GPT-5.2 and GPT-5.3-Codex have been sunset in Codex with ChatGPT subscriptions
OpenAI Developer Community
June 5, 2026
5.3 codex was perfect instruct model. 5.4 is garbage. They just want us all to move 5.5 and spend all the tokens faster.
@OpenAI_Support am I right?
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