Resolved
The issue affecting Claude Mythos 5 and Claude Fable 5 has been resolved.
Posted Aug 13, 2026 - 16:08 UTC
Update
We are investigating elevated errors on requests to Claude Mythos 5 and Claude Fable 5. We will provide an update as soon as possible.
Posted Aug 13, 2026 - 15:44 UTC
Investigating
We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, and Claude Sonnet 5. We will provide an update as soon as possible.
Posted Aug 13, 2026 - 14:33 UTC
This incident affected: claude.ai, Claude API (api.anthropic.com), Claude Code, and Claude Cowork.