GPT-4.1 Deprecated in GitHub Copilot – Migrate to GPT-5.5
GPT-4.1 is deprecated in GitHub Copilot as of June 1, 2026. Migrate to GPT-5.5 now. Enterprise admins must enable the new model in settings before the deadline.
TL;DR
- GPT-4.1 sunsets June 1, 2026 across all Copilot experiences
- Migrate to GPT-5.5 as the recommended alternative
- Enterprise admins must enable GPT-5.5 in model policies before the deadline
New
- GPT-5.5 now available — The successor model is ready in Copilot Chat, inline edits, ask mode, agents, and code completions
Deprecations
- GPT-4.1 sunset — Removed from all Copilot experiences on June 1, 2026. Update workflows and integrations now
What You Need to Do
- Update any hardcoded model references from GPT-4.1 to GPT-5.5 in your integrations and scripts
- Copilot Enterprise admins: Enable GPT-5.5 access through model policies in Copilot settings. Verify it appears in the model selector in VS Code and github.com
- No action needed to remove deprecated models after the cutoff — Copilot handles cleanup automatically
- Enterprise customers with concerns: Contact your account manager
For context on model transitions, see how GitHub handled the Claude Sonnet 4 deprecation. Check the official Copilot models documentation for the full list of supported alternatives.
Source: GitHub Changelog
