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Product Company

OpenAI

OpenAI develops AI models and products used by individuals, developers, and organizations, spanning general assistants, coding tools, and model access.

OpenAI's model families

  1. GPT TerraOpenAI's fast, efficient GPT tier for visual reasoning, computer use, and writing.GPT-6.1 Terra
  2. GPT SolOpenAI's GPT model tier for demanding everyday and agentic work.GPT-6.1 Sol
  3. GPT LunaOpenAI's most efficient GPT model tier for focused, high-volume tasks.GPT-6 Luna
  4. GPT AstraOpenAI's highest-capability GPT model tier.GPT-6 Astra
  5. GPT-5OpenAI's GPT-5 frontier models, released before the Sol, Terra and Luna tiers.GPT-5.5
  6. gpt-ossOpenAI's open-weight GPT models under the Apache 2.0 license.gpt-oss-120b
  7. GPT CodexOpenAI's GPT models tuned for agentic coding in Codex.GPT-5.3-Codex
Products
ChatGPT, Codex, OpenAI API
Model releases we track
12 in 7 families. Newest is GPT-6.1 Terra, released Oct 26, 2026.
GILD research
40 pieces
Official site
openai.com

Products

We cover 3 OpenAI products. Each opens on its own hub.

  1. ChatGPT+14 MixedOpenAI's assistant for individual work and shared Business or Enterprise workspaces.AI Assistant
  2. Codex+55 Strong positiveOpenAI's coding agent for the terminal, the IDE, the ChatGPT apps, and the cloud.AI Coding Agent
  3. OpenAI API+3 MixedOpenAI's developer platform for building on GPT models.AI Model API

Models

We track 12 OpenAI releases in 7 families, from gpt-oss-120b in Aug 2025 to GPT-6.1 Terra in Oct 2026.

  1. GPT Terra5.66.1
  2. GPT Sol5.666.1
  3. GPT Luna5.66
  4. GPT Astra6
  5. GPT-55.45.5
  6. gpt-oss120b
  7. GPT Codex5.3
Every release as a list (12)
  1. GPT-6.1 TerraGPT Terra, Current, in 4 products
  2. GPT-6.1 SolGPT Sol, Current, in 6 products
  3. GPT-6 SolGPT Sol, Legacy, in 5 products
  4. GPT-6 LunaGPT Luna, Current, in 6 products
  5. GPT-6 AstraGPT Astra, Current, in 6 products
  6. GPT-5.6 TerraGPT Terra, Current, in 5 products
  7. GPT-5.6 SolGPT Sol, Current, in 5 products
  8. GPT-5.6 LunaGPT Luna, Current, in 6 products
  9. GPT-5.5GPT-5, Current, in 2 products
  10. GPT-5.4GPT-5, Current, in 2 products
  11. GPT-5.3-CodexGPT Codex, Legacy, in 3 products
  12. gpt-oss-120bgpt-oss, Current, in 1 product
  1. GPT-6.1 TerraGPT Terra, Current, in 4 products
  2. GPT-6.1 SolGPT Sol, Current, in 6 products
  3. GPT-6 SolGPT Sol, Legacy, in 5 products
  4. GPT-6 LunaGPT Luna, Current, in 6 products
  5. GPT-6 AstraGPT Astra, Current, in 6 products
  6. GPT-5.6 TerraGPT Terra, Current, in 5 products
  7. GPT-5.6 SolGPT Sol, Current, in 5 products
  8. GPT-5.6 LunaGPT Luna, Current, in 6 products
  9. GPT-5.5GPT-5, Current, in 2 products
  10. GPT-5.4GPT-5, Current, in 2 products
  11. GPT-5.3-CodexGPT Codex, Legacy, in 3 products
  12. gpt-oss-120bgpt-oss, Current, in 1 product

Research

We have written 40 pieces on OpenAI and its products: 3 reviews, 19 comparisons, 5 research reports, and 13 buyer guides.

Reviews 3

  1. Codex Review: What to Settle Before Standardizing a Team on CodexChoose Codex to run one agent policy across a mixed fleet, native Windows included. Expect OpenAI-only models on ChatGPT plans and uneven results on large or ambiguous tasks.Codex, 4 min readRead the review
  2. OpenAI API Review: What to Settle Before Building on GPT ModelsWhat DoorDash, Grab, Asana and Ploy report from running GPT models in production, why GPT-6.1 Sol is the default for volume work, and how to plan around usage tiers, spend limits, retention, and model retirements.OpenAI API, 4 min readRead the review
  3. ChatGPT Review: What to Settle Before Rolling It Out Across TeamsBuy ChatGPT for one governed assistant across many roles, once credit caps, retention, and an enablement owner are in place.ChatGPT, 3 min readRead the review

Comparisons 19

  1. Claude Code vs Codex: Which Agentic Coding Workflow Fits Your Team?Codex, 22 min read
  2. Cursor vs Codex: Own Editor or ChatGPT-Bundled Agent?Codex, 4 min read
  3. Codex vs GitHub Copilot: ChatGPT-Bundled Agent or GitHub-Native Platform?Codex, 4 min read
  4. Codex vs Devin: Which Delegated Coding Agent Fits Your Team?Codex, 4 min read
  5. ChatGPT vs Claude: Matching Seat Prices, Different DefaultsChatGPT, 6 min read
  6. ChatGPT vs Gemini: A Separate Workspace or the One You Already Pay For?ChatGPT, 5 min read

Research 5

  1. ChatGPT Plans in 2026: What a Seat Actually BuysChatGPT, 3 min read
  2. Rolling Out ChatGPT: What Organizations ReportChatGPT, 3 min read
  3. Model API Pricing in 2026: Caching and Batch Change the Math3 min read
  4. OpenAI Platform Changes in 2026: What Retires and What Replaces ItOpenAI API, 3 min read
  5. Where OpenAI's Models Run: OpenAI, Azure, and Amazon BedrockOpenAI API, 3 min read

Buyer guides 13

  1. ChatGPT Rollout PlaybookChatGPT, 2 min read
  2. ChatGPT Usage and Spend Controls ChecklistChatGPT, 2 min read
  3. ChatGPT Data, Retention & Training ChecklistChatGPT, 2 min read
  4. Custom GPTs to Plugins: Migration ChecklistChatGPT, 1 min read
  5. Codex Workflow Playbook: From AGENTS.md to a Verified MergeCodex, 3 min read
  6. Codex Team Rollout Checklist: Plans, Owners, and a Measured PilotCodex, 3 min read