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Written by AI from the official notes. Check them for exact details.GPT-5.5 will be retired on October 14, 2026, affecting several OpenAI products.
- GPT-5.5 retires from ChatGPT, ChatGPT Work, and Codex on October 14, 2026.
- Users must switch to gpt-5.6-sol before the retirement date.
- Update all settings that currently use gpt-5.5.
Why it matters: Users of ChatGPT and Codex should prepare for the transition to avoid disruptions.
Full release notes
On October 14, 2026, GPT-5.5 will retire from ChatGPT, ChatGPT Work, and Codex on all plans, including consumer, Business, Enterprise, and Edu plans. This retirement does not apply to the OpenAI API.
For Codex with ChatGPT sign-in, switch from gpt-5.5 to gpt-5.6-sol (GPT-5.6 Sol) before the retirement date.
Update workspace defaults, saved model settings, managed configurations, custom agents, scheduled tasks, and scripts that still select gpt-5.5.
See GPT-5.5 retirement and workspace model availability for migration guidance.