Outage in Anthropic

Elevated errors on Claude 4 Sonnet

Resolved Minor
August 04, 2025 - Started about 9 hours ago - Lasted about 4 hours
Official incident page

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Outage Details

This is a repeat of the previous incident. We've seen an increase in errors on Claude 4 Sonnet.
Components affected
Anthropic claude.ai Anthropic console.anthropic.com Anthropic api.anthropic.com
Latest Updates ( sorted recent to last )
RESOLVED about 6 hours ago - at 08/04/2025 06:43PM

As of 18:30 UTC, we have mitigated the incident.

INVESTIGATING about 9 hours ago - at 08/04/2025 03:23PM

We are seeing an increase of errors on Claude 3.7 Sonnet as of 08:18 PT / 15:18 UTC, together with a decrease of errors on Claude 4 Sonnet.

INVESTIGATING about 9 hours ago - at 08/04/2025 03:12PM

This is a repeat of the previous incident. We've seen an increase in errors on Claude 4 Sonnet.

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