AI in CI/CDGitHub Copilot retires six models on September 1, and every Copilot surface is in scope
GitHub is deprecating Gemini 3.1 Pro, Claude Opus 4.5, Claude Opus 4.6, Claude Sonnet 4.5, Claude Sonnet 4.6 and Raptor Mini across all Copilot experiences on September 1, 2026, per its July 31 changelog. Individual annual subscribers keep Sonnet 4.6; everyone else has about four weeks to point workflows and integrations at replacements.