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Anthropic · AIApr 8, 2026, 06:23 UTC

Sonnet 4.6 elevated rate of errors

MajorNot disclosedUpdated 18h ago
Apr 8, 06:23 UTCApr 8, 09:33 UTC
Duration
3h 10m
Impact
Major
Root cause
Not disclosed
Anthropic, 90 days
94 incidents
Affected
Not listed by the vendor.
Status page

Final update

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.

Timeline

  1. Resolved · Apr 8, 09:33 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.

More from Anthropic

Full history

From vendors' own status pages and disclosures. Times as reported. Logos via logo.dev; trademarks belong to their owners.

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