Outage in Claude
Elevated errors for Claude Sonnet 5.5
Resolved MajorIncident Report
Summary AI Generated
Claude Sonnet 5.5 experienced elevated errors affecting both claude.ai and the Anthropic API for approximately 44 minutes on October 27, 2026. A fix was deployed during the incident and monitored before being confirmed resolved.
We are investigating elevated errors on requests to Claude Sonnet 5.5. We will provide an update as soon as possible.
Components affected
Claude claude.ai Claude api.anthropic.comLatest Updates ( sorted recent to last )
RESOLVED
2 days ago - at 10/27/2026 09:56AM
The issue affecting Claude services has been resolved.
MONITORING
2 days ago - at 10/27/2026 09:38AM
A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.
INVESTIGATING
2 days ago - at 10/27/2026 09:14AM
We are investigating elevated errors on requests to Claude Sonnet 5.5. We will provide an update as soon as possible.
Latest Claude outages
Elevated errors affecting the Google Calendar connector - about 16 hours ago
Elevated errors affecting the Gmail connector - 1 day ago
Elevated errors for Claude Sonnet 5.5 - 1 day ago
Elevated errors for Claude Fable 5.1 - 4 days ago
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