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July 31, 2026·Source

GPT-5.4 and GPT-5.4 mini Retired from ChatGPT

Both models stop working for anyone signed in with a ChatGPT account on August 31, 2026. They stay available through the API.

Details

  • GPT-5.4 and GPT-5.4 mini stop being available to users signed in with ChatGPT on August 31, 2026
  • Both models stay on the OpenAI API
  • Codex sessions authenticated with an API key keep access, sessions authenticated through ChatGPT lose it

Best for

Auditing where you still call GPT-5.4 before the date passes.

When to use it

Saved prompts, custom GPTs, or Codex sessions are pinned to GPT-5.4 and need repointing.

Who benefits

ChatGPT and Codex users with anything hardcoded to the 5.4 family.

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