Anthropic incident

Elevated errors on Claude Opus 5 and Haiku 4.5

Minor Vendor's status page →

Resolved after 56 minutes, affecting claude.ai and Claude API (api.anthropic.com) and 1 more, on July 27, 2026.

investigating Jul 27, 2026, 02:04 PM UTC

Haiku 4.5 is also returning errors.

Started
Jul 27, 2026, 01:39 PM UTC
Resolved
Jul 27, 2026, 02:36 PM UTC
Duration
56m
Detected by Pingoru
Jul 27, 2026, 01:39 PM UTC

Affected components

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

Update timeline

  1. investigating Jul 27, 2026, 01:39 PM UTC

    We are currently investigating this issue.

  2. investigating Jul 27, 2026, 01:41 PM UTC

    We are continuing to investigate this issue.

  3. investigating Jul 27, 2026, 01:42 PM UTC

    We are currently investigating this issue.

  4. investigating Jul 27, 2026, 02:04 PM UTC

    Haiku 4.5 is also returning errors.

  5. resolved Jul 27, 2026, 02:36 PM UTC

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

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