Elevated error rates with Sonnet 4.5 and Opus 4.1

Incident Report for Claude

Resolved

This incident has been resolved.
Posted Nov 14, 2025 - 00:40 UTC

Monitoring

A fix has been implemented and we are monitoring the results.
Posted Nov 14, 2025 - 00:27 UTC

Investigating

We are currently investigating this issue.
Posted Nov 14, 2025 - 00:15 UTC
This incident affected: claude.ai, Claude API (api.anthropic.com), and Claude Code.