Modelpeers
Claude Mythos 5.1 characterClaude Fable 5.1 characterClaude Opus 5 character

Claude Opus 5, Fable 5.1, Mythos 5.1

9 products from Anthropic

Incident · 1 h 20 min

Anthropic reported elevated errors across several Claude models for about an hour and a half

Some requests to Claude Opus 5, Fable 5.1 and Mythos 5.1 returned errors on claude.ai, the Claude API, Claude Code and Claude Cowork, which Anthropic marked as a partial outage. It's resolved.

Who is affected:
People using Claude Opus 5, Claude Fable 5.1, Claude Fable 5, Claude Mythos 5.1 and 5 more while it lasted.
What to do:
Retry any request that failed during the incident.

Source

"This issue has been resolved. Impact occurred from 5:50pm PT / 00:50 UTC to 7:10pm PT / 02:10 UTC."

Claude status page (status.claude.com) incident history

Published

Open the sourcestatus.claude.com

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