Outage in Claude

Elevated errors on Claude Opus 5 and Haiku 4.5

Resolved Minor

July 27, 2026 - Started 3 days ago - Lasted about 1 hour
Official incident page

Incident Report

Summary AI Generated

Claude.ai and the Anthropic API experienced elevated error rates affecting Claude Opus 5 and Haiku 4.5 models for approximately 56 minutes. Both models returned errors during the incident, with Haiku 4.5 confirmed as impacted roughly 22 minutes after the investigation began. Errors returned to baseline levels by 14:34 UTC, resolving the incident.

We are currently investigating this issue.

Components affected

Claude claude.ai Claude api.anthropic.com

Latest Updates ( sorted recent to last )

RESOLVED 3 days ago - at 07/27/2026 02:36PM

As of 7:34 PST / 14:34 UTC the errors have returned to baseline.

INVESTIGATING 3 days ago - at 07/27/2026 02:04PM

Haiku 4.5 is also returning errors.

INVESTIGATING 3 days ago - at 07/27/2026 01:42PM

We are currently investigating this issue.

INVESTIGATING 3 days ago - at 07/27/2026 01:41PM

We are continuing to investigate this issue.

INVESTIGATING 3 days ago - at 07/27/2026 01:39PM

We are currently investigating this issue.

Latest Claude outages

Elevated errors across all models - about 9 hours ago

Elevated errors on Claude Opus 5 - 3 days ago

Elevated errors for Opus 5 - 4 days ago

Elevated errors for Claude Fable 5, Claude Sonnet 5, Claude Haiku 4.5, and other models - 4 days ago

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