OpenAI to remove GPT 5.2 and GPT 5.3 from Codex: Here is what is changing
Follow UsOpenAI is retiring GPT-5.2 and GPT-5.3-Codex from its Codex platform on 2 June
GPT-5.5 taking over as the default model for free plans
Both models will remain accessible via the OpenAI API
OpenAI is retiring two of its older coding models from ChatGPT Codex next week. Thibault Sottiaux, OpenAI’s engineering lead for Codex, announced on X that GPT-5.2 and GPT-5.3-Codex will be retired from the platform on 2 June for users logged in with a ChatGPT account. Instead, GPT-5.5 will replace them as the default model for free-plan users from now on. The change follows a similar retirement of early GPT-5 models from Codex that OpenAI carried out in April.
SurveySottiaux cited fleet simplification as the reason, maintaining that older models in an active compute fleet carry overhead costs. With GPT-5.2 now accounting for less than 1% of production usage, the case for keeping it in the web interface no longer holds up, he stated.
“Thinking back, quite crazy to think about the progress that has been made since December last year when GPT-5.2 was released. It now is seeing less than 1% of usage in production and is considered quite outdated,” he wrote.
The speed of the phase-out is notable. GPT-5.2 was launched in December 2025 and is being retired roughly six months later which is a sign of how quickly the goalposts for frontier AI are moving, even by OpenAI’s own internal standards. The newer versions are displacing predecessors faster than most software products go through a single update cycle.
However, developers who rely on either model for specific integrations or workflows are not completely cut off. Both GPT-5.2 and GPT-5.3-Codex will continue to be available through the OpenAI API after their removal from the web interface, allowing teams with existing pipelines built around these models to keep running without disruption. Sottiaux also clarified that GPT-5.3-Codex-Spark is not part of this phase-out and will remain available.
For most Codex users on free plans, the change will be seamless; they will simply find GPT-5.5 as their default from 2 June onwards.
Also Read: How to check if the image shared is generated or edited by OpenAI
