GitHub Will Deprecate Four Copilot Models on October 2 - Claude Opus 4.7 Points to Opus 5

In a changelog entry dated September 3, 2026, GitHub announced that it will deprecate four models in GitHub Copilot on October 2, 2026¹.

• Models and suggested alternatives: Gemini 3.5 Flash → Gemini 3.8 Flash, Gemini 3.6 Flash → Gemini 3.8 Flash, Kimi K2.7 Code → Kimi K3, Claude Opus 4.7 → Claude Opus 5. The deprecation date for all four is 2026-10-02¹
• Scope: all GitHub Copilot experiences, including Copilot Chat, inline edits, ask and agent modes, and code completions¹
• Administrator work: workflows and integrations should be updated to supported models before that date, and Copilot Enterprise and Copilot Business administrators may need to enable access to the alternative models through their model policies in Copilot settings¹

The mapping is presented as a “suggested alternative,” and nothing in the entry says the switch happens automatically. Administrators are told to verify availability in their organization or enterprise Copilot model settings and confirm the policy is enabled for the specific model¹. No action is required to remove the models after they have been deprecated¹. GitHub made its global model policy generally available in late August and, in September, allowed enterprise managed settings to specify the default model — a continuing run of changes putting the choice of who uses which model in the organization’s hands. Teams that have pinned a specific model will need to check their policy settings before October 2.

Sources

1. Upcoming deprecation of selected GitHub Copilot models - GitHub official changelog (September 3, 2026)