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Claude (Anthropic) · 31d ago

Elevated errors on Claude Opus 5 and Haiku 4.5

Resolved

Timeline

Started: Jul 27, 2026, 1:39 PM UTC

Last update: Aug 14, 2026, 10:28 AM UTC

Resolved: Jul 27, 2026, 2:36 PM UTC

Affected: rwppv331jlwc, k8w3r06qmzrp, yyzkbfz2thpt, bpp5gb3hpjcl

Claude (Anthropic)'s official report →

Updates

  • resolved

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

    Jul 27, 2026, 2:36 PM UTC

  • investigating

    Haiku 4.5 is also returning errors.

    Jul 27, 2026, 2:04 PM UTC

  • investigating

    We are currently investigating this issue.

    Jul 27, 2026, 1:42 PM UTC

  • investigating

    We are continuing to investigate this issue.

    Jul 27, 2026, 1:41 PM UTC

  • investigating

    We are currently investigating this issue.

    Jul 27, 2026, 1:39 PM UTC

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