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All agents  /  Claude API  /  History  /  Oct 21, 2026

Claude API outage on Oct 21, 2026: degraded performance for Claude Fable 5

Resolved after 40 min.

19:49 UTC to 20:29 UTC your time. Anthropic: “Degraded performance for Claude Fable 5.” 0 reports here during the incident.

Claude APIUpRight now Claude API is up. See live status

Reports during the incident

Every 15 minutes, 18:45 UTC to 21:30 UTC. Grey: normal. Red line: official incident.
18:45 UTC19:49 UTC20:29 UTC21:30 UTC

What people reported

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Anthropic's updates

Quoted from status.claude.com

  1. 19:49 UTC

    Investigating

    We are investigating elevated errors on requests to Claude Fable 5. We will provide an update as soon as possible.

  2. 20:29 UTC

    Resolved

    The issue affecting other Claude models has been resolved.

Other Claude API incidents

Nov 826 minDegraded performance for Claude Fable 5.1Details
Oct 2741 minElevated errors for Claude Sonnet 5.5Details
Oct 2742 minElevated errors for Claude Sonnet 5.5Details
All Claude API incidents

Other agents

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