Outage in Anthropic

Elevated errors on Claude Sonnet 4.6

Resolved Minor

March 12, 2026 - Started 1 day ago - Lasted about 3 hours
Official incident page

Incident Report

Summary AI Generated

Anthropic's Claude Sonnet 4.6 experienced elevated errors starting at 9:27 PT, affecting both claude.ai and api.anthropic.com services. This was a repeat of an earlier issue that occurred the same day. The incident was resolved after 3.3 hours of service disruption.

A repeat of an earlier issue today started at 9:27 PT / 16:27 UTC.

Components affected

Anthropic claude.ai Anthropic api.anthropic.com

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Latest Updates ( sorted recent to last )

RESOLVED 1 day ago - at 03/12/2026 07:48PM

This incident has been resolved.

IDENTIFIED 1 day ago - at 03/12/2026 04:34PM

A repeat of an earlier issue today started at 9:27 PT / 16:27 UTC.

Latest Anthropic outages

Elevated errors on Claude Opus 4.6 and Sonnet 4.6 - about 7 hours ago

Elevated errors on Claude.ai (including login issues for Claude Code) - 2 days ago

Claude Desktop app unresponsive - 5 days ago

Elevated errors on Claude Haiku 4.5 - 6 days ago

Filesystem connector missing from Claude Desktop - 7 days ago

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