Claude Opus 4.5 model experiencing degraded performance

Resolved

On January 14th, 2026, between approximately 10:20 and 11:25 UTC, the Copilot service experienced a degradation of the Claude Opus 4.5 model due to an issue with our upstream provider. During this time period, users encountered a 4.5% error rate when using Claude Opus 4.5. No other models were impacted.The issue was resolved by a mitigation put in place by our provider. GitHub is working with our provider to further improve the resiliency of the service to prevent similar incidents in the future.

Investigating

We are continuing to investigate issues with Claude Opus 4.5 and are working to restore performance across our model providers.

Investigating

We are experiencing issues with our Claude Opus 4.5 providers and are investigating remediation.

Investigating

We are investigating reports of impacted performance for some GitHub services.