GitHub Enterprise Cloud EU incident

EU - Copilot's GPT-5.1 model has degraded performance

Minor Resolved View vendor source →

GitHub Enterprise Cloud EU experienced a minor incident on January 14, 2026 affecting Copilot, lasting 1h 27m. The incident has been resolved; the full update timeline is below.

Started
Jan 14, 2026, 09:24 AM UTC
Resolved
Jan 14, 2026, 10:52 AM UTC
Duration
1h 27m
Detected by Pingoru
Jan 14, 2026, 09:24 AM UTC

Affected components

Copilot

Update timeline

  1. investigating Jan 14, 2026, 09:24 AM UTC

    We are investigating reports of degraded performance for Copilot

  2. investigating Jan 14, 2026, 09:26 AM UTC

    Copilot is experiencing degraded performance when using the GPT-5.1 model. We are investigating the issue.

  3. investigating Jan 14, 2026, 09:53 AM UTC

    We are continuing to investigate issues with the GPT-5.1 model with our model provider. Uses of other models are not impacted.

  4. investigating Jan 14, 2026, 10:32 AM UTC

    We are continuing to investigate issues with the GPT-5.1 model. We are also seeing an increase in failures for Copilot Code Reviews.

  5. resolved Jan 14, 2026, 10:52 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.