GitHub to Deprecate Claude Sonnet 3.5 in November 2025
GitHub will phase out Claude Sonnet 3.5 across all Copilot experiences by November 6, 2025, pushing users to transition to newer models. The change affects Copilot Chat, inline edits, and code completions—part of an ongoing effort to enhance functionality for free-tier users.
Enterprise administrators must enable alternative models via Copilot settings, with no further action needed post-deprecation. The MOVE underscores GitHub's commitment to iterative AI improvements without disrupting workflows.