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Outage in Anthropic

Elevated error rates for Opus 4.5

Resolved Minor
July 20, 2026 - Started 2 days ago - Lasted about 6 hours
Official incident page

Incident Report

Summary AI Generated

Anthropic experienced elevated error rates affecting the Claude Opus 4.5 model across its API and console for approximately 5.8 hours on July 20, 2026. The issue was identified and a fix was implemented, with the incident fully resolved after a monitoring period.

We are currently investigating this issue.

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Latest Updates ( sorted recent to last )
RESOLVED 2 days ago - at 07/20/2026 12:48PM

This incident has been resolved.

MONITORING 2 days ago - at 07/20/2026 10:57AM

A fix has been implemented and we are monitoring the results.

IDENTIFIED 2 days ago - at 07/20/2026 10:05AM

We are continuing to work on a fix for this issue.

IDENTIFIED 2 days ago - at 07/20/2026 07:57AM

The issue has been identified and a fix is being implemented.

INVESTIGATING 2 days ago - at 07/20/2026 07:03AM

We are currently investigating this issue.

Latest Anthropic outages

Elevated errors on several models - about 16 hours ago
Elevated errors on Haiku 4.5 - about 19 hours ago
Elevated errors across Fable 5 - about 21 hours ago
Elevated errors across models - about 22 hours ago

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