Anthropic incident

Sonnet 4.6 elevated rate of errors

Major Resolved View vendor source →

Anthropic experienced a major incident on April 8, 2026 affecting claude.ai and Claude Console (platform.claude.com) and 1 more component, lasting 3h 10m. The incident has been resolved; the full update timeline is below.

Started
Apr 08, 2026, 06:23 AM UTC
Resolved
Apr 08, 2026, 09:33 AM UTC
Duration
3h 10m
Detected by Pingoru
Apr 08, 2026, 06:23 AM UTC

Affected components

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

Update timeline

  1. investigating Apr 08, 2026, 06:23 AM UTC

    We are currently investigating this issue.

  2. investigating Apr 08, 2026, 07:06 AM UTC

    We are continuing to investigate this issue.

  3. identified Apr 08, 2026, 07:59 AM UTC

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

  4. monitoring Apr 08, 2026, 09:01 AM UTC

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

  5. resolved Apr 08, 2026, 09:33 AM UTC

    The incident is now resolved. Sonnet 4.6 exhibited errors above baseline between 23:00 PT / 7:00 UTC and 1:50 PT / 9:50 UTC.