GitHub Copilot retires four models in one sweep

GitHub deprecated four models in GitHub Copilot, effective October 2, 2026, each with a named replacement:

• Gemini 3.5 Flash and Gemini 3.6 Flash, both pointing to Gemini 3.8 Flash
• Kimi K2.7 Code, pointing to Kimi K3
• Claude Opus 4.7, pointing to Claude Opus 5.5

The deprecation applies across every Copilot surface: Chat, inline edits, ask mode, agent mode and code completions. No action is required to remove the deprecated models, but enterprise admins may need to explicitly enable the replacements through model policies in Copilot settings before they appear in the VS Code and github.com model selectors.

If you are affected, the Opus 4.7 retirement is the one to note. It lands roughly six weeks after Claude Opus 5.5 arrived in Copilot, and about four days after GPT-6.1 Sol, so the pattern is Google consolidating its own Flash line behind 3.8 while Anthropic’s older Opus tier is retired in favor of 5.5.

GitHub publishes no end-of-life date for the deprecated models beyond the Oct 2 effective date, so “deprecated” is not stated to mean unavailable that day, and there is no stated migration deadline. No migration path is mentioned for free or individual plans.

(Original source: GitHub)