Elevated errors on Claude Opus 4.5 and Sonnet 4.5

Timeline

Started: 2026-02-04T10:13:52.057Z

Updated: 2026-02-05T14:32:40.943Z

Resolved: 2026-02-04T11:11:13.000Z

Impact scope

Official sources

Provider: anthropic

Updates

• resolved

  The issue has been fully resolved. The timelines are: * 02:00 PT / 10:00 UTC to 02:35 PT / 10:35 UTC * 02:54 PT / 10:54 UTC to 03:01 PT / 11:01 UTC

  2026-02-04T11:11:13.214Z

• monitoring

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

  2026-02-04T11:05:08.638Z

• identified

  The issue has just reocurred.

  2026-02-04T10:59:18.759Z

• monitoring

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

  2026-02-04T10:40:51.741Z

• identified

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

  2026-02-04T10:37:30.872Z

• investigating

  Sonnet 4.5 is also throwing errors.

  2026-02-04T10:18:03.020Z

• investigating

  We are currently investigating this issue.

  2026-02-04T10:13:52.197Z