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Degraded performance for Claude Fable 5

Posted today 19:49 UTC, last seen today 21:18 UTC.

Unknown Duration: the provider stated no start
2Updates posted
4Other incidents at the same time

What it affected

As the provider names it

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

What the provider posted

Newest first
  1. today 20:29 UTCResolvedThe issue affecting other Claude models has been resolved.
  2. today 19:49 UTCInvestigatingWe are investigating elevated errors on requests to Claude Fable 5. We will provide an update as soon as possible.

Around it

From the sources ChangeIntel reads; a match in time is not a cause

What changed

First observed 21 Oct 2026
  1. 21 Oct 2026 Servicesclaude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
  2. 21 Oct 2026 StageInvestigating → Resolved
  3. 21 Oct 2026 Observed stateOngoing → Ended
  4. 21 Oct 2026 SummaryWe are investigating elevated errors on requests to Claude Fable 5. We will provide an update as soon as possible. → The issue affecting other Claude models has been resolved.

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Sources read 21 Oct 20:45 UTC · 259 of 260 readable · 257 fully read · documentation 416/439 current