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Outage in Claude

Elevated errors on Claude Haiku 4.5

Resolved Minor
March 04, 2026 - Started about 6 hours ago - Lasted about 1 hour
Official incident page

Incident Report

Summary AI Generated

Claude experienced elevated errors with Haiku 4.5 that affected both claude.ai and api.anthropic.com for 1 hour, with users also reporting issues with Opus 4.6 and Sonnet 4.6. The service team implemented a fix and monitored the results until errors returned to baseline levels.

The earlier issues with Haiku 4.5 have reappeared.
Components affected
Claude claude.ai Claude api.anthropic.com
Latest Updates ( sorted recent to last )
RESOLVED about 5 hours ago - at 03/04/2026 05:01PM

Errors have returned to the baseline as of 8:08 PT / 16:08 UTC.

MONITORING about 6 hours ago - at 03/04/2026 04:13PM

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

INVESTIGATING about 6 hours ago - at 03/04/2026 03:58PM

The earlier issues with Haiku 4.5 have reappeared.

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