OpenAI API Models gpt-5.1-codex-max End of Life
Support dates and upgrade guidance — rebuilt from live data.
OpenAI API Models gpt-5.1-codex-max reached end of life on 23 Jul 2026. It no longer receives security fixes.
Support timeline
Official dates from the OpenAI API Models release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 19 Nov 2025 | 11mo ago |
| Active support ended | 22 Apr 2026 | security fixes only after this |
| Deprecated support ended | 23 Jul 2026 | 3mo ago |
| Latest release | — | final |
Where to go from gpt-5.1-codex-max
Recommended target: OpenAI API Models gpt-6.1-terra.
The newest actively supported branch is OpenAI API Models gpt-6.1-terra (latest release ).
Frequently asked questions
Is OpenAI API Models gpt-5.1-codex-max still safe to use?
OpenAI API Models gpt-5.1-codex-max reached end of life on 23 Jul 2026, 103 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download OpenAI API Models gpt-5.1-codex-max?
Yes — the final release (gpt-5.1-codex-max) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade OpenAI API Models gpt-5.1-codex-max to?
Upgrade to OpenAI API Models gpt-6.1-terra, the newest actively supported branch.