Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1

Sep 15, 09:52 UTC
Update - We are investigating elevated errors on requests to Claude Mythos 5.1 and Claude Fable 5.1. We will provide an update as soon as possible.

Sep 15, 09:48 UTC
Investigating - We are investigating elevated errors on requests to Claude Mythos 5.1 and Claude Fable 5.1. We will provide an update as soon as possible.

via Claude Status - Incident History