GitHub Copilot、2026年9月に複数モデルのサポート終了を発表

We will deprecate the following models across all GitHub Copilot experiences (including Copilot Chat, inline edits, ask and agent modes, and code completions), on September 1st, 2026:

Model

Deprecation date

Suggested alternative

Gemini 3.1 Pro

9-1-2026

Gemini 3.6 Flash

Claude Opus 4.5

9-1-2026

Claude Opus 4.7, Claude Opus 4.8, or Claude Opus 5

Claude Opus 4.6

9-1-2026

Claude Opus 4.7, Claude Opus 4.8, or Claude Opus 5

Claude Sonnet 4.5

9-1-2026

Claude Sonnet 5

Claude Sonnet 4.6*

9-1-2026

Claude Sonnet 5

Raptor Mini

9-1-2026

MAI-Code-1-Flash

Claude Sonnet 4.6 will remain available to individual GitHub Copilot subscribers on annual plans so they retain a Sonnet offering. The deprecation of Claude Sonnet 4.6 does not apply to these customers.

Please update your workflows and integrations to use the supported model before these dates. Copilot Enterprise administrators may need to enable access to the alternative model through their model policies in Copilot settings. As an administrator, you can verify availability by checking your individual Copilot settings and confirming that the policy is enabled for the specific model. Once enabled, you’ll see the model in the Copilot Chat model selector in VS Code and on github.com. No action is required to remove the models once they have been deprecated.

GitHub Enterprise customers with questions or concerns are encouraged to reach out to their account manager for further assistance.

Share your feedback

To learn more about the models available in Copilot, see our documentation on models and get started with Copilot today.

Join the GitHub Community to share your feedback.

The post Upcoming August 2026 model deprecations in GitHub Copilot appeared first on The GitHub Blog.