Outage in Anthropic
Degraded performance for Claude Fable 5.1
Resolved MinorIncident Report
Summary AI Generated
Claude Fable 5.1 experienced elevated error rates on November 8, 2026, affecting the Claude API, claude.ai, Claude Code, and Claude Cowork for approximately 14 minutes (08:18–08:32 UTC). A fix was deployed and the situation was monitored before being confirmed resolved. The incident was classified as minor with a total duration of 29 minutes from investigation to full resolution.
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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Latest Updates ( sorted recent to last )
RESOLVED
about 9 hours 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
about 9 hours ago - at 11/08/2026 08:39AM
A fix has been deployed for Claude Fable 5.1 and we are monitoring for recovery.
INVESTIGATING
about 9 hours 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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