Copilot News 08/31/2026 AI Rating: Medium

GitHub Copilot Deprecates Gemini 3.1 Pro, Claude Opus/Sonnet 4.5/4.6, and Raptor Mini

#GitHubCopilot#GitHub#ModelDeprecation#Claude#Gemini

GitHub deprecated a batch of older models from GitHub Copilot effective September 1, 2026, removing them from Copilot Chat, inline edits, ask and agent modes, and code completions.

Details

  • Deprecated models: Gemini 3.1 Pro; Claude Opus 4.5 and 4.6; Claude Sonnet 4.5 and 4.6; and Raptor Mini
  • Recommended replacements: Gemini 3.1 Pro users should move to Gemini 3.7 Flash; Claude Opus 4.5/4.6 users to Claude Opus 4.7, 4.8, or 5; Claude Sonnet 4.5/4.6 users to Claude Sonnet 5; and Raptor Mini users to MAI-Code-1.1-Flash
  • Admin action needed: enterprise administrators must enable access to the alternative models through their organization’s model policies in Copilot settings and confirm they appear in the model selector
  • No manual cleanup required: the deprecated models are removed automatically; no action is needed to take them away from end users

What happened next

The deprecation continues GitHub’s routine model-lifecycle management as newer versions from Anthropic and Google supersede older ones, timed the day after Claude Fable 5.1 reached general availability in Copilot — reinforcing that GitHub expects users to migrate to current-generation models rather than staying on now-superseded releases.

Source https://github.blog/changelog/2026-08-31-selected-github-copilot-models-deprecated

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