Upcoming deprecation of Claude Sonnet 4 in GitHub Copilot - GitHub Changelog
… We will deprecate the following model across all GitHub Copilot experiences including Copilot Chat, inline edits, ask and agent modes, and code completions on 5/6/2026: Model Deprecation date Suggested alternative Claude Sonnet 4 2026-05-06 Claude Sonnet 4.6 Please update your workflows and integra… …