Anthropic incident

Elevated errors on Claude Opus 4.5

Minor Resolved View vendor source →

Anthropic experienced a minor incident on May 4, 2026 affecting claude.ai and Claude API (api.anthropic.com) and 1 more component, lasting 1h 39m. The incident has been resolved; the full update timeline is below.

Started
May 04, 2026, 08:09 AM UTC
Resolved
May 04, 2026, 09:49 AM UTC
Duration
1h 39m
Detected by Pingoru
May 04, 2026, 08:09 AM UTC

Affected components

claude.aiClaude API (api.anthropic.com)Claude Code

Update timeline

  1. investigating May 04, 2026, 08:09 AM UTC

    We are currently investigating this issue.

  2. investigating May 04, 2026, 08:09 AM UTC

    We are continuing to investigate this issue.

  3. identified May 04, 2026, 08:19 AM UTC

    The issue has been identified and a fix is being implemented.

  4. identified May 04, 2026, 09:14 AM UTC

    We are continuing to work on a fix for this issue.

  5. monitoring May 04, 2026, 09:23 AM UTC

    A fix has been implemented and we are monitoring the results.

  6. resolved May 04, 2026, 09:49 AM UTC

    This incident has been resolved.