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Outage in Claude

Sonnet 4.6 elevated rate of errors

Resolved Major
April 08, 2026 - Started about 15 hours ago - Lasted about 3 hours
Official incident page

Incident Report

Summary AI Generated

Claude's Sonnet 4.6 model experienced elevated error rates for 3.2 hours, causing widespread service disruptions across claude.ai, the API, and console. Users reported unresponsive prompts, repeated "taking longer than usual" messages, 529 overloaded errors, and complete inability to access chats or use Claude's code features. The issue was identified and resolved with a fix implementation, restoring normal service functionality.

We are currently investigating this issue.
Components affected
Claude claude.ai Claude api.anthropic.com Claude console.anthropic.com
Latest Updates ( sorted recent to last )
RESOLVED about 11 hours ago - at 04/08/2026 09:33AM

The incident is now resolved. Sonnet 4.6 exhibited errors above baseline between 23:00 PT / 7:00 UTC and 1:50 PT / 9:50 UTC.

MONITORING about 12 hours ago - at 04/08/2026 09:01AM

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

IDENTIFIED about 13 hours ago - at 04/08/2026 07:59AM

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

INVESTIGATING about 14 hours ago - at 04/08/2026 07:06AM

We are continuing to investigate this issue.

INVESTIGATING about 15 hours ago - at 04/08/2026 06:23AM

We are currently investigating this issue.

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