Google's Gemini 3.5 Flash model is now generally available on GitHub Copilot. It offers near-Pro coding quality at Flash-tier speed and cost, with strong tool use, fast response times, and high cache efficiency suited for agentic coding workflows. The model is available to Copilot Pro, Pro+, Business, and Enterprise users across VS Code (1.115.0+), Visual Studio, GitHub Mobile, JetBrains, Xcode, and Eclipse. It launches with a 14X premium request multiplier, though pricing is tentative. Enterprise and Business admins must enable the model via Copilot settings.

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