Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1

Anthropic reported intermittent error spikes affecting Claude Mythos 5.1 and Claude Fable 5.1, according to a status page notice that offers email and SMS subscriptions for incident updates. The notice states subscribers receive email notifications when incidents are updated and text message notifications whenever Claude creates or resolves an incident. No cause, duration, or number of affected users was disclosed.

Subscribe to updates for Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1 via email and/or text message. You'll receive email notifications when incidents are updated, and text message notifications whenever Claude creates or resolves an incident. To receive SMS updates, please verify your number. To proceed with just email click ‘Subscribe’