GitHub Enterprise Cloud US incident

[Backfill] US - Incident with Copilot

Minor Resolved View vendor source →

GitHub Enterprise Cloud US experienced a minor incident on January 6, 2026 affecting prod-cus-01 - Copilot (Copilot), lasting 1h 12m. The incident has been resolved; the full update timeline is below.

Started
Jan 06, 2026, 08:56 AM UTC
Resolved
Jan 06, 2026, 10:08 AM UTC
Duration
1h 12m
Detected by Pingoru
Jan 06, 2026, 08:56 AM UTC

Affected components

prod-cus-01 - Copilot (Copilot)

Update timeline

  1. investigating Jan 06, 2026, 08:56 AM UTC

    We are investigating reports of degraded performance for Copilot

  2. investigating Jan 06, 2026, 09:03 AM UTC

    We are experiencing degraded availability for the GPT-5.1-Codex-Max model in Copilot Chat, VS Code and other Copilot products. This is due to an issue with an upstream model provider. We are working with them to resolve the issue. Other models are available and working as expected.

  3. investigating Jan 06, 2026, 10:07 AM UTC

    The issues with our upstream model provider have been resolved, and GPT-5.1-Codex-Max is once again available. We will continue monitoring to ensure stability.

  4. resolved Jan 06, 2026, 10:08 AM UTC

    This incident has been resolved. Thank you for your patience and understanding as we addressed this issue. A detailed root cause analysis will be shared as soon as it is available.