Elevated errors for Mythos 5, Fable 5, Opus 5 and Claude Haiku 4.5

Resolved

This incident has been resolved.

Update

The issue has been identified and a fix is being implemented.

Investigating

We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, and Claude Haiku 4.5. We will provide an update as soon as possible.