Provider incident title: “Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1”
Started
Friday, September 11, 2026
02:19 PM UTC
Duration
17m
total
Resolved
02:37 PM UTC
Sep 11, 2026
We are investigating elevated errors on requests to Claude Fable 5.1 and Claude Mythos 5.1. We will provide an update as soon as possible.
We have identified the cause of elevated errors on requests to Claude Mythos 5.1 and Claude Fable 5.1 and are working on a fix. We will provide an update as soon as possible.
A fix has been deployed for Claude Mythos 5.1 and Claude Fable 5.1 and we are monitoring for recovery.
A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.
The issue affecting Claude services has been resolved. Impact occurred from 13:57 to 14:20 UTC
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This incident was sourced from Claude's official Atlassian Statuspage. Tickerr ingests updates every 10 minutes to surface incidents as they are posted by the provider.
This incident lasted 17m.
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