GitHub Copilot to Deprecate Gemini 2.5 Pro and Gemini 3 Flash Models by July 31
GitHub has announced the upcoming deprecation of Gemini 2.5 Pro and Gemini 3 Flash models across all GitHub Copilot experiences. Organizations and developers using these models must transition to supported alternatives before the end-of-life date.
GitHub is scheduling the formal deprecation of Google's Gemini 2.5 Pro and Gemini 3 Flash models across the entire GitHub Copilot ecosystem. This transition impacts all primary Copilot interfaces, including Copilot Chat, inline code edits, ask and agent modes, as well as standard code completions. Engineering teams currently relying on these specific models for their development workflows will need to evaluate alternative models to prevent disruption.
Primary source
Open GitHub Changelog ↗This article summarizes the source. Check the original for full details and conditions.
Action Checklist
- Identify active development environments and Copilot configurations using Gemini 2.5 Pro or Gemini 3 Flash Check both organization-level policies and individual IDE configurations.
- Select alternative supported models available within GitHub Copilot settings Verify model compatibility with existing prompt templates and custom agents.
- Update organization-wide default model settings in the GitHub admin console Ensure the changes are pushed to all seats before the July 31st deadline.
- Monitor developer telemetry for any fallback errors or configuration anomalies post-migration Keep an eye on IDE logs if developers report disruption in completion or chat behavior.