GitHub Enterprise Cloud AU incident
[Backfill] AU - Copilot's GPT-5.1 model has degraded performance
Resolved after 1 hour 28 minutes, affecting prod-ae-01 - Copilot (Copilot), on January 14, 2026.
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.
Affected components
Update timeline
- investigating Jan 14, 2026, 09:24 AM UTC
We are investigating reports of degraded performance for Copilot
- 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.
- 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.
- 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.
- 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.
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