Outage in Claude
Degraded performance for Claude Fable 5.1
Resolved MinorIncident Report
Summary AI Generated
**Claude Fable 5.1 Degraded Performance — November 8, 2026** Claude Fable 5.1 experienced elevated error rates affecting the Claude API, claude.ai, Claude Code, and Claude Cowork for approximately 28 minutes. A fix was deployed and the incident was fully resolved by 08:54 UTC with no further impact.
We are investigating elevated errors on requests to Claude Fable 5.1. We will provide an update as soon as possible.
Components affected
Claude api.anthropic.com Claude claude.aiLatest Updates ( sorted recent to last )
RESOLVED
4 days ago - at 11/08/2026 08:54AM
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
4 days ago - at 11/08/2026 08:39AM
A fix has been deployed for Claude Fable 5.1 and we are monitoring for recovery.
INVESTIGATING
4 days ago - at 11/08/2026 08:28AM
We are investigating elevated errors on requests to Claude Fable 5.1. We will provide an update as soon as possible.
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