Claude change history

Elevated errors for Claude Fable 5.1

Claude reported a major incident involving elevated errors for Claude Fable 5.1 across claude.ai, Claude API - api.anthropic.com, Claude Code, and Claude Cowork, starting 2026-10-25 08:17 UTC. The vendor said it identified the cause and was working on a fix; the incident remained open when archived, with 0 min elapsed at the last update.