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OpenAI Codex character

GPT-5.3-Codex, GPT-5.2 and OpenAI Codex

3 products from OpenAI

Retired

GPT-5.3-Codex and GPT-5.2 deprecated in Codex

GPT-5.3-Codex and GPT-5.2 are no longer user-selectable in Codex for ChatGPT sign-in. API-key workflows are not affected.

Who is affected:
Codex users signed in with ChatGPT who used these models.
Action needed:
Switch to GPT-5.5, GPT-5.4 or GPT-5.4 mini.

Source

"GPT-5.3-Codex and GPT-5.2 are now deprecated as user-selectable models in Codex for users signed in with ChatGPT."

Codex changelog

Published

Open the sourcedevelopers.openai.com

Modelpeers tracks changes to AI agents and models, each from its source. Follow OpenAI Codex to get a weekly email when it changes.