Update: Copilot's six-model retirement takes effect tomorrow
Last day for Gemini 3.1 Pro, two Opus and two Sonnet builds, and Raptor Mini in Copilot: from Sept 1 they're gone. Repin now; annual solo plans keep Sonnet 4.6.
Copy markdown
The six models sunsetting
GitHub Copilot removes Gemini 3.1 Pro, Claude Opus 4.5 and 4.6, Claude Sonnet 4.5 and 4.6, and Raptor Mini on September 1. GitHub's suggested swaps: Gemini 3.6 Flash, Opus 4.7, 4.8 or 5, Sonnet 5, and MAI-Code-1-Flash.
Only annual solo plans keep Sonnet 4.6
Individual subscribers on annual Copilot plans keep Claude Sonnet 4.6 so they still have a Sonnet option; everyone else on it moves to Sonnet 5. If you depend on 4.6's exact behavior, the annual plan is the one place it survives past tomorrow.
Enterprise admins have to flip the replacements on
The newer models aren't enabled automatically — Copilot Enterprise admins may need to allow each alternative in their model policies. If they don't before Sept 1, a team can lose a retired model with no successor turned on.
What to check today
Audit anything that pins a model ID — editor settings, agent configs, CI or scripts calling the Copilot API — for Opus 4.5/4.6, Sonnet 4.5/4.6, Gemini 3.1 Pro, or Raptor Mini, and repoint it before the cutoff to avoid forced fallbacks.