GitHub Copilot: GPT-5.2 and GPT-5.2-Codex deprecated (github.blog)

GitHub has officially deprecated the GPT-5.2 and GPT-5.2-Codex models in its Copilot product as of June 5, 2026, with users encouraged to transition to newer versions, GPT-5.5 and GPT-5.3-Codex, respectively. While these older models remain accessible for specific tasks such as code review, most Copilot functionalities—including Copilot Chat and inline edits—will no longer support them. GitHub Enterprise administrators must ensure that their settings allow access to the recommended models to maintain seamless workflows, although no action is needed to remove the deprecated versions. This announcement is significant for the AI and machine learning community, highlighting GitHub's commitment to keeping its tools optimized with the latest advancements in AI technology. By phasing out older models, GitHub is ensuring that developers leverage more accurate and efficient coding assistance, which can lead to significant improvements in productivity and code quality. The transition to these enhanced models is part of a broader trend in the tech landscape—emphasizing the importance of continual updates in AI applications to harness the most advanced capabilities.