Elevated errors for Claude Sonnet 5.5

Resolved

Yes — Claude had a problem on October 27, 2026, and Claude (Anthropic) has since marked it resolved. Claude (Anthropic)'s latest word: “The issue affecting Claude services has been resolved.”

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Timeline

Started: 10/27/2026, 9:14:35 AM

Last update: 10/27/2026, 9:56:46 AM

Resolved: 10/27/2026, 9:56:46 AM

Affected: rwppv331jlwc, k8w3r06qmzrp, yyzkbfz2thpt, bpp5gb3hpjcl

Claude (Anthropic)'s official report →

Updates

resolved
The issue affecting Claude services has been resolved.
10/27/2026, 9:56:46 AM
monitoring
A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.
10/27/2026, 9:38:11 AM
investigating
We are investigating elevated errors on requests to Claude Sonnet 5.5. We will provide an update as soon as possible.
10/27/2026, 9:14:35 AM

More Claude (Anthropic) incidents

Elevated errors for Claude Fable 5.1 — resolved, 2d ago
Elevated errors for Claude Sonnet 5.5 and other models — resolved, 2d ago
Elevated errors for Claude Fable 5 and Claude Fable 5.1 — resolved, 3d ago
Elevated errors for Claude Opus 5.5 — resolved, 4d ago
Elevated errors for Claude Fable 5.1, Sonnet 5.5, and Haiku 5.5 — resolved, 4d ago
Elevated errors affecting Connectors — resolved, 5d ago

Is Claude down right now?All outage history →