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All agents  /  Claude API  /  History  /  Nov 8, 2026

Claude API outage on Nov 8, 2026: degraded performance for Claude Fable 5.1

Resolved after 26 min.

08:28 UTC to 08:54 UTC your time. Anthropic: “Degraded performance for Claude Fable 5.1.” 0 reports here during the incident.

Claude APIUpRight now Claude API is up. See live status

Reports during the incident

Every 15 minutes, 07:15 UTC to 10:00 UTC. Grey: normal. Red line: official incident.
07:15 UTC08:28 UTC08:54 UTC10:00 UTC

What people reported

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Anthropic's updates

Quoted from status.claude.com

  1. 08:28 UTC

    Investigating

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

  2. 08:39 UTC

    Monitoring

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

  3. 08:54 UTC

    Resolved

    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.

Other Claude API incidents

Oct 2741 minElevated errors for Claude Sonnet 5.5Details
Oct 2742 minElevated errors for Claude Sonnet 5.5Details
Oct 2532 minElevated errors for Claude Fable 5.1Details
All Claude API incidents

Other agents

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