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Anthropic · AINov 8, 2026, 08:28 UTC yesterday

Degraded performance for Claude Fable 5.1

MinorNot disclosedUpdated 30h ago
Nov 8, 08:28 UTCNov 8, 08:54 UTC
Duration
26m
Impact
Minor
Root cause
Not disclosed
Anthropic, 90 days
49 incidents
Affected
claude.aiClaude API (api.anthropic.com)Claude CodeClaude Cowork
Status page

Final update

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.

Timeline

  1. Resolved · Nov 8, 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.
  2. Monitoring · Nov 8, 08:39 UTC
    A fix has been deployed for Claude Fable 5.1 and we are monitoring for recovery.
  3. Investigating · Nov 8, 08:28 UTC
    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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