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Claude Opus model by Anthropic

Claude Opus 5

An earlier Claude Opus release for coding, agents, and professional work.

Official page
Offered in
4 products
Made by
Anthropic
Family
Claude Opus, version 5
Released
Jul 24, 2026 Legacy
In its family
Release 5 of 6 in Claude Opus. The newest is Claude Opus 5.5.

Strengths and weaknesses

Compare with other models Up to 3 beside Claude Opus 5

  • Claude Opus 5

Suggested comparisons

The models a buyer weighs against Claude Opus 5, picked on list price and on Artificial Analysis's Intelligence Index of overall quality. Add one to draw it beside Claude Opus 5.

Claude Opus 5AnthropicThis page, always on the chart

Ranked against the 40 current releases on this chart, Claude Opus 5 ranks first of 2 on Computer use, 5th of 39 on Hard reasoning and 5th of 31 on Factuality. It ranks lowest on Long context, 31st of 39. Instruction following: not yet published by Anthropic 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.

On the chart

  • Claude Opus 5This pageResults on 11 of 12 axes$5 / $2553 tokens/sFirst token in 69 s

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

Claude Opus 5 on each axis11 of 12 with a result

Beside the benchmarks

Cost, speed, capacity, quality and accuracy for Claude Opus 5, with where each figure sits among the 41 models GILD tracks. These measures stand beside the chart and never feed it.

Cost

$5.86per task

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

Speed

52tokens a second

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

First token
71 s
Whole answer
81 s

Capacity

1Mtokens

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

Reads
Text, Images

Quality

50.8of 100

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

GDPval knowledge work
1,722 Elo
Terminal-Bench 4.0
49.0%
Epoch Capabilities Index
164

Hallucination

60.8%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
60.9%

Where you can get it

14of 19 routes

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

Open weights
No
Licence
Commercial Terms of Service
Every route and price

Figures from Artificial Analysis, Anthropic, 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 Claude Opus 5: Cached input and Max output.

Every value with its benchmark, run and source

Claude Opus 5's result on each axis, with the benchmark, the setting and run, who reported it, the source and the date
AxisBenchmark and settingClaude Opus 5RunSourceDate
Agentic codingTerminal-Bench 4.0Pass@1 averaged over 3 runs, mini-swe-agent harness53.5%Claude Opus 5Effort: not published. Harness: mini-swe-agent.Vals.aiOct 24, 2026
CodeSciCodeSubproblem accuracy, pass@1, highest effort run56.4%Claude Opus 5 (Max)Effort: max. Harness: none.Artificial AnalysisOct 28, 2026
MathFrontierMath Tiers 1-3Accuracy, pass@1, highest effort run85.6%Effort: max. Harness: none.Epoch AIJul 24, 2026
ScienceGPQA DiamondAccuracy, pass@1, highest effort run93.9%Effort: max. Harness: none.Epoch AIJul 24, 2026
Hard reasoningHumanity's Last ExamAccuracy, text-only questions, no tools54.9%Claude Opus 5 (Max)Effort: max. Harness: none.Artificial AnalysisOct 28, 2026
Tool useAutomationBench-AAScore, Artificial Analysis run56.6%Claude Opus 5 (Max)Effort: max. Harness: Artificial Analysis AutomationBench harness.Artificial AnalysisOct 28, 2026
Computer useOSWorld 2.1Partial score, full 108-task set, v2.1 release. The OSWorld team's own run at max effort, with its batch tool and a 500-step budget. It fully completed 44.33% of tasks.77.7%Claude Opus 5Effort: max. Harness: OSWorld team harness.Not drawn: Anthropic 70.6% in its maker's own harness, Jul 24, 2026. SourceNot drawn: Anthropic 75.4% in its maker's own harness, Sep 1, 2026. SourceNot drawn: OpenAI 70.2% in another lab's harness, Sep 22, 2026. SourceNot drawn: Anthropic 74% in its maker's own harness, Sep 22, 2026. SourceOSWorld teamOct 15, 2026
Long contextAA-LCR v1.1Accuracy, Artificial Analysis run79.3%Claude Opus 5 (Max)Effort: max. Harness: none.Artificial AnalysisOct 28, 2026
MultimodalMMMU-ProOverall accuracy, no tools84.7%Claude Opus 5 (Max)Effort: max. Harness: none.Artificial AnalysisOct 28, 2026
FactualityAA-Omniscience AccuracyAccuracy, Artificial Analysis run60.9%Hallucination rate 60.8% in the same run (lower is better)Claude Opus 5 (Max)Effort: max. Harness: none.Artificial AnalysisOct 26, 2026
Answers in fullSpeechMap% Complete over 2,120 contested requests, reasoning-on entry. With reasoning on, SpeechMap counted 22.3% of requests denied and 3.5% evaded. With reasoning off, the model completes 59.1%.73.7%0.5% of requests failed at the provider and count against itEffort: reasoning on. Harness: none.SpeechMap.AIOct 27, 2026
Instruction followingMultiChallengeAccuracy, Scale AI runNot yet published by Anthropic or any independent evaluator, checked Nov 2, 2026

Price and speed

  • Claude Opus 5 lists at $5 per million input tokens and $25 per million output tokens. Anthropic pricing, Oct 26, 2026.
  • Claude Opus 5, at max effort, writes 53.3 output tokens per second on Anthropic's API, and its first token arrives 69 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
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 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 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%
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 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 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
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. Claude Haiku 5.555%
  27. GPT-5.6 Terra55%
  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. Claude Opus 4.748.9%OSWorld team's run, OSWorld 2.0
  28. GPT-6 Luna48.9%Anthropic's run, OSWorld 2.1
  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. Claude Haiku 5.582.7%
  17. Claude Sonnet 5.582.7%
  18. GPT-6.1 Terra82.7%
  19. DeepSeek V4.1 Flash82.7%
  20. Claude Fable 582.3%
  21. Ling 3.1 Flash82.3%
  22. Claude Sonnet 582%
  23. GPT-5.482%
  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. Claude Opus 584.7%
  6. GPT-6.1 Terra84.7%
  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 Claude Opus 5 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 Claude Opus 5: the value, the run it comes from, the publisher and the day it was read
MeasureClaude Opus 5RunSourceRead
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.1MAnthropic's pricing page: Claude 4.6 and later models, except Claude Haiku 5.5, include the full 1M token context windowAnthropicOct 28, 2026
ReadsThe kinds of input the model accepts.Text, ImagesArtificial AnalysisOct 26, 2026
LicenceThe terms the weights or the service are offered under.Commercial Terms of ServiceAnthropicNov 1, 2026
Open weightsWhether the maker publishes the weights for anyone to run.NoArtificial AnalysisOct 26, 2026
Routes offering itOf the 19 clouds, gateways and coding products GILD tracks, how many offer the release today, preview included.14 of 19GILD route matrixOct 28, 2026
Cost
Answer tokens per taskLower is better. Answer tokens per Intelligence Index task, reasoning excluded.29,719Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Cost per task, cache readsLower is better. The cache-read share of AA's cost per Intelligence Index task.$3.16Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Cost per task, cache writesLower is better. The cache-write share of AA's cost per Intelligence Index task.$0.76Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Cost per task, inputLower is better. The input-token share of AA's cost per Intelligence Index task.$4.05Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Cost per task, outputLower is better. The answer-token share of AA's cost per Intelligence Index task.$1.81Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Cost per task, reasoningLower is better. The reasoning-token share of AA's cost per Intelligence Index task.$1.07Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Cost per taskLower is better. What one Intelligence Index task cost AA at list price, input, cache, output and reasoning tokens together.$5.86Claude Opus 5 (Max)Artificial AnalysisOct 26, 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.$7,275Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Output tokens per taskLower is better. Tokens the model wrote per Intelligence Index task, reasoning included: how verbose it is.72,511Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Reasoning tokens per taskLower is better. Reasoning tokens per Intelligence Index task.42,793Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Speed
End-to-end response timeLower is better. Seconds AA measures for a whole response on its standard prompt.81 sClaude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Time to first answer tokenLower is better. Seconds until the first answer token, after any reasoning, on AA's API runs.71 sClaude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Output speedMedian output tokens per second on AA's API runs, with the 5th and 95th percentile when AA prints them.52 tokens/sClaude Opus 5 (Max)Artificial AnalysisOct 26, 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.853 sClaude Opus 5 (Max)Artificial AnalysisOct 26, 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.71 sClaude Opus 5 (Max)Artificial AnalysisOct 26, 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.60.8%Max effortArtificial AnalysisOct 26, 2026
Omniscience accuracyShare of AA-Omniscience knowledge questions answered correctly.60.9%Max effortArtificial AnalysisOct 26, 2026
Omniscience indexAA-Omniscience index: correct answers minus wrong answers, declines neutral, -100 to 100.37.1Claude Opus 5 (Max)Artificial AnalysisOct 26, 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.59.9%Max effortEpoch AIAug 10, 2026
Knowledge work
AA-BriefcaseAA-Briefcase overall Elo for long business deliverables, with AA's 95% interval.1,657Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
AnalystAgent (AA run)AA's AnalystAgent score for analyst workflows.53.8%Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
APEX-Agents (maintainers)APEX-Agents pass@1 from the maintainers, as Epoch AI republishes it.65.8%Max effortMercor (via Epoch AI)Oct 26, 2026
GDP-PDF (AA run)Share of GDP-PDF document tasks where every check passes.21.6%Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
GDPval-AAGDPval-AA Elo: AA's run of economically valuable knowledge-work tasks, graded pairwise, with AA's interval.1,722Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
MLCR (AA run)AA's MLCR overall score for long, multi-document reading.11.1%Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Vending-Bench 2Vending-Bench 2 final balance of a simulated vending business run by the model, as Epoch AI republishes it.$11,182Andon Labs (via Epoch AI)Oct 26, 2026
Capability beyond the chart
AA-LCRAA long-context reasoning accuracy.79.3%Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
ALE-BenchALE-Bench performance rating on long optimization contests, as Epoch AI republishes it.2,165High effortSakana AI (via Epoch AI)Oct 26, 2026
ARC-AGI-2ARC-AGI-2 score from the ARC Prize maintainers, as Epoch AI republishes it.90.4%Max effortARC Prize Foundation (via Epoch AI)Oct 26, 2026
Chess puzzles (Epoch)Share of chess puzzles solved, Epoch AI's run.43%Max effortEpoch AIOct 13, 2026
CritPt (AA run)Share of CritPt research-level physics problems solved in AA's run.29.1%Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
CursorBenchCursorBench score from Cursor, as Epoch AI republishes it.46.6%Max effortCursor (via Epoch AI)Oct 26, 2026
DeepSWEDeepSWE pass@1, as Epoch AI republishes it.73.6%Max effortDatacurve (via Epoch AI)Oct 26, 2026
DTBenchDTBench accuracy, as Epoch AI republishes it.97.6%Max effortRedwood Research (via Epoch AI)Oct 26, 2026
EnterpriseOps-Gym (AA run)AA's EnterpriseOps-Gym score for enterprise operations agents.47.5%Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Epoch Capabilities IndexEpoch Capabilities Index: Epoch AI's composite across its benchmark hub, with its confidence interval.164Claude Opus 5Epoch AIOct 26, 2026
FrontierMath Tier 4 (Epoch)Share of FrontierMath Tier 4 research math problems solved, Epoch AI's run.73.2%Max effortEpoch AIJul 24, 2026
FrontierMath Tiers 1 to 3 (Epoch)Share of FrontierMath Tiers 1 to 3 problems solved, Epoch AI's run.85.6%Max effortEpoch AIJul 24, 2026
FrontierSWEFrontierSWE score, as Epoch AI republishes it.52.0%Max effortFrontierSWE (via Epoch AI)Oct 26, 2026
GPQA Diamond (AA run)GPQA Diamond accuracy in AA's run.93.2%Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
GPQA Diamond (Epoch)GPQA Diamond accuracy, best scorer, Epoch AI's run.93.9%Max effortEpoch AIJul 24, 2026
Humanity's Last Exam (AA run)Share of Humanity's Last Exam questions answered correctly in AA's run.54.9%Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Intelligence IndexArtificial Analysis Intelligence Index: AA's composite of its own evaluation runs, 0 to 100 points.50.8Claude Opus 5 (Max)Artificial AnalysisOct 26, 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.63.3Max effortRedwood Research (via Epoch AI)Oct 26, 2026
MMMU-Pro (AA run)Multimodal understanding accuracy on MMMU-Pro in AA's run.84.7%Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Mystery game puzzles (Epoch)Share of mystery game puzzles solved, Epoch AI's run.59%Max effortEpoch AIJul 25, 2026
OTIS Mock AIME (Epoch)Share of OTIS Mock AIME 2024 to 2025 problems solved, Epoch AI's run.98.9%Max effortEpoch AIJul 24, 2026
ProofBenchShare of ProofBench proofs graded correct, from Vals AI as Epoch AI republishes it.99%Max effortVals AI (via Epoch AI)Oct 26, 2026
SciCode (AA run)SciCode subproblem accuracy in AA's run.56.4%Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
tau-Banking (AA run)AA's tau-Banking tool-use score.42.1%Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Terminal-Bench 4.0 (AA run)Share of Terminal-Bench 4.0 tasks solved in AA's own harness.49.0%Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Terminal-Bench Science (AA run)Share of Terminal-Bench Science tasks solved in AA's harness.28.6%Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
WebDev ArenaWebDev Arena score from human pairwise votes on web builds, with its 95% interval, as Epoch AI republishes it.1,687Max effortLMArena (via Epoch AI)Oct 26, 2026
WeirdML v3, best runWeirdML v3 maximum performance across runs, as Epoch AI republishes it.32.5%Extra-high effortHåvard Tveit Ihle (via Epoch AI)Oct 26, 2026
Domains
EconomicsArtificial Analysis capability score for economics questions, 0 to 100 points.60.8Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
EngineeringArtificial Analysis capability score for engineering questions, 0 to 100 points.54Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Finance and accountingArtificial Analysis capability score for finance and accounting questions, 0 to 100 points.54.9Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Healthcare and medicalArtificial Analysis capability score for healthcare and medical questions, 0 to 100 points.46.7Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
LegalArtificial Analysis capability score for legal questions, 0 to 100 points.57.3Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026
Strategy and operationsArtificial Analysis capability score for strategy and operations questions, 0 to 100 points.56.6Claude Opus 5 (Max)Artificial AnalysisOct 26, 2026

Routes, prices and uptime

Where Claude Opus 5 is offered, what each route charges, and how each endpoint is holding up.

Where it is offered

14 of 19 routes GILD tracks offer Claude Opus 5 today, preview included. Read Oct 28, 2026 from each route's own pages.

RouteStatusModel IDLimits and lifecycleSources
Amazon BedrockAvailableanthropic.claude-opus-5us./eu./au./in./global. profiles; Active, EOL not sooner than July 24, 2027; tiers: Standard and Batch (Priority, Flex, Reserved not supported); context / output 1M / 128KAmazon Web Services, Models at a glanceAmazon Web Services, Claude Opus 5
Claude CodeAvailableclaude-opus-5By full model name on the Anthropic API, or provider ARN, version or deployment name; aliases resolve per provider; takes low, medium, high, xhigh and max effort levels (page read Oct 28, 2026)Anthropic
Claude on Google Cloud (Anthropic managed)Availableclaude-opus-5Claude API model IDs (dated IDs use a hyphen)Anthropic, Claude Opus 5Anthropic, Claude Models on Google Cloud (Anthropic managed)
Claude Platform on AWSAvailableclaude-opus-5Same ID as the Claude APIAnthropic
CursorAvailableavailable, hidden by default (fast as claude-opus-5-fast); Premium plan or higher, API list priceAnysphere (Cursor)
DatabricksAvailabledatabricks-claude-opus-5availableDatabricks, Databricks-hosted inferenceDatabricks, Detailed list of models supported by Databricks Foundation Model APIs
The maker's own APIAvailableclaude-opus-5context / max output 1M / 128K; status per deprecations table; fast mode research preview at US$10/US$50 with beta headerAnthropic, Claude Opus 5Anthropic, Model deprecationsAnthropic, Fast mode
GitHub CopilotAvailablenot statedpicker label Claude Opus 5available (GA)GitHub
GitHub ModelsRetirednot applicableservice retiredservice retired July 30, 2026GitHub, GitHub Models
Google Cloud Vertex / Agent Platform (Google managed)Availableclaude-opus-5 (GA)retirement not sooner than Jan 24, 2027; input / output 1,000,000 / 128,000Google, Anthropic's Claude on Google Cloud modelsGoogle, Anthropic's Claude Opus 5 on Google CloudAnthropic
Microsoft FoundryAvailableclaude-opus-5deployment name defaults to model ID; hosted on Azure and Anthropic; context 1M; no Message Batches APIAnthropicMicrosoft Learn
OpenCodeAvailableclaude-opus-5OpenCode Zen gateway, Anthropic Messages endpointAnomaly (OpenCode), ModelsOpenCode (Anomaly)
OpenRouterAvailableanthropic/claude-opus-5context / max completion 1,000,000 / 128,000OpenRouter
Snowflake CortexAvailableclaude-opus-5Regions: Cross Cloud (Any Region); AWS US (Cross-Region); AWS EU (Cross-Region); AWS AU (Cross-Region). Context 1,000,000; maximum output 128,000 tokens.Snowflake
Windsurf / DevinAvailableclaude-opus-5-highclaude-opus-5-high-fastclaude-opus-5-lowclaude-opus-5-low-fastclaude-opus-5-maxclaude-opus-5-max-fastclaude-opus-5-mediumclaude-opus-5-medium-fastclaude-opus-5-xhighclaude-opus-5-xhigh-fastavailable (plus Fast variants)Cognition (Devin, formerly Windsurf), AI ModelsCognition (Devin, formerly Windsurf), Compliance and Availability

Not offered on 1 route: Antigravity.

3 routes do not say: Codex, Gemini CLI and Grok Build.

What each of these 4 routes' pages say, with sources
RouteStatusModel IDLimits and lifecycleSources
AntigravityNot offerednot listed; Gemini CLI serves Gemini models onlyGoogle
CodexNot statedCodex model docs list OpenAI models only
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 Claude API, at $5 / $25 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.

RouteStandard, in / outCache readOther ratesSource, or uptime (1 day / 30 min) and limits
Claude APIMakerLowest$5 / $25Fast mode $10 / $50, fast mode, research previewAnthropic, Oct 26, 2026Anthropic, Oct 28, 2026
Artificial Analysis price record$5 / $25$0.5Blended $10, 3 input : 1 output, no cacheBlended $3.85, 7 cache-hit : 2 input : 1 outputCache write $6.25Artificial Analysis, Oct 26, 2026

Lineup

Anthropic's 14 releases in 4 families, oldest to newest along each tier, with list price and speed. Claude Opus 5 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 Oct 28, 2026.

Products

We cover 4 products that offer Claude Opus 5 today: 3 subscriptions and 1 API.

Comparisons

GILD comparisons that name Claude Opus 5, then those of the clouds and APIs that serve it.

What practitioners report

Strongest on Long context, weakest on Reliability.

Each figure is the share of accounts naming Claude Opus 5 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 Claude Opus 5 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.50%6 favorable, 6 not, 12 authors
Tool use and structured outputWhether it calls tools correctly, returns valid structured output, and keeps agent loops on track.Needs 5 accounts from 3 authors3 favorable, 1 not, 4 authors
Long contextHow it holds up over long documents, large codebases, long sessions, and many images or PDFs.67%4 favorable, 2 not, 6 authors
Developer experienceHow it is to build with: prompting, steering, effort settings, and support across SDKs and providers.25%3 favorable, 9 not, 12 authors
CostWhat the work costs: price per task, token use, and what caching and batch save.43%3 favorable, 4 not, 7 authors
SpeedResponse time, time to first token, and throughput.60%3 favorable, 2 not, 5 authors
ReliabilityWhether requests keep succeeding: overloaded errors, outages, rate limits, and changes that broke what worked.13%1 favorable, 7 not, 8 authors
Every model on these seven axes
Share of accounts favorable on each axis for Claude Opus 5 and every other model GILD has accounts for
AxisClaude Opus 5Claude Haiku 5.5Claude Sonnet 5.5Claude Opus 5.5Claude Fable 5.1Claude Sonnet 5Claude Fable 5Claude Opus 4.8Claude Opus 4.7Claude Sonnet 4.6Claude Opus 4.6Claude Opus 4.5Claude Haiku 4.5Claude Sonnet 4.5GPT-6.1 TerraGPT-6.1 SolGPT-6 LunaGPT-6 AstraGPT-5.6 SolGPT-5.6 TerraGPT-5.6 LunaGPT-5.5GPT-5.4gpt-oss-120bGPT-6 SolGPT-5.3-CodexGemini 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 reasoning50%6 favorable, 6 not, 12 authors73%19 favorable, 7 not, 26 authors64%14 favorable, 8 not, 22 authors68%17 favorable, 8 not, 25 authors54%15 favorable, 13 not, 28 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 authors33%3 favorable, 6 not, 8 authors55%12 favorable, 10 not, 22 authors55%16 favorable, 13 not, 29 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 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 outputNeeds 5 accounts from 3 authors3 favorable, 1 not, 4 authors67%6 favorable, 3 not, 9 authors40%4 favorable, 6 not, 10 authors46%6 favorable, 7 not, 13 authors30%3 favorable, 7 not, 10 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 authors40%2 favorable, 3 not, 5 authors40%4 favorable, 6 not, 10 authors33%3 favorable, 6 not, 9 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 yet25%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 context67%4 favorable, 2 not, 6 authors29%2 favorable, 5 not, 7 authors60%3 favorable, 2 not, 5 authors80%8 favorable, 2 not, 10 authors63%5 favorable, 3 not, 8 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 authorsOnly concerns on record0 favorable, 1 not, 1 author38%3 favorable, 5 not, 8 authors20%1 favorable, 4 not, 5 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 yet25%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%3 favorable, 9 not, 12 authors25%2 favorable, 6 not, 8 authors38%5 favorable, 8 not, 13 authors38%6 favorable, 10 not, 16 authors50%7 favorable, 7 not, 14 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 authorsOnly concerns on record0 favorable, 2 not, 2 authors27%3 favorable, 8 not, 11 authors25%2 favorable, 6 not, 8 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 yet33%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
Cost43%3 favorable, 4 not, 7 authors69%20 favorable, 9 not, 29 authors45%10 favorable, 12 not, 22 authors56%15 favorable, 12 not, 27 authors20%4 favorable, 16 not, 20 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 authors80%8 favorable, 2 not, 9 authors74%14 favorable, 5 not, 19 authors79%22 favorable, 6 not, 26 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 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
Speed60%3 favorable, 2 not, 5 authors74%14 favorable, 5 not, 19 authors88%14 favorable, 2 not, 16 authors46%6 favorable, 7 not, 13 authors44%4 favorable, 5 not, 9 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 authors83%5 favorable, 1 not, 5 authors37%7 favorable, 12 not, 19 authors45%5 favorable, 6 not, 11 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 author45%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
Reliability13%1 favorable, 7 not, 8 authors20%1 favorable, 4 not, 5 authors18%2 favorable, 9 not, 11 authors13%1 favorable, 7 not, 8 authors9%1 favorable, 10 not, 11 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 authorsOnly concerns on record0 favorable, 1 not, 1 author13%1 favorable, 7 not, 8 authorsOnly concerns on record0 favorable, 5 not, 5 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 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 46 accounts behind Claude Opus 5's figures

GILD searched Hacker News, GitHub, Reddit, X, Artificial Analysis, OpenRouter and the web for accounts that name Claude Opus 5.

Quality and reasoning 50%

  • Favorable
    Claude Opus 5 (Max) is amongst the leading models in intelligence

    Claude Opus 5 (max) - Intelligence, Performance & Price Analysis. Artificial Analysis, independent model benchmark, self-described, Oct 26, 2026. Claude Opus 5 at max effort on the Artificial Analysis Intelligence Index.

  • Unfavorable
    I've eval'd these models for weeks against Gemini 3.8, Kimi K3 and Opus 5, and DeepSeek absolutely wins these evals

    Comment on Hacker News. pimeys, Hacker News commenter who prices agent work per token for customers, self-described, Sep 16, 2026. Opus 5 in the commenter's own agent evals against Gemini 3.8, Kimi K3 and DeepSeek.

  • Unfavorable
    Opus 5 was the laziest since 4.6 by far, often giving up after ten or fifteen minutes

    Comment on Hacker News. stymaar, Hacker News commenter, self-described, Oct 5, 2026. Opus 5 on long coding tasks.

  • Unfavorable
    Opus 5 was struggling, Opus 5.5 is doing really well

    Comment on Hacker News. askjdfksdbfhk, Hacker News commenter, self-described, Oct 9, 2026. Opus 5 on a deep learning research project of moderate complexity.

  • Favorable
    Claude Opus 5 and 5.5 are very good at implementing optimizations

    Comment on Hacker News. entrope, Hacker News commenter, self-described, Oct 22, 2026. Claude Opus 5 and Opus 5.5 implementing performance optimizations.

  • Favorable
    A simple prompt goes through research, design, verification, review and self-corrects constantly

    Comment on Hacker News. sph87, Hacker News commenter, self-described, Oct 12, 2026. Opus 5 in agentic coding workflows.

  • Favorable
    I just described the bugs and it fixed them. This was just Opus 5.

    Comment on Hacker News. SyzygyRhythm, Hacker News commenter, self-described, Oct 10, 2026. Opus 5 fixing bugs in a reverse engineering project.

  • Favorable
    I had Opus 5 review pdf schematics of a (human-designed) PCB that wasn't working right, and it found the root of both problems

    Comment on Hacker News. bizrod, Hacker News commenter, self-described, Sep 5, 2026. Opus 5 reviewing PDF schematics of a PCB.

  • Unfavorable
    They made gross errors all over the schematic

    Comment on Hacker News. the__alchemist, Hacker News commenter, self-described, Sep 17, 2026. Opus 5, Astra and Sol checking a PCB schematic.

  • Unfavorable
    Opus 5 has been absolutely horrible last couple of days, writing essays of code and comments, fixing one thing, breaking another

    Comment on Hacker News. zerof1l, Hacker News commenter, self-described, Aug 25, 2026. Opus 5 for coding, a month after release.

  • Favorable
    I will eat my hat if either one can come close to Opus 5 in actual real life "long-horizon software engineering" tasks

    Comment on Hacker News. caconym_, Hacker News commenter, self-described, Sep 3, 2026. Opus 5 against recent Gemini Flash models on long-horizon software engineering.

  • Unfavorable
    Opus 5 is not the best general-purpose code reviewer we tested

    Claude Opus 5: Code Review Benchmarks. Hendrik Krack, CodeRabbit, self-described, Jul 24, 2026. Opus 5 at medium, high and x-high effort in CodeRabbit's review harness and on agentic build work.

  • Favorable
    It very clearly has a good grasp of WebGl, and of what impacts page loading times and rendering speed

    Comment on Hacker News. onion2k, Hacker News commenter, self-described, Aug 2, 2026. Opus 5 and Sonnet 5 in Claude Code converting a game from three.js to ogl.js.

Tool use and structured output Needs 5 accounts from 3 authors

  • Favorable
    returns the typed response on us. Opus 5

    fix(aws): restore structured output for Claude 5 on Bedrock. JonZeolla, GitHub contributor to langchain-aws, self-described, Oct 20, 2026. Claude Opus 5 on Bedrock through Converse with a JSON schema, us., global., eu. and au. profiles.

  • Unfavorable
    good at orchestrating subagents they are trained to use, but worse as an agent within an external multi-agent orchestration system or just in turn-taking with humans. That was my experience with Opus 5

    Comment on Hacker News. notduckrabbit, Hacker News commenter, self-described, Sep 11, 2026. Opus 5 inside an external multi-agent orchestration system.

  • Favorable
    On larger agentic tasks, Opus 5 coordinated hundreds of background agents and showed much better design judgment than Opus 4.8

    Claude Opus 5: Code Review Benchmarks. Hendrik Krack, CodeRabbit, self-described, Jul 24, 2026. Opus 5 at medium, high and x-high effort in CodeRabbit's review harness and on agentic build work.

  • Favorable
    3 claude-opus-5 (xhigh) 85.80 ± 2.10

    MCP Atlas - Scale Labs Leaderboard. Scale Labs, MCP Atlas tool-use leaderboard, self-described, Oct 26, 2026. claude-opus-5 at xhigh effort on Scale's MCP Atlas tool-use benchmark.

  • Favorable
    It was able to drive Claude Code's integrated browser to measure the impact of changes

    Comment on Hacker News. onion2k, Hacker News commenter, self-described, Aug 2, 2026. Opus 5 and Sonnet 5 in Claude Code converting a game from three.js to ogl.js.

Long context 67%

  • Favorable
    Opus has noisier data than Sonnet but is similarly close to linear

    Long-context latency scales quadratically for GPT-5.6 but nearly linearly for Claude 5. Jason Li, researcher at Epoch AI, Sep 8, 2026. Claude Opus 5 through the API, reasoning disabled, contexts from 50k to 900k tokens.

  • Favorable
    Agentic workflows can run for days without stopping, without losing the thread or devolving into slop

    Comment on Hacker News. sph87, Hacker News commenter, self-described, Oct 12, 2026. Opus 5 in agentic coding workflows.

  • Unfavorable
    The context size is still not nearly as big as it needs to be to store all the code an enterprise needs

    Comment on Hacker News. mcny, Hacker News commenter, self-described, Aug 26, 2026. Opus 5 building a small project.

  • Favorable
    Opus 5 last week got to around 700k before I compacted between prompts, but also gave good performance

    Comment on Hacker News. birdsongs, Hacker News commenter, self-described, Sep 14, 2026. Opus 5 in long autonomous coding sessions.

  • Favorable
    I've been pushing the context window well into the 400-600k+ token range lately (mostly Opus 5)

    Comment on Hacker News. arcanemachiner, Hacker News commenter, self-described, Sep 18, 2026. Opus 5 with sessions in the 400-600k token range.

  • Unfavorable
    opus 5 came by default with 200k context and 1M gated behind usage tokens, auto-compaction by default, and it keeps telling you to clear and start from scratch all the time

    Comment on Hacker News. lucas_t_a, Hacker News commenter, self-described, Sep 6, 2026. Opus 5 in Claude Code with default settings.

  • Favorable
    I've had it running 8h+ of non-stop optimizations

    Comment on Hacker News. ricardobeat, Hacker News commenter, self-described, Oct 3, 2026. Opus 5 in Claude Code on long optimization runs.

Developer experience 25%

  • Unfavorable
    it generated 140M tokens, which is very verbose in comparison to the median of 87M

    Claude Opus 5 (max) - Intelligence, Performance & Price Analysis. Artificial Analysis, independent model benchmark, self-described, Oct 26, 2026. Claude Opus 5 at max effort on the Artificial Analysis Intelligence Index.

  • Unfavorable
    I was unable to use it in our account without having to enable the provider_data_share setting

    Comment on Hacker News. cjonas, Hacker News commenter, self-described, Jul 24, 2026. Claude Opus 5 on Amazon Bedrock.

  • Unfavorable
    any gap in specificity in my statement of a task would lead Opus 5 to invent an interpretation to fill the gap

    Comment on Hacker News. RGS1811, Hacker News commenter, self-described, Oct 1, 2026. Opus 5 in a coding agent, fixing a failing CI unit test.

  • Unfavorable
    I think Opus 5 was capable enough but spoke in riddles so you lost confidence quickly

    Comment on Hacker News. slaser79, Hacker News commenter, self-described, Oct 3, 2026. Opus 5 in Claude Code as an orchestration model.

  • Unfavorable
    lots of people moved away from Opus 5 because of it's awful English

    Comment on Hacker News. nl, Hacker News commenter, self-described, Oct 17, 2026. Opus 5 for knowledge work.

  • Unfavorable
    I often find Opus 5 too verbose

    Comment on Hacker News. osr00, Hacker News commenter, self-described, Sep 19, 2026. Opus 5 in Claude Code.

  • Favorable
    I found that Opus 5 is finally aware from the go that it is started in a specific sandbox

    Comment on Hacker News. rplnt, Hacker News commenter, self-described, Oct 4, 2026. Opus 5 in a sandboxed coding agent.

  • Unfavorable
    Opus 5 feels like it needs to present itself as smarter than it is, pushes back on the user

    Comment on Hacker News. accrual, Hacker News commenter, self-described, Sep 14, 2026. Opus 5 and Sonnet 5 for quick one-shot work.

  • Unfavorable
    the madness that is opus 5's extremely disorganized and verbose output

    Comment on Hacker News. rtrann, Hacker News commenter, self-described, Aug 27, 2026. Opus 5 with Claude output styles.

  • Favorable
    Plan mode has become pointless since Opus 5 came out, they know when to switch between planning and execution now

    Comment on Hacker News. ricardobeat, Hacker News commenter, self-described, Oct 3, 2026. Opus 5 in Claude Code on long optimization runs.

  • Unfavorable
    Opus 5 consistently comes at or near the top, but outputs constant unreadable jibberish

    Comment on Hacker News. cameronh90, Hacker News commenter, self-described, Aug 26, 2026. Opus 5 on benchmarks and in real use.

  • Unfavorable
    I forgot how awful using Opus 5 directly is

    Comment on Hacker News. nijave, Hacker News commenter, self-described, Sep 14, 2026. Opus 5 used directly after hitting a Fable weekly limit.

  • Favorable
    It takes time to clarify the goal, offers several credible approaches, and handles open-ended projects without rushing into the first solution.

    Claude Opus 5: Code Review Benchmarks. Hendrik Krack, CodeRabbit, self-described, Jul 24, 2026. Opus 5 at medium, high and x-high effort in CodeRabbit's review harness and on agentic build work.

Cost 43%

  • Unfavorable
    but particularly expensive when comparing to other models of similar price

    Claude Opus 5 (max) - Intelligence, Performance & Price Analysis. Artificial Analysis, independent model benchmark, self-described, Oct 26, 2026. Claude Opus 5 at max effort on the Artificial Analysis Intelligence Index.

  • Unfavorable
    If Kimi was about 30% of the price of Opus 5 for the same quality

    Comment on Hacker News. pimeys, Hacker News commenter who prices agent work per token for customers, self-described, Sep 16, 2026. Opus 5 in the commenter's own agent evals against Gemini 3.8, Kimi K3 and DeepSeek.

  • Favorable
    Opus 5 is just as good for this tbh and cheaper

    Comment on Hacker News. kodefreeze, Hacker News commenter, self-described, Sep 2, 2026. Opus 5 generating 3D models for an RTS game.

  • Favorable
    A Claude 20x sub running Sonnet 5/Opus 5 and light Fable usage gets me through the month

    Comment on Hacker News. halfmatthalfcat, Hacker News commenter, self-described, Aug 18, 2026. Opus 5 and Sonnet 5 on a Claude 20x subscription.

  • Unfavorable
    poor token efficiency of Opus 5

    Comment on Hacker News. viccis, Hacker News commenter, self-described, Sep 22, 2026. Opus 5 on a $20 Claude subscription.

  • Unfavorable
    I maxed out my 200$ Claude plan with 10b token on Opus 5

    Comment on Hacker News. impulser_, Hacker News commenter, self-described, Sep 22, 2026. Opus 5 on a $200 Claude plan.

  • Favorable
    Opus 5 on low is faster, cheaper

    Comment on Hacker News. datadrivenangel, Hacker News commenter, self-described, Aug 24, 2026. Opus 5 at low effort, against Sonnet 5 at high effort.

  • Unfavorable
    For every review call, Opus 5 reads about 50% more and writes about 65% more than the frontier models in our baseline

    Claude Opus 5: Code Review Benchmarks. Hendrik Krack, CodeRabbit, self-described, Jul 24, 2026. Opus 5 at medium, high and x-high effort in CodeRabbit's review harness and on agentic build work.

Speed 60%

  • Unfavorable
    At 52 tokens per second, Claude Opus 5 (Max) is notably slow

    Claude Opus 5 (max) - Intelligence, Performance & Price Analysis. Artificial Analysis, independent model benchmark, self-described, Oct 26, 2026. Claude Opus 5 at max effort on the Artificial Analysis Intelligence Index.

  • Unfavorable
    Despite this improvement, Opus still remained significantly noisier than other models.

    Long-context latency scales quadratically for GPT-5.6 but nearly linearly for Claude 5. Jason Li, researcher at Epoch AI, Sep 8, 2026. Claude Opus 5 through the API, reasoning disabled, contexts from 50k to 900k tokens.

  • Unfavorable
    The time-to-first-token seems dramatically better in Claude Code compared to Fable 5.1/Opus 5

    Comment on Hacker News. nr378, Hacker News commenter, self-described, Sep 26, 2026. Opus 5 in Claude Code, against Opus 5.5 and Fable 5.1.

  • Favorable
    Opus 5 on low is faster, cheaper, and better than Sonnet 5 on high

    Comment on Hacker News. datadrivenangel, Hacker News commenter, self-described, Aug 24, 2026. Opus 5 at low effort, against Sonnet 5 at high effort.

  • Favorable
    Claude Code Opus 5 can one-shot a script in 15 seconds that would have taken me 45 minutes to write

    Comment on Hacker News. ryandvm, Hacker News commenter, self-described, Oct 19, 2026. Opus 5 in Claude Code at work.

  • Favorable
    For quick one-shot type work I don't mind using Opus/Sonnet 5. They're good and fast

    Comment on Hacker News. accrual, Hacker News commenter, self-described, Sep 14, 2026. Opus 5 and Sonnet 5 for quick one-shot work.

  • Unfavorable
    It was still slower and less efficient than Fable 5

    Claude Opus 5: Code Review Benchmarks. Hendrik Krack, CodeRabbit, self-described, Jul 24, 2026. Opus 5 at medium, high and x-high effort in CodeRabbit's review harness and on agentic build work.

Reliability 13%

  • Unfavorable
    the week before the release Opus 5 started hallucinating (long loop and waste of token for single tasks)

    Comment on Hacker News. tebrun, Hacker News commenter, self-described, Oct 3, 2026. Opus 5 on coding tasks in the week before Opus 5.5 shipped.

  • Unfavorable
    Now Opus 5 is down. These two issues are really testing my patience.

    Comment on Hacker News. eis, Hacker News commenter, self-described, Sep 3, 2026. Opus 5 during the September 3 Anthropic error incident.

  • Unfavorable
    Opus 5 and to a lesser extent Fable 5 have clearly been quantised

    Comment on Hacker News. MyFirstSass, Hacker News commenter, self-described, Sep 1, 2026. Opus 5 on Claude subscriptions and the API.

  • Unfavorable
    When first released, Opus 5 worked well; now it's crap.

    Comment on Hacker News. zerof1l, Hacker News commenter, self-described, Aug 25, 2026. Opus 5 for coding, a month after release.

  • Unfavorable
    I was using Opus 5 and now I'm forced to switch to Sonnet 5

    Comment on Hacker News. damsta, Hacker News commenter, self-described, Sep 3, 2026. Opus 5 in Claude Code during the September 3 error incident.

  • Unfavorable
    Opus 5.5 is being served under opus 5 right now

    Comment on Hacker News. prodigycorp, Hacker News commenter, self-described, Sep 21, 2026. Opus 5 in the days before the Opus 5.5 release.

  • Unfavorable
    Opus 5 is the least reliable frontier-class model in the market

    Comment on Hacker News. rxyz, Hacker News commenter, self-described, Aug 26, 2026. Opus 5.

  • Favorable
    The page is currently tracking Opus 5, which was released July 24 and has not seen any updates since.

    Comment on Hacker News. ricardobeat, Hacker News commenter, self-described, Sep 21, 2026. Opus 5 on the MarginLab Claude Code SWE-Bench-Pro tracker.