# Claude Sonnet 4.5 error spike

- Provider: [Anthropic](https://down.guide/anthropic)
- Level: confirmed
- Impact: Partial outage
- lasted 1h 11m
- started 2026-04-20 06:14 UTC
- claude.ai, Claude Console (platform.claude.com), Claude API (api.anthropic.com) +3
- id: DWN-958ca49619
- Official page: https://stspg.io/byfy9rrycd6l

## Updates from Anthropic
### 2026-04-20 06:14 UTC: investigating
We are currently investigating this issue.

### 2026-04-20 06:38 UTC: monitoring
A fix has been implemented and we are monitoring the results.

### 2026-04-20 06:41 UTC: monitoring
We are continuing to monitor for any further issues.

### 2026-04-20 07:25 UTC: resolved
This incident has been resolved.

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