    The model only accepts tools when `reasoning_effort` is sent explicitly as `"none"`

    Combo fallback to gpt-6-luna fails with 400 when tools + reasoning_effort are sent. pitupi, GitHub issue author (no role stated), self-described, Oct 12, 2026. gpt-6-luna as an OmniRoute fallback step for an agent sending tools and reasoning_effort high.

  • Unfavorable
    fails tool-call discipline in **both directions**

    gpt-6-luna tool-call discipline fails both directions. mrwogu, GitHub issue author (no role stated), self-described, Oct 7, 2026. gpt-6-luna behind hindsight-api-slim 0.10.2 with tool_choice required.

  • Unfavorable
    the agent often ends a turn after announcing its next step, without doing it

    Agent ends a turn early: submit batched with its first tool call (Codex gpt-6-luna). JaimeCernuda, GitHub issue author (no role stated), self-described, Sep 30, 2026. gpt-6-luna on Codex Direct with CLIO's text-mode tool protocol.

  • Unfavorable
    GPT-6 Luna excluded: its bug run searched the web with search turned off

    X post on gpt-6-luna test behavior. Tested Stack, independent AI tool-testing account, self-described, Oct 21, 2026. GPT-6 Luna on the publisher's bug-fix and control runs.

Long context 20%

  • Favorable
    An earlier compaction threshold substantially reduced that amplification in this test without preventing the model from completing the same style of repository audit and follow-up verification.

    Adaptive compaction threshold for large-context GPT-6 Luna Low agentic workloads. inglesenburgos, GitHub issue author (no role stated), self-described, Sep 25, 2026. GPT-6 Luna at Low reasoning in Kilo Code 7.7.7, against GPT-5.6 Luna Low.

  • Unfavorable
    the compaction gives error for gpt-6 luna even though it is not at max context lenght

    [Bug] Gpt-6 luna compaction error. suse-coder, GitHub issue author (no role stated), self-described, Sep 24, 2026. GPT-6 Luna in opencode v2.0.16.

  • Unfavorable
    Luna at max reasoning effort, even though its not optimal for long conversations

    Comment on: GPT-6 Sol and Luna. Alifatisk, Hacker News commenter, self-described, Sep 22, 2026. GPT-6 Luna at max reasoning on long conversations, discussed on its release thread.

  • Unfavorable
    Luna uses was more tokens and fills the context up way to fast

    Comment on: GPT-6 Sol and Luna. o_m, Hacker News commenter, self-described, Sep 22, 2026. GPT-6 Luna in back-and-forth sessions, discussed on its release thread.

  • Unfavorable
    Needle recall at 690K–909K is inconsistent on Sol and Luna, even though acceptance is consistent.

    Live receipts: GPT-6 Sol and Luna context acceptance and recall. myagizmaktav, Hermes agent issue reporter who ran live context tests, self-described, Sep 28, 2026. GPT-6 Luna on Codex OAuth at low reasoning, tested at 689,512 input tokens.

Developer experience 25%

  • Unfavorable
    using it interactively feels totally unusable because you have to wait for many turns before a useful outcome comes back

    X post by @kunchenguid. kunchenguid (Kun Chen), builder of the firstmate agent tool (stated in X bio and post), self-described, Sep 23, 2026. GPT-6 Luna at high reasoning as the firstmate agent.

  • Unfavorable
    it ignores your instructions and does its own thing. No matter how many constraints you give it.

    X post by @buildwithhassan. buildwithhassan (Hassan), software engineer who tests AI coding agents (stated in X bio), self-described, Oct 12, 2026. GPT-6 Luna as a coding agent and as a cheap helper inside Hermes, against GPT-6 Astra.

  • Favorable
    i enjoy it a lot more if i use a super fast model with low reasoning (gpt 6 luna low effort + fast mode)

    Hacker News comment by humlex. humlex, Hacker News commenter (no role stated), self-described, Sep 26, 2026. GPT-6 Luna at low effort with fast mode.

  • Unfavorable
    it "helpfully" included a third paragraph to point out that the author is opinionated

    Hacker News comment by pelican0. pelican0, Hacker News commenter (no role stated), self-described, Oct 12, 2026. GPT-6 Luna summarizing an article.

  • Favorable
    I dont have to do anything except change it to gpt-6-luna

    Hacker News comment by dhdsingfgg. dhdsingfgg, Hacker News commenter (no role stated), self-described, Sep 22, 2026. GPT-6 Luna as a drop-in replacement.

  • Unfavorable
    OpenAI models (Luna, and even Sol) seem to work noticeably worse in opencode than they do in Codex

    Collapse repeated encrypted Thought lines from GPT-6 Luna/Sol; review Luna session quality. brentyates-swx, GitHub issue author (no role stated), self-described, Sep 26, 2026. GPT-6 Luna via swx-azure in the opencode TUI.

  • Unfavorable
    Cannot utilize GPT 6 Luna model with OpenAI API Key in Local Mode

    Cannot utilize GPT 6 Luna model with OpenAI API Key in Local Mode. aaronge-2020, GitHub issue author (no role stated), self-described, Oct 23, 2026. GPT-6 Luna with an OpenAI API key in AnkiBrain Local Mode.

  • Unfavorable
    setting `ASSISTANT_MODEL=gpt-6-luna` does not bring the assistant back on its own

    AI Formula Assistant: default gpt-4o is removed and the named replacement refuses temperature 0. Lakshya-0910 (Lakshya), building a tool that checks model migrations (stated in issue), self-described, Oct 26, 2026. gpt-6-luna as the named replacement for gpt-4o-2024-08-06, Chat Completions with temperature 0.

Cost 79%

  • Favorable
    Somehow GPT-6 Luna is half the price of that again

    Claude Opus 5.5, GPT-6 Sol, GPT-6 Luna, and a new price war. Simon Willison, independent developer and Datasette creator (stated on his weblog), self-described, Sep 22, 2026. GPT-6 Luna running the Datasette Agent at agent.datasette.io.

  • Favorable
    20x cheaper than Opus 5.5 for high-volume routing

    X post by @alighodsi. Ali Ghodsi, CEO and co-founder of Databricks, as listed on the Databricks Data + AI Summit Tuesday Keynote session page (read Oct 26, 2026) (role source), Sep 28, 2026. GPT-6 Luna in Databricks' internal model test across 2,400 engineers. A partner account: the author's company sells or serves this model, so it counts toward no figure.

  • Favorable
    It was at least 20 times cheaper per-task than Opus 5.5 in every offline benchmark we tested and in observed online use

    X post by @pwendell. Patrick Wendell, co-founder and VP of engineering at Databricks, as listed on the Databricks Data + AI Summit Tuesday Keynote session page (read Oct 26, 2026) (role source), Sep 28, 2026. GPT-6 Luna in Databricks' online workload analysis of 2,400 engineers plus offline evals, routed through Unity Gateway. A partner account: the author's company sells or serves this model, so it counts toward no figure.

  • Favorable
    it's insanely cheap, even with the point below considered

    X post by @kunchenguid. kunchenguid (Kun Chen), builder of the firstmate agent tool (stated in X bio and post), self-described, Sep 23, 2026. GPT-6 Luna at high reasoning as the firstmate agent.

  • Favorable
    costing a tiny fraction of what opus 4.5 cost a year ago

    X post by @ZackKorman. Zack Korman, cofounder of Embroidery, building AI cybersecurity tools (stated in X bio), self-described, Oct 25, 2026. GPT-6 Luna.

  • Favorable
    was about 30% the cost of Haiku 5.5

    Hacker News comment by chriddyp. chriddyp, runs Plotly's DataAnalyticsBench (stated in comment), self-described, Oct 7, 2026. GPT-6 Luna on Plotly's DataAnalyticsBench.

  • Favorable
    its dirt cheap, yet highly capable

    Hacker News comment by Alifatisk. Alifatisk, Hacker News commenter (no role stated), self-described, Sep 29, 2026. GPT-6 Luna at XHigh in Codex.

  • Favorable
    My company has largely switched to Luna after Microsoft raised prices for Copilot

    Hacker News comment by rwyinuse. rwyinuse, Hacker News commenter (no role stated), self-described, Oct 12, 2026. GPT-6 Luna for programming at their company.

  • Favorable
    it's definitely very cheap

    Hacker News comment by pessimizer. pessimizer, Hacker News commenter (no role stated), self-described, Oct 8, 2026. GPT-6 Luna reviewing abstract game rules.

  • Unfavorable
    gpt-6-luna was sneakily added to the 1 mio free tokens group instead of 10 mio

    Hacker News comment by sunaookami. sunaookami, Hacker News commenter (no role stated), self-described, Sep 29, 2026. gpt-6-luna against gpt-5.6-terra.

  • Favorable
    a GBP 20 per month Plus subscription gets me basically all the GPT-6-Luna-xhigh I can eat

    Hacker News comment by tome. tome, Hacker News commenter (no role stated), self-described, Sep 26, 2026. GPT-6 Luna at xhigh on a Plus subscription, Haskell work.

  • Favorable
    gpt 6 Luna can be swapped for 5.6 terra or even sol in some cases, and it is much cheaper

    Hacker News comment by moomoo11. moomoo11, Hacker News commenter (no role stated), self-described, Sep 26, 2026. GPT-6 Luna on their own evals against GPT-5.6 Terra and Sol.

  • Favorable
    my weekly usage went from 57% to 56%

    Hacker News comment by epolanski. epolanski, Hacker News commenter (no role stated), self-described, Sep 23, 2026. GPT-6 Luna on the 20 euro GPT plan.

  • Unfavorable
    Apparently v4.1 flash uses 1.75 times as many tokens so still cheaper

    Hacker News comment by KoolKat23. KoolKat23, Hacker News commenter (no role stated), self-described, Sep 23, 2026. GPT-6 Luna through Nous, cache-heavy usage, against DeepSeek v4 and v4.1 Flash.

  • Favorable
    comparing Deepseek models to Luna, and to my surprise Luna won

    Hacker News comment by pavo-etc. pavo-etc, Hacker News commenter (no role stated), self-described, Sep 29, 2026. GPT-6 Luna in the pi-msg agent harness against DeepSeek Flash models.

  • Unfavorable
    it seems to be about twice as expensive as DS v4.1 Flash

    Hacker News comment by dools. dools, Hacker News commenter (no role stated), self-described, Sep 29, 2026. GPT-6 Luna against DeepSeek v4.1 Flash.

  • Favorable
    Luna comes out a fair amount cheaper due to more efficient tokenization and less outputs

    Hacker News comment by Farmadupe. Farmadupe, Hacker News commenter (no role stated), self-described, Oct 8, 2026. GPT-6 Luna on classification, batch and synchronous, against Claude Haiku 5.5.

  • Favorable
    and the pricing is cheap

    Hacker News comment by swalsh. swalsh, Hacker News commenter (no role stated), self-described, Oct 7, 2026. GPT-6 Luna in agent workflows.

  • Favorable
    not much can compete with GPT-6 Luna on cost / performance

    Hacker News comment by senordevnyc. senordevnyc, Hacker News commenter (no role stated), self-described, Sep 28, 2026. GPT-6 Luna in AI pipelines in their product.

  • Favorable
    and costs *15x* less [0]

    Hacker News comment by XCSme. XCSme, runs the aibenchy comparison site (stated in comment), self-described, Sep 23, 2026. GPT-6 Luna against GPT-5.6 Terra on aibenchy.

  • Favorable
    GPT-6 Luna being half the price of GPT-5.6 Luna is a really big deal

    Hacker News comment by simonw. simonw (Simon Willison), independent developer (stated in profile), self-described, Sep 22, 2026. GPT-6 Luna pelican tests across reasoning efforts.

  • Favorable
    my monthly token cost is going to be down atleast 50%

    Hacker News comment by dhdsingfgg. dhdsingfgg, Hacker News commenter (no role stated), self-described, Sep 22, 2026. GPT-6 Luna as a drop-in replacement.

  • Favorable
    Love the cost savings

    Hacker News comment by sfblah. sfblah, Hacker News commenter (no role stated), self-described, Sep 22, 2026. GPT-6 Luna on classification jobs.

  • Favorable
    gpt-6-luna, has really competitive pricing

    Hacker News comment by buckwheatmilk. buckwheatmilk, Hacker News commenter (no role stated), self-described, Sep 23, 2026. GPT-6 Luna replacing a fine-tuned GPT-4.1-mini for structured outputs.

  • Unfavorable
    The additional tokens wipe out the cost savings for us

    Hacker News comment by anelson. anelson, Hacker News commenter (no role stated), self-described, Sep 26, 2026. GPT-6 Luna against GPT-5.6 Luna on internal cybersecurity evals.

  • Unfavorable
    That caused context to grow much faster, which then amplified repeated cache reads on every model -> tool -> model cycle

    Adaptive compaction threshold for large-context GPT-6 Luna Low agentic workloads. inglesenburgos, GitHub issue author (no role stated), self-described, Sep 25, 2026. GPT-6 Luna at Low reasoning in Kilo Code 7.7.7, against GPT-5.6 Luna Low.

  • Unfavorable
    it will run the 5-hour limit out in less than 10 minutes using still the same GPT 6 Luna Medium

    Excessive Model Usage. pietertal, GitHub issue author (no role stated), self-described, Oct 19, 2026. GPT-6 Luna Medium in Codex on a Plus plan.

  • Favorable
    at $0.03-0.04 per run, against $0.45-0.86 for Gemini

    Decide the default model: Gemini 3.8 Flash vs GPT-6 Luna. stegra05, GitHub issue author (no role stated), self-described, Oct 21, 2026. GPT-6 Luna generating slide decks from a 72-slide lecture in blind-reviewed rounds.

  • Favorable
    and was dramatically cheaper

    Model routing v2: pin GPT-6 Luna across the agent pipeline. huangyingting, GitHub issue author (no role stated), self-described, Sep 23, 2026. GPT-6 Luna (copilot) at high and xhigh effort across nine Copilot CLI agents.

  • Favorable
    Above 100,000 tokens, Luna looks like a much better deal.

    Claude Haiku 5.5. Simon Willison, maintainer of the llm-anthropic plugin, self-described, Oct 7, 2026. GPT-6 Luna pricing against Claude Haiku 5.5.

Speed 45%

  • Favorable
    it seems to be fast and competent at both SQL queries

    Claude Opus 5.5, GPT-6 Sol, GPT-6 Luna, and a new price war. Simon Willison, independent developer and Datasette creator (stated on his weblog), self-described, Sep 22, 2026. GPT-6 Luna running the Datasette Agent at agent.datasette.io.

  • Unfavorable
    it's extremely slow, not in terms of time to first token or toks/sec, but how many turns it takes to get something done

    X post by @kunchenguid. kunchenguid (Kun Chen), builder of the firstmate agent tool (stated in X bio and post), self-described, Sep 23, 2026. GPT-6 Luna at high reasoning as the firstmate agent.

  • Unfavorable
    xHigh and Max take WAY too long (30 mins) compared to 6.1 Sol that completes the same thing at Low thinking in 4 minutes

    X post by @leeloumt. leeloumt (Liam Debono), builds Project Memory and OperAI (stated in X bio), self-described, Oct 22, 2026. GPT-6 Luna at Low, Med, High, xHigh and Max against GPT-6.1 Sol at Low on his memory project.

  • Unfavorable
    Luna took 0.66s at at the median and 1.27s at the p95. Versus 0.28s and 0.42s with Jev

    Hacker News comment by Bocajmai. Bocajmai, Hacker News commenter (no role stated), self-described, Oct 13, 2026. GPT-6 Luna ranking pages for a live phone agent, against Jev.

  • Favorable
    GPT 6 Luna in batch mode at 20 records per batch was about 1.6x faster

    Hacker News comment by CharlieDigital. CharlieDigital, Hacker News commenter (no role stated), self-described, Sep 29, 2026. GPT-6 Luna in batch mode, 20 records per prompt, against Jev.

  • Favorable
    dont have to wait around for 20minutes

    Hacker News comment by humlex. humlex, Hacker News commenter (no role stated), self-described, Sep 26, 2026. GPT-6 Luna at low effort with fast mode.

  • Favorable
    compared to GPT-6 luna it is much slower

    Hacker News comment by XCSme. XCSme, runs the aibenchy comparison site (stated in comment), self-described, Oct 7, 2026. GPT-6 Luna against Mistral Large 4 on aibenchy.

  • Favorable
    In my testing so far, I'm seeing 160-175ms end to end

    Hacker News comment by agentdev001. agentdev001, Hacker News commenter (no role stated), self-described, Oct 7, 2026. GPT-6 Luna behind the Decisions API.

  • Unfavorable
    6-Luna uses way more tokens to produce the same result at a given thinking effort, and takes longer to do so

    Hacker News comment by anelson. anelson, Hacker News commenter (no role stated), self-described, Sep 26, 2026. GPT-6 Luna against GPT-5.6 Luna on internal cybersecurity evals.

  • Unfavorable
    roughly twice the throughput of Luna and far lower latency

    Hacker News comment by Topfi. Topfi, Hacker News commenter (no role stated), self-described, Oct 7, 2026. GPT-6 Luna on OpenRouter against Claude Haiku 5.5.

  • Unfavorable
    GPT-6 Luna picking from the same list tied it on ranking, but was more than twice as slow

    Our RAG kept retrieving the wrong page, so we tested letting Jev pick pages instead. jacobsayora, developer building an AI phone receptionist, self-described, Oct 13, 2026. GPT-6 Luna picking the answering page from a list, against Jev.

Reliability Only concerns on record

  • Unfavorable
    I'm seeing some crappy error rates on the Openai models even on 6.1 sol and 6.0 luna

    Comment on 'Are GPT 5.6 models down?' in r/aws. Professional-Sir7048, uses Amazon Bedrock at work (stated in comment), self-described, Oct 5, 2026. GPT-6 Luna (written as 6.0 luna) on Amazon Bedrock.

  • Unfavorable
    when Luna hits the 60 s fallback timeout, no backend answers and the launch is refused

    Swarm tick classifier: one Luna timeout blocks launches. nestorcolt, GitHub issue author (no role stated), self-described, Oct 7, 2026. gpt-6-luna through Codex as the swarm classifier fallback.

  • Unfavorable
    every chat request that runs `openai.gpt-6-luna` returns an `error` event

    Production: every GPT-6 Luna request fails, so NWB, HED and BIDS return errors. bendichter, GitHub issue author (no role stated), self-described, Oct 6, 2026. openai.gpt-6-luna on Amazon Bedrock as the default chat model.

  • Unfavorable
    gpt-6-luna has been nerfed

    X post on gpt-6-luna test behavior. Roberto Mello, self-described longtime Postgres writer, Oct 24, 2026. GPT-6 Luna behavior over time.

  • Unfavorable
    GPT-6 Luna excluded: its bug run searched the web with search turned off, and its control run was unavailable.

    X post on gpt-6-luna test behavior. Tested Stack, independent AI tool-testing account, self-described, Oct 21, 2026. GPT-6 Luna on the publisher's bug-fix and control runs.

  • Unfavorable
    Even GPT 6 Luna is out of capacity on Codex now!

    GPT-6 Luna at capacity in Codex. The Vibe Coder (quantumaidev), X author using Codex, self-described, Oct 19, 2026. GPT-6 Luna in Codex.