GPT-5.2 and GPT-5.2-Codex deprecated
On June 5, 2026, GitHub announced the deprecation of its GPT-5.2 and GPT-5.2-Codex models. This change affects the availability of these specific models across the majority of GitHub Copilot experiences. Developers utilizing GitHub Copilot will find that these models are no longer supported in features such as Copilot Chat, inline code edits, various ask and agent modes, and standard code completions. The deprecation signals an evolution in the underlying AI models powering GitHub's developer tools, likely paving the way for newer, more advanced, or more efficient iterations. Users who previously relied on the distinct characteristics or performance of GPT-5.2 or GPT-5.2-Codex for their coding workflows will need to transition to the alternative models that remain active within the Copilot suite. This move is part of GitHub's ongoing maintenance and update cycle for its AI-powered development assistance platform, ensuring that the service continues to integrate current and optimized AI capabilities. The decision to deprecate these models suggests that GitHub is streamlining its offerings or has integrated superior models that supersede the capabilities of GPT-5.2 and GPT-5.2-Codex. While the announcement from the GitHub Changelog does not specify the reasons for deprecation or name replacement models, it indicates a shift in the foundational AI technologies underpinning Copilot's functionality. Developers should anticipate that future Copilot updates will leverage different models, potentially offering enhanced performance or new features, as GitHub continues to refine its AI-driven coding assistance.
Developers using GitHub Copilot will need to adapt to alternative models as GPT-5.2 and GPT-5.2-Codex are no longer supported across various Copilot experiences.