# Anthropic: Elevated errors for Claude Sonnet 5.5

- Provider: [Anthropic](https://outages.cc/anthropic.md)
- Type: Incident
- State: Resolved
- Worst impact: Partial outage
- Started: 2026-10-27 15:09 UTC
- Resolved: 2026-10-27 15:50 UTC (lasted 41 min)
- Components: claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
- Official update: https://stspg.io/39x7qh3sd7bd

## Updates from Anthropic

### resolved, 2026-10-27 15:50 UTC

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.

### identified, 2026-10-27 15:09 UTC

We are investigating elevated errors on requests to Claude Sonnet 5.5. We will provide an update as soon as possible.