OpenAI said GPT-5.4 and GPT-5.4mini will no longer be offered to users logged in into ChatGPT from August 31. The models will remain available via the OpenAI API and in Codex sessions authenticated with API keys.

2026-08-01

OpenAI said GPT-5.4 and GPT-5.4mini will no longer be offered to users logged in into ChatGPT from August 31. The models will remain available via the OpenAI API and in Codex sessions authenticated with API keys.