GitHub has deprecated Gemini 2.5 Pro and Gemini 3 Flash across all GitHub Copilot experiences as of July 31, 2026, recommending Gemini 3.1 Pro (Preview) and Gemini 3.6 Flash as replacements.
GitHub will deprecate six models across all Copilot experiences on September 1, 2026, including Gemini 3.1 Pro, Claude Opus 4.5/4.6, Claude Sonnet 4.5/4.6, and Raptor Mini.