Anthropic incident
Elevated errors for Claude Sonnet 5.5
Started
October 27, 2026 at 03:09 PM UTC
Duration
41 min
Resolved
October 27, 2026 at 03:50 PM UTC
Updates timeline
- Identified
We are investigating elevated errors on requests to Claude Sonnet 5.5. We will provide an update as soon as possible.
- Resolved
The issue affecting claude.ai, the Claude API, Claude Code, and Claude Cowork has been resolved. Impact occurred from 07:42 PT / 14:42 UTC to 08:17 PT / 15:17 UTC.
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