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Claude · incident

Elevated errors 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

4
  1. monitoring

    A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.

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

  2. monitoring

    A fix has been deployed for Claude Mythos 5.1 and Claude Fable 5.1 and we are monitoring for recovery.

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

  3. identified

    We have identified the cause of elevated errors on requests to Claude Mythos 5.1 and Claude Fable 5.1 and are working on a fix. We will provide an update as soon as possible.

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

  4. investigating

    We are investigating elevated errors on requests to Claude Fable 5.1 and Claude Mythos 5.1. We will provide an update as soon as possible.

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