Elevated errors for multiple models

Global World Thu, 24 Sep 2026 00:27:33 GMT Moderate confidence — 64/100

Identified We have identified the cause of elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 and are working on a fix.
We will provide an update as soon as possible.
Posted Sep 22, 2026 - 01:17 UTC Investigating We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5.

Unverified

Identified We have identified the cause of elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 and are working on a fix.
We will provide an update as soon as possible.
Posted Sep 22, 2026 - 01:17 UTC Investigating We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5.

Sources: Claude