{"id":"anthropic-status-58ec8d58b6d3","seq":4875,"kind":"status","title":"Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1","url":"https://status.claude.com/incidents/6304r9jjhj34","permalink":"https://vulnpulse.app/items/anthropic-status-58ec8d58b6d3","summary":"Sep 15 , 11:14 UTC Resolved - A fix has been deployed for Claude Mythos 5.1 and Claude Fable 5.1 and we are monitoring to ensure it has resolved the issue. Sep 15 , 10:50 UTC Monitoring - A fix has been deployed for Claude Mythos 5.1 and Claude Fable 5.1 and we are monitoring to ensure it has resolved the issue. 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 Fa…","severity":null,"techs":["anthropic"],"cves":[],"tags":["resolved"],"source":{"id":"anthropic-status","name":"Anthropic Status"},"published_at":"2026-09-15T11:14:44.000Z","fetched_at":"2026-10-21T16:17:54.408Z"}