# Elevated errors for Claude Sonnet 5.5

- Provider: [Anthropic](https://down.guide/providers/anthropic)
- Confidence: Confirmed
- Impact: Partial outage
- lasted 41m
- started 2026-10-27 15:09 UTC
- claude.ai, Claude API (api.anthropic.com), Claude Code +1
- Anthropic states the impact was 2026-10-26 21:42 UTC to 2026-10-27 15:17 UTC (17h 35m)
- id: DWN-3eb522fd21
- Official page: https://stspg.io/39x7qh3sd7bd

## Updates from Anthropic
### 2026-10-27 15:09 UTC: identified
We are investigating elevated errors on requests to Claude Sonnet 5.5. We will provide an update as soon as possible.

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