Increased errors on Claude Opus 4.1, fix underway. Users should be cautious.
Increased Errors on Claude Opus 4.1
Original: Elevated errors on Claude Opus 4.1
Importance: エラーの増加はユーザーに即影響を及ぼすため
Summary
On May 9, 2026, increased errors were identified on Claude Opus 4.1, and a fix is currently being implemented. Users may experience some impact, so caution is advised.
Key Points
- Increased errors confirmed on Claude Opus 4.1
- The issue has been identified and a fix is in progress
- User impact is a concern
View developer notes (APIs, breaking changes, migration)
On May 9, 2026, an increase in error rates was confirmed on Claude Opus 4.1. The issue has been identified, and a fix is currently in progress, potentially impacting user experience.
Source: https://status.claude.com/incidents/1m6xs1xcw9kk
Outlet: Anthropic Status
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