Anthropic has released Claude Fable 5 , the first publicly available version of its closely watched Mythos model. What can Fable actually do? All kinds of things, it turns out. Ethan Mollick, a notable AI researcher and University of Pennsylvania scholar, has been playing around with the model and seems to be having a lot of fun. In his testing, Fable consistently “outperformed basically every other public model I have used by a considerable margin,” Mollick wrote Tuesday on his Substack. He