Outage in Anthropic

Degraded outputs quality from Haiku 4.5

Resolved Minor
November 04, 2025 - Started 1 day ago - Lasted about 20 hours
Official incident page

Incident Report

We observed a small fraction of outputs were degraded from Haiku 4.5 since 3pm on Nov 3 PST. Fix has been deployed on 10:45am on Nov 4 PST. Incident is mitigated. We are currently monitoring.

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Latest Updates ( sorted recent to last )
RESOLVED about 7 hours ago - at 11/05/2025 05:41PM

This incident has been resolved.

MONITORING 1 day ago - at 11/04/2025 10:09PM

We observed a small fraction of outputs were degraded from Haiku 4.5 since 3pm on Nov 3 PST. Fix has been deployed on 10:45am on Nov 4 PST. Incident is mitigated. We are currently monitoring.

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