Elevated errors for Claude Sonnet 5.5 and other models
View the provider incident record →Current answer
Anthropic (Claude) experienced a major incident: Elevated errors for Claude Sonnet 5.5 and other models. ServiceAlert observed recovery on Oct 25, 2026.
Official Anthropic (Claude) status page Current Anthropic (Claude) status
ServiceAlert observed status change:
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Incident Lifecycle
Affected Components
claude.ai
Claude API (api.anthropic.com)
Claude Code
Claude Cowork
Incident Timeline
Monitoring
A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.
Oct 25, 2026 at 6:35 AM UTC
Identified
We have identified the cause of elevated errors on requests to Claude Sonnet 5.5 and are working on a fix. We will provide an update as soon as possible.
Oct 25, 2026 at 6:27 AM UTC
Investigating
We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5. We will provide an update as soon as possible.
Oct 25, 2026 at 6:14 AM UTC
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