GitHub Deprecates GPT-5.2 and GPT-5.2 Codex Models Across Copilot Experiences

GitHub has announced the immediate deprecation of the GPT-5.2 and GPT-5.2-Codex models. This change impacts a wide array of GitHub Copilot features, including Copilot Chat, inline edits, ask and agent modes, and standard code completions. Engineering teams using these specific models will need to transition to alternative model options to maintain workflow continuity. The deprecation notice outlines the scope of impact and details the prerequisites for applying replacements across existing environments. Organizations managing Copilot seats must review their current model configurations to ensure that client editors and IDE extensions are set up to use the updated active models. While transition windows may vary, GitHub recommends immediate verification of your team configurations. Admins should monitor the output compatibility and evaluate any performance differences between the deprecated models and the newer alternatives during this deprecation phase.