Modelpeers
Claude Cowork characterClaude Code characterClaude Opus 5 character

Claude Mythos 5, Fable 5, Opus 5

8 products from Anthropic

Incident · 1 h 4 min

Anthropic reported elevated errors for four Claude models for about an hour

Some requests to Claude Mythos 5, Fable 5, Opus 5 and Haiku 4.5 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 Haiku 4.5, Claude Opus 5, Claude Fable 5, Claude Mythos 5 and 4 more while it lasted.
What to do:
Retry any request that failed during the incident.

Source

"We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, and Claude Haiku 4.5. We will provide an update as soon as possible."

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

Published

Open the sourcestatus.claude.com

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