Claude Code and API errors resolved after 30 minutes on October 5
Claude's status page reports elevated errors for Claude Mythos 5.1 and Claude Fable 5.1 on October 5, 2026. Impact lasted from 12:40 to 13:10 UTC and affected Claude Code, the Claude API, claude.ai and Claude Cowork.
SessionWatcher editorial · Published · Updated · Source announcement: 2026-10-05
Related guide: Is Claude down? Live Claude status
Affected models and products
Claude's official status page reported elevated errors on requests to Claude Mythos 5.1 and Claude Fable 5.1 on October 5, 2026. The incident affected Claude Code, the Claude API at api.anthropic.com, claude.ai and Claude Cowork.
Sources: Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1
Impact lasted 30 minutes
The resolved update gives an impact window of 05:40 to 06:10 PT, or 12:40 to 13:10 UTC, lasting 30 minutes. Anthropic posted its investigating update at 13:05 UTC and its resolved update at 13:21 UTC, confirming that the issue affecting both models had been resolved.
Sources: Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1
AI assisted reporting, checked against the linked official sources. Source pages checked 2026-10-05. Editorial process and corrections.