# OpenAI — AI model releases

OpenAI has 48 AI model releases tracked on AI Release Tracker, from Nov 30 2022 through Oct 26 2026. Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.

Official site: https://openai.com

## Releases, newest first

| Model | Release date | Licensing | Context window | Page |
| --- | --- | --- | --- | --- |
| GPT-6.1 Terra | Oct 26 2026 | Closed | 1.05M | https://aireleasetracker.com/model/openai/gpt-6.1-terra |
| GPT-6.1 Sol | Sep 29 2026 | Closed | 1.05M | https://aireleasetracker.com/model/openai/gpt-6.1-sol |
| GPT-6 Sol | Sep 22 2026 | Closed | 1.05M | https://aireleasetracker.com/model/openai/gpt-6-sol |
| GPT-6 Luna | Sep 22 2026 | Closed | 1.05M | https://aireleasetracker.com/model/openai/gpt-6-luna |
| GPT-6 Astra | Sep 3 2026 | Closed | 1.05M | https://aireleasetracker.com/model/openai/gpt-6-astra |
| GPT-5.6-Cyber | Aug 10 2026 | Closed | — | https://aireleasetracker.com/model/openai/gpt-5.6-cyber |
| GPT-5.6 Sol | Jun 26 2026 | Closed | 1.05M | https://aireleasetracker.com/model/openai/gpt-5.6-sol |
| GPT-5.6 Terra | Jun 26 2026 | Closed | 1.05M | https://aireleasetracker.com/model/openai/gpt-5.6-terra |
| GPT-5.6 Luna | Jun 26 2026 | Closed | 1.05M | https://aireleasetracker.com/model/openai/gpt-5.6-luna |
| GPT-5.5-Cyber | May 7 2026 | Closed | — | https://aireleasetracker.com/model/openai/gpt-5.5-cyber |
| GPT-5.5 | Apr 23 2026 | Closed | 1.05M | https://aireleasetracker.com/model/openai/gpt-5.5 |
| GPT-5.5-Pro | Apr 23 2026 | Closed | 1.05M | https://aireleasetracker.com/model/openai/gpt-5.5-pro |
| GPT-5.4 mini | Mar 17 2026 | Closed | 400k | https://aireleasetracker.com/model/openai/gpt-5.4-mini |
| GPT-5.4 nano | Mar 17 2026 | Closed | 400k | https://aireleasetracker.com/model/openai/gpt-5.4-nano |
| GPT-5.4 | Mar 5 2026 | Closed | 1.05M | https://aireleasetracker.com/model/openai/gpt-5.4 |
| GPT-5.4-Pro | Mar 5 2026 | Closed | 1.05M | https://aireleasetracker.com/model/openai/gpt-5.4-pro |
| GPT-5.3-Codex-Spark | Feb 12 2026 | Closed | 128k | https://aireleasetracker.com/model/openai/gpt-5.3-codex-spark |
| GPT-5.3-Codex | Feb 5 2026 | Closed | 400k | https://aireleasetracker.com/model/openai/gpt-5.3-codex |
| GPT-5.2 | Dec 11 2025 | Closed | 400k | https://aireleasetracker.com/model/openai/gpt-5.2 |
| GPT-5.1-Codex-Max | Nov 19 2025 | Closed | 400k | https://aireleasetracker.com/model/openai/gpt-5.1-codex-max |
| GPT-5.1 | Nov 12 2025 | Closed | 400k | https://aireleasetracker.com/model/openai/gpt-5.1 |
| GPT-5-Codex-Mini | Nov 7 2025 | Closed | — | https://aireleasetracker.com/model/openai/gpt-5-codex-mini |
| GPT-5-Codex | Sep 15 2025 | Closed | 400k | https://aireleasetracker.com/model/openai/gpt-5-codex |
| GPT-5 | Aug 7 2025 | Closed | 400k | https://aireleasetracker.com/model/openai/gpt-5 |
| GPT-5 mini | Aug 7 2025 | Closed | 400k | https://aireleasetracker.com/model/openai/gpt-5-mini |
| GPT-5 nano | Aug 7 2025 | Closed | 400k | https://aireleasetracker.com/model/openai/gpt-5-nano |
| GPT-5 Pro | Aug 7 2025 | Closed | 400k | https://aireleasetracker.com/model/openai/gpt-5-pro |
| gpt-oss-120b | Aug 5 2025 | Open Weight | 128k | https://aireleasetracker.com/model/openai/gpt-oss-120b |
| gpt-oss-20b | Aug 5 2025 | Open Weight | 128k | https://aireleasetracker.com/model/openai/gpt-oss-20b |
| o3-pro | Jun 10 2025 | Closed | 200k | https://aireleasetracker.com/model/openai/o3-pro |
| o3 | Apr 16 2025 | Closed | 200k | https://aireleasetracker.com/model/openai/o3 |
| o4-mini | Apr 16 2025 | Closed | 200k | https://aireleasetracker.com/model/openai/o4-mini |
| o4-mini-high | Apr 16 2025 | Closed | 200k | https://aireleasetracker.com/model/openai/o4-mini-high |
| GPT-4.1 | Apr 14 2025 | Closed | 1M | https://aireleasetracker.com/model/openai/gpt-4.1 |
| GPT-4.1 mini | Apr 14 2025 | Closed | 1M | https://aireleasetracker.com/model/openai/gpt-4.1-mini |
| GPT-4.1 nano | Apr 14 2025 | Closed | 1M | https://aireleasetracker.com/model/openai/gpt-4.1-nano |
| o1-pro | Mar 19 2025 | Closed | 200k | https://aireleasetracker.com/model/openai/o1-pro |
| GPT-4.5 | Feb 27 2025 | Closed | 128k | https://aireleasetracker.com/model/openai/gpt-4.5 |
| o3-mini | Jan 31 2025 | Closed | 200k | https://aireleasetracker.com/model/openai/o3-mini |
| o3-mini-high | Jan 31 2025 | Closed | 200k | https://aireleasetracker.com/model/openai/o3-mini-high |
| o1 | Dec 5 2024 | Closed | 200k | https://aireleasetracker.com/model/openai/o1 |
| o1-preview | Sep 12 2024 | Closed | 128k | https://aireleasetracker.com/model/openai/o1-preview |
| o1-mini | Sep 12 2024 | Closed | 128k | https://aireleasetracker.com/model/openai/o1-mini |
| GPT-4o mini | Jul 18 2024 | Closed | 128k | https://aireleasetracker.com/model/openai/gpt-4o-mini |
| GPT-4o | May 13 2024 | Closed | 128k | https://aireleasetracker.com/model/openai/gpt-4o |
| GPT-4 Turbo | Nov 6 2023 | Closed | 128k | https://aireleasetracker.com/model/openai/gpt-4-turbo |
| GPT-4 | Mar 14 2023 | Closed | 8k | https://aireleasetracker.com/model/openai/gpt-4 |
| GPT-3.5 | Nov 30 2022 | Closed | — | https://aireleasetracker.com/model/openai/gpt-3.5 |


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Canonical page: https://aireleasetracker.com/company/openai
Site index: https://aireleasetracker.com/llms.txt
Source: AI Release Tracker (https://aireleasetracker.com). Most benchmark scores come from lab launch material; gathered results identify the leaderboard that published them.