Anthropic is investigating intermittent error spikes affecting Claude Mythos 5.1 and Claude Fable 5.1. The company has classified the incident as major and is currently in the investigating phase.
Anthropologic develops Claude, an AI assistant used by developers, enterprises, and other customers for a range of applications including research, coding, and content generation.
Anthropic posted the initial report stating it was investigating elevated errors on requests to the two model versions, with a commitment to provide updates as information becomes available.
This is a developing story. The Downtime will continue monitoring and update as new information is released.
