Anthropic incident

Elevated errors for Claude Sonnet 5.5

Resolved after 42 minutes, affecting claude.ai and Claude API (api.anthropic.com) and 1 more, on October 27, 2026.

monitoring Oct 27, 2026, 09:38 AM UTC

A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.

Started
Oct 27, 2026, 09:14 AM UTC
Resolved
Oct 27, 2026, 09:56 AM UTC
Duration
42m
Detected by Pingoru
Oct 27, 2026, 09:14 AM UTC

Affected components

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

Update timeline

  1. investigating Oct 27, 2026, 09:14 AM UTC

    We are investigating elevated errors on requests to Claude Sonnet 5.5. We will provide an update as soon as possible.

  2. monitoring Oct 27, 2026, 09:38 AM UTC

    A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.

  3. resolved Oct 27, 2026, 09:56 AM UTC

    The issue affecting Claude services has been resolved.

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