GPT-4.1 Deprecated in GitHub Copilot — Migrate to GPT-5.5
GPT-4.1 is now deprecated across GitHub Copilot. Migrate to GPT-5.5. Enterprise admins need to enable the new model in settings; no action required to remove the old one.
TL;DR
- GPT-4.1 is deprecated across all Copilot experiences as of June 1, 2026
- Migrate to GPT-5.5 as the recommended alternative
- Enterprise admins must enable GPT-5.5 in model policies; no action needed to remove GPT-4.1
Deprecated
- GPT-4.1 — removed from Copilot Chat, inline edits, ask mode, agent mode, and code completions
What You Need to Do
- Update workflows and integrations to use GPT-5.5 instead of GPT-4.1
- Enterprise admins: enable GPT-5.5 access through Copilot settings model policies
- Verify the model appears in the Copilot Chat model selector in VS Code and github.com once enabled
- GitHub Enterprise customers with concerns should contact their account manager
For details on available models, see GitHub's model documentation.
Source: GitHub Changelog
