Elevated errors for Claude Fable 5.1

Incident Report for Claude

Resolved

The issue affecting Claude services has been resolved. Impact occurred from 01:08 PT / 08:08 UTC to 01:29 PT / 08:29 UTC.

Posted Oct 25, 2026 - 08:49 UTC

Monitoring

A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.

Posted Oct 25, 2026 - 08:30 UTC

Identified

We have identified the cause of elevated errors on requests to Claude Fable 5.1 and are working on a fix. We will provide an update as soon as possible.

Posted Oct 25, 2026 - 08:17 UTC

Investigating

We are investigating elevated errors on requests to Claude Fable 5.1. We will provide an update as soon as possible.

Posted Oct 25, 2026 - 08:17 UTC

This incident affected: claude.ai, Claude API (api.anthropic.com), Claude Code, and Claude Cowork.