# Anthropic: Degraded performance for Claude Fable 5.1

> Claude Fable 5.1 had degraded performance. The issue affected claude.ai, the Claude API, Claude Code, and Claude Cowork. Anthropic reports that the incident is resolved.

- Provider: [Anthropic](https://outages.live/anthropic.md)
- Type: Incident
- State: Resolved
- Worst impact: Degraded performance
- Started: 2026-11-08 08:28 UTC
- Resolved: 2026-11-08 08:54 UTC (lasted 26 min)
- Components: claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
- Official update: https://stspg.io/3m3q1nwb142k

## Updates from Anthropic

### resolved, 2026-11-08 08:54 UTC

The issue affecting claude.ai, the Claude API, Claude Code, and Claude Cowork has been resolved. Impact occurred from 00:18 PT / 08:18 UTC on Nov 8 to 00:32 PT / 08:32 UTC on Nov 8.

### monitoring, 2026-11-08 08:39 UTC

A fix has been deployed for Claude Fable 5.1 and we are monitoring for recovery.

### investigating, 2026-11-08 08:30 UTC

We are investigating elevated errors on requests to Claude Fable 5.1. We will provide an update as soon as possible.