{"id":"anthropic-status-e669ca04f9dc","seq":4877,"kind":"status","title":"Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1","url":"https://status.claude.com/incidents/t33dncr5ydvl","permalink":"https://vulnpulse.app/items/anthropic-status-e669ca04f9dc","summary":"Sep 11 , 14:37 UTC Resolved - The issue affecting Claude services has been resolved. Impact occurred from 13:57 to 14:20 UTC Sep 11 , 14:28 UTC Update - A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery. Sep 11 , 14:28 UTC Monitoring - A fix has been deployed for Claude Mythos 5.1 and Claude Fable 5.1 and we are monitoring for recovery. Sep 11 , 14:21 UTC Identified - 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. Sep…","severity":null,"techs":["anthropic"],"cves":[],"tags":["resolved"],"source":{"id":"anthropic-status","name":"Anthropic Status"},"published_at":"2026-09-11T14:37:11.000Z","fetched_at":"2026-10-21T16:17:54.408Z"}