Elevated errors on Claude 4.1 Opus

Incident Report for Anthropic

Resolved

As of 8:15 PT / 15:15 UTC the errors have returned to the baseline.
Posted Sep 04, 2025 - 15:30 UTC

Monitoring

A fix has been implemented and we are monitoring the results.
Posted Sep 04, 2025 - 15:20 UTC

Investigating

We are investigating an issue with Claude Opus 4.1 that started at 7:30 PT / 14:30 UTC.
Posted Sep 04, 2025 - 14:51 UTC
This incident affected: claude.ai, console.anthropic.com, api.anthropic.com, and Claude Code.