Anthropic incident

Elevated errors for Claude Sonnet 5

Major Resolved View vendor source →

Anthropic experienced a major incident on September 2, 2026 affecting claude.ai and Claude API (api.anthropic.com) and 1 more component, lasting 26m. The incident has been resolved; the full update timeline is below.

Started
Sep 02, 2026, 09:17 PM UTC
Resolved
Sep 02, 2026, 09:44 PM UTC
Duration
26m
Detected by Pingoru
Sep 02, 2026, 09:17 PM UTC

Affected components

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

Update timeline

  1. investigating Sep 02, 2026, 09:17 PM UTC

    We are investigating elevated errors on requests to Claude Sonnet 5. We will provide an update as soon as possible.

  2. resolved Sep 02, 2026, 09:44 PM UTC

    The issue affecting Claude Sonnet 5 has been resolved. Impact occurred from 2:05pm PT / 21:05 UTC to 2:19pm PT / 21:19 UTC.