Claude (Anthropic) outage, 5 October 2026
Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1
- Started
- Resolved
- 5 Oct 2026, 13:21 UTC (after 16 min)
- Impact
- Major
- Affected
- claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
Last update from Claude (Anthropic)
The issue affecting Claude Mythos 5.1 and Claude Fable 5.1 has been resolved. Impact occurred from 05:40 PT / 12:40 UTC to 06:10 PT / 13:10 UTC.
Read the full incident on the official Claude (Anthropic) status page
Is Claude (Anthropic) down now?
This page is the record of one past incident. For the live status, see Is Claude (Anthropic) down right now? - it reads the official status page every 2 minutes.