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… Bringing developer choice to Copilot with Anthropic’s Claude 3.5 Sonnet, Google’s Gemini 1.5 Pro, and OpenAI’s o1-preview At GitHub Universe, we announced Anthropic’s Claude 3.5 Sonnet, Google’s Gemini 1.5 Pro, and OpenAI’s o1-preview and o1-mini are coming to GitHub Copilot—bringing a new level of… …

Mar 26, 2026 · Greg Ose

github.blog › ai-and-ml › github-copilot

A cheat sheet to slash commands in GitHub Copilot CLI

… Claude Sonnet 4.5 1x default current 2. Claude Opus 4.5 Preview 1x 3. Claude Haiku 4.5 0.33x 4. Claude Sonnet 4 1x 5. GPT-5.1 1x 6. GPT-5.1-Codex-Mini 0.33x 7. GPT-5.1-Codex 1x 8. GPT-5 1x 9. GPT-5-Mini 0x 10. GPT-4.1 0x 11. Gemini 3 Pro Preview 1x 12. …

Jan 21, 2026 · Jacklyn Carroll