Anthropic incident

Degraded performance for Claude Fable 5

Minor Vendor's status page →

Resolved after 40 minutes, affecting claude.ai and Claude API (api.anthropic.com) and 1 more, on October 21, 2026.

investigating Oct 21, 2026, 07:49 PM UTC

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

Started
Oct 21, 2026, 07:49 PM UTC
Resolved
Oct 21, 2026, 08:29 PM UTC
Duration
40m
Detected by Pingoru
Oct 21, 2026, 07:49 PM UTC

Affected components

claude.aiClaude API (api.anthropic.com)Claude CodeClaude Cowork

Update timeline

  1. investigating Oct 21, 2026, 07:49 PM UTC

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

  2. resolved Oct 21, 2026, 08:29 PM UTC

    The issue affecting other Claude models has been resolved.

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