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Anthropic · AIJul 27, 2026, 13:39 UTC 3 months ago

Elevated errors on Claude Opus 5 and Haiku 4.5

MinorNot disclosedUpdated 47d ago
Jul 27, 13:39 UTCJul 27, 14:36 UTC
Duration
57m
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

As of 7:34 PST / 14:34 UTC the errors have returned to baseline.

Timeline

  1. Resolved · Jul 27, 14:36 UTC
    As of 7:34 PST / 14:34 UTC the errors have returned to baseline.
  2. Investigating · Jul 27, 14:04 UTC
    Haiku 4.5 is also returning errors.
  3. Investigating · Jul 27, 13:42 UTC
    We are currently investigating this issue.
  4. Investigating · Jul 27, 13:41 UTC
    We are continuing to investigate this issue.
  5. Investigating · Jul 27, 13:39 UTC
    We are currently investigating this issue.

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