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Copilot · Gemini 3.8 Flash in; four models out 2 Oct

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Gemini 3.8 Flash in the model picker across VS Code, VS, CLI, cloud agent, app, JetBrains, Xcode, Eclipse — intro usage-based pricing through 31 Dec 2026. Deprecates 2 Oct: Gemini 3.5/3.6 Flash → 3.8 Flash; Kimi K2.7 Code → Kimi K3; Claude Opus 4.7 → Opus 5. Admins enable replacements via model policy.34

Relevant to: Copilot Pro through Enterprise pinning Gemini Flash, Kimi, or Opus 4.7

What the verdict meansWill break existing code: deprecation or API change.

Sources

  1. GitHub Changelog — Gemini 3.8 Flash in Copilot · read
  2. GitHub Changelog — Copilot model deprecations 2 Oct · read
Originally part of the 4 September 2026 edition.

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