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Claude · incident

Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1

Provider lifecycle: monitoring

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Partial outage
Provider incident confirmed

Claude Status has not marked this as resolved. The latest official update is shown first below.

Official timeline

Provider updates

3
  1. 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.

    Affected: Claude API (api.anthropic.com), Claude Code, Claude Cowork, claude.ai

  2. investigating

    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.

    Affected: Claude API (api.anthropic.com), Claude Code, Claude Cowork, claude.ai

  3. investigating

    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.

    Affected: Claude API (api.anthropic.com), Claude Code, Claude Cowork, claude.ai