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Policy · news · Single-source brief

MAI-Code-1-Flash Deprecated Across GitHub Copilot Experiences

GitHub has deprecated the MAI-Code-1-Flash model across all GitHub Copilot experiences as of September 10, 2026, requiring users to update their workflows to a supported alternative.

By Illumora Editorial

Source · Sep 10, 2026, 4:54 PM · On Illumora · Sep 10, 2026, 5:07 PM

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Read the source →GitHub Changelog (Copilot) — MAI-Code-1-Flash deprecated - GitHub Changelog
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GitHub has deprecated the MAI-Code-1-Flash model across all GitHub Copilot experiences, including Copilot Chat, inline edits, ask and agent modes, and code completions. This change took effect on September 10, 2026.

Key Points

  • The MAI-Code-1-Flash model is deprecated across all GitHub Copilot experiences.
  • This deprecation includes Copilot Chat, inline edits, ask and agent modes, and code completions.
  • The deprecation date was September 10, 2026.
  • Users are advised to update their workflows and integrations to use a supported model.
  • Copilot Enterprise administrators may need to enable access to alternative models via model policies in Copilot settings.
  • Administrators can verify availability by checking individual Copilot settings and confirming policy enablement.
  • No action is required to remove the deprecated model.

Context

According to the GitHub Changelog, the deprecation of MAI-Code-1-Flash impacts all facets of GitHub Copilot. GitHub Enterprise customers with questions or concerns are directed to contact their account manager for assistance.

Why It Matters

This deprecation requires developers and administrators using GitHub Copilot to adjust their configurations and workflows to ensure continued functionality. Administrators, in particular, must manage model policies to provide access to alternative models for their teams.

What To Do

  • Update workflows and integrations to use a supported model.
  • Copilot Enterprise administrators should check their model policies in Copilot settings.
  • Administrators should enable access to alternative models as needed.
  • Verify the availability of new models in the Copilot Chat model selector in VS Code and on github.com.
  • Consult GitHub's documentation on models to learn more about available alternatives.