GitHub Copilot: Gemini Models Expanded to CLI, Cloud Agent, and App
GitHub CopilotGitHub has expanded Gemini model availability within Copilot to cover the CLI, cloud agent, and the new Copilot desktop app. Gemini 3.1 Pro (Preview) is now accessible to Copilot Student, Pro, Pro+, Business, and Enterprise subscribers across these surfaces, while Gemini 3.5 Flash, already available in Copilot Chat, is now also available in the CLI, cloud agent, and app for Pro and above. The expansion also extends both models to the Copilot SDK, enabling builders to use Gemini models in custom agent apps. Enterprise and Business administrators must enable the relevant Gemini model policy in Copilot settings before the models appear for their teams.
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Gemini Models Now Available in Copilot CLI, Cloud Agent, and the Copilot App
GitHub extended the reach of its Gemini model integration on June 2, 2026, bringing two Google models, Gemini 3.1 Pro (Preview) and Gemini 3.5 Flash, to three new Copilot surfaces: the Copilot CLI, the cloud agent, and the GitHub Copilot desktop app (technical preview).
Which Models Are Available Where
Gemini 3.1 Pro (Preview) is the more capable of the two and is now available to the widest plan range:
- Copilot Student, Pro, Pro+, Business, and Enterprise
- Surfaces: Copilot CLI, cloud agent, GitHub Copilot app, and Copilot SDK
Gemini 3.5 Flash, already generally available in Copilot Chat since May 2026, is now extended to:
- Copilot Pro, Pro+, Business, and Enterprise (Copilot Student excluded)
- Surfaces: Copilot CLI, cloud agent, GitHub Copilot app, and Copilot SDK
Why This Matters for Agentic Workflows
The CLI, cloud agent, and Copilot app are the three most computation-intensive surfaces in Copilot's ecosystem: they handle multi-step agentic sessions, extended planning loops, and parallel task execution. Adding Gemini models to these surfaces means developers can now choose Google models specifically in the contexts where model selection has the largest impact on output quality and cost.
Gemini 3.5 Flash's strong tool use and fast response times, previously highlighted at its general availability in May, make it particularly suited to agentic workflows where the agent needs to invoke tools repeatedly in tight loops.
SDK Availability
Both models are also available via the Copilot SDK, meaning teams building custom agent apps can select Gemini 3.1 Pro or Gemini 3.5 Flash as the underlying model for their applications. This is relevant for the new agent app ecosystem GitHub launched at the same Build 2026 event.
Availability
Business and Enterprise organizations must opt in by enabling the relevant Gemini model policy in Copilot settings before the models are accessible to their teams. No additional cost beyond the standard model multiplier applies.