OpenAI: GPT-5.4 and GPT-5.4mini will no longer be available to users logging into ChatGPT starting August 31. These models will continue to be available in the OpenAI API and Codex sessions that use API keys for authentication.
2026-08-01
OpenAI: GPT-5.4 and GPT-5.4mini will no longer be available to users logging into ChatGPT starting August 31. These models will continue to be available in the OpenAI API and Codex sessions that use API keys for authentication.