Anthropic incident

Elevated errors for Claude Opus 5.5

Major Resolved View vendor source →

Anthropic experienced a major incident on October 6, 2026 affecting claude.ai and Claude API (api.anthropic.com) and 1 more component, lasting 18m. The incident has been resolved; the full update timeline is below.

Started
Oct 06, 2026, 12:24 PM UTC
Resolved
Oct 06, 2026, 12:43 PM UTC
Duration
18m
Detected by Pingoru
Oct 06, 2026, 12:24 PM UTC

Affected components

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

Update timeline

  1. investigating Oct 06, 2026, 12:24 PM UTC

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

  2. identified Oct 06, 2026, 12:37 PM UTC

    We have identified the cause of elevated errors on requests to Claude Opus 5.5 and are working on a fix. We will provide an update as soon as possible.

  3. resolved Oct 06, 2026, 12:43 PM UTC

    The issue affecting Claude Opus 5.5 has been resolved.