# Anthropic: Elevated errors for Claude Sonnet 5.5 and other models

- Provider: [Anthropic](https://outages.cc/anthropic.md)
- Type: Incident
- State: Resolved
- Worst impact: Partial outage
- Started: 2026-10-25 06:14 UTC
- Resolved: 2026-10-25 07:53 UTC (lasted 1 h 39 min)
- Components: claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
- Official update: https://stspg.io/s3wd6gmdsdhn

## Updates from Anthropic

### resolved, 2026-10-25 07:53 UTC

The issue affecting Claude services has been resolved. Impact occurred from 23:05 PT on October 24 / 06:05 UTC on October 25 to 23:35 PT on October 24 / 06:35 UTC on October 25.

### monitoring, 2026-10-25 06:35 UTC

A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.

### identified, 2026-10-25 06:27 UTC

We have identified the cause of elevated errors on requests to Claude Sonnet 5.5 and are working on a fix. We will provide an update as soon as possible.

### investigating, 2026-10-25 06:14 UTC

We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5. We will provide an update as soon as possible.