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Anthropic · AIOct 27, 2026, 09:14 UTC today

Elevated errors for Claude Sonnet 5.5

MajorNot disclosedUpdated 2h ago
Oct 27, 09:14 UTCOct 27, 09:56 UTC
Duration
42m
Impact
Major
Root cause
Not disclosed
Anthropic, 90 days
56 incidents
Affected
claude.aiClaude API (api.anthropic.com)Claude CodeClaude Cowork
Status page

Final update

The issue affecting Claude services has been resolved.

Timeline

  1. Resolved · Oct 27, 09:56 UTC
    The issue affecting Claude services has been resolved.
  2. Monitoring · Oct 27, 09:38 UTC
    A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.
  3. Investigating · Oct 27, 09:14 UTC
    We are investigating elevated errors on requests to Claude Sonnet 5.5. We will provide an update as soon as possible.

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