Claude Opus 4 is experiencing degraded performance

Incident Report for GitHub

Resolved

On September 24th, 2025, between 08:02 UTC and 09:11 UTC the Copilot service was degraded for Claude Opus 4 and Claude Opus 4.1 requests. On average, 22% of requests failed for Claude Opus 4 and 80% of requests for Claude Opus 4.1. This was due to an upstream provider returning elevated errors on Claude Opus 4 and Opus 4.1.

We mitigated the issue by directing users to select other models and by monitoring recovery. To resolve the issue, we are expanding failover capabilities by integrating with additional infrastructure providers.

Posted Sep 24, 2025 - 09:18 UTC

Update

Between around 8:16 UTC and 8:51 UTC we saw elevated errors on Claude Opus 4 and Opus 4.1, up to 49% of requests were failing. This has recovered to around 4% of requests failing, we are monitoring recovery.

Posted Sep 24, 2025 - 09:16 UTC

Investigating

We are currently investigating this issue.

Posted Sep 24, 2025 - 09:08 UTC