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Partial OutageResolvedOfficial report

Sonnet 4.6 and Opus 4.6 elevated error rate

Started

Saturday, April 4, 2026

05:30 PM UTC

Duration

0 min

total

Resolved

05:30 PM UTC

Saturday, April 4, 2026

Incident update

Between 10:09 and 10:31 PDT, Sonnet 4.6 and Opus 4.6 experienced elevated error rates across most product surfaces.

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