GitHub Copilot: Upcoming Deprecation of GPT-5.2 and GPT-5.2-Codex (github.blog)

GitHub has announced the upcoming deprecation of its GPT-5.2 and GPT-5.2-Codex models for all GitHub Copilot experiences, including Copilot Chat and code completions, effective June 1, 2026. Users are encouraged to transition to newer alternatives, namely GPT-5.5 and GPT-5.3-Codex, respectively. This shift underscores GitHub's commitment to maintaining a robust and updated AI toolbox for developers, ensuring they benefit from advancements in model performance and capabilities. The deprecation is significant for the AI/ML community as it reflects a broader trend towards continually enhancing developer tools through more sophisticated AI models. Copilot Enterprise administrators will need to adjust their settings to enable access to these newer models, promoting an efficient transition for users. Furthermore, this change highlights the importance of keeping workflows aligned with the latest innovations, which can substantially improve coding efficiency and effectiveness in software development environments. Users are advised to check their Copilot settings for the new models to seamlessly integrate these updates into their coding practices.