GPT-5.5 leaves Codex on 14 October. Find every place you pinned it before a script breaks

Fri, 09 Oct 2026 16:03:00 +0000

On 14 October, a line like codex exec -m gpt-5.5 "Summarise open failures" in a nightly workflow stops being a working command. OpenAI’s Codex changelog announced the retirement on 14 September: GPT-5.5 leaves ChatGPT, ChatGPT Work and Codex on all plans on 14 October 2026. Nobody gets paged for a deprecation notice from three weeks ago. They get paged when the job fails at 2am.

Migration on Tokenise

GPT-5.5 leaves Codex on 14 October. Find every place you pinned it before a script breaks