GPT-5.5 retires from ChatGPT, Work, and Codex; API stays available
On Oct 14, OpenAI retired GPT-5.5 from ChatGPT, ChatGPT Work, and Codex on every plan; the OpenAI API is unaffected. Codex users on ChatGPT sign-in should replace gpt-5.5 with gpt-6-sol (Plus/Pro/Business/Enterprise/Edu) or gpt-6-luna (Free/Go desktop), including config.toml, custom agents, and scheduled tasks.