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Outage in Anthropic

Degraded performance on Claude Sonnet 5

Resolved Minor
August 03, 2026 - Started about 20 hours ago - Lasted 19 minutes
Official incident page

Incident Report

Summary AI Generated

Claude Sonnet 5 experienced degraded performance affecting both claude.ai and api.anthropic.com for approximately 19 minutes on August 3, 2026. Anthropic investigated elevated error rates, which returned to baseline by 15:20 UTC. The incident was resolved with no further action required.

We are currently investigating this issue.

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Latest Updates ( sorted recent to last )
RESOLVED about 20 hours ago - at 08/03/2026 03:29PM

As of 15:20 UTC (8:20am PT), error rates on Claude Sonnet 5 have returned to baseline. This incident is resolved.

INVESTIGATING about 20 hours ago - at 08/03/2026 03:13PM

We are currently investigating this issue.

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