Major incident

Anthropic (Claude): Elevated errors for Claude Fable 5.1

Affected: claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork

Current status of Anthropic (Claude): Operational — live Anthropic (Claude) status

Timeline

1. 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.
2. Oct 25, 2026, 08:17 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.
3. Oct 25, 2026, 08:30 UTC
   monitoring
   A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.
4. Oct 25, 2026, 08:49 UTC
   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.

Updates as published by Anthropic (Claude) (original).