Degraded performance for Claude Fable 5

Incident Report for Claude

Resolved

The issue affecting other Claude models has been resolved.
Posted Oct 21, 2026 - 20:29 UTC

Investigating

We are investigating elevated errors on requests to Claude Fable 5. We will provide an update as soon as possible.
Posted Oct 21, 2026 - 19:49 UTC
This incident affected: claude.ai, Claude API (api.anthropic.com), Claude Code, and Claude Cowork.