GPT-5.2 and GPT-5.3-Codex have been sunset in Codex with ChatGPT subscriptions
OpenAI Developer Community
June 4, 2026
> This thread is slowly creeping its way to the top slot for the year on the Codex forum. Keep bumping this so they have no choice but to acknowledge what a blatant screw up/over this is.
Discussion in the ATmosphere