Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1
Sep 15, 09:48 UTCSep 15, 11:14 UTC
Duration
1h 26m
Impact
Major
Root cause
Not disclosed
Anthropic, 90 days
49 incidents
Affected
claude.aiClaude API (api.anthropic.com)Claude CodeClaude Cowork
Final update
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.
Timeline
- Resolved · Sep 15, 11:14 UTC
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.
- Monitoring · Sep 15, 10:50 UTC
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.
- Investigating · Sep 15, 09:52 UTC
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.
- Investigating · Sep 15, 09:48 UTC
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.
More from Anthropic
Full historyDegraded performance for Claude Fable 5.1lasted 26mElevated errors affecting the Google Calendar connectorlasted 3h 46mElevated errors affecting the Gmail connectorlasted 1h 49mElevated errors for Claude Sonnet 5.5lasted 41mElevated errors for Claude Sonnet 5.5lasted 42mElevated errors for Claude Fable 5.1lasted 32m