GPT-5.5 retires from Codex on Oct 14, 2026
DiscontinuedAll users
GPT-5.5 will retire from Codex for users with ChatGPT sign-in on October 14, 2026, at noon PDT (19:00 UTC). OpenAI API and Codex sessions authenticated with an API key are not affected.
- Date
- Your time: 2026-10-14 19:55 UTC
- Source type
- Official blogSource: learn.chatgpt.com