Anthropic has shipped Claude Fable 5, the first publicly available version of its closely watched Mythos model
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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.
Key facts
Anthropic has released Claude Fable 5, the first publicly available version of its closely watched Mythos model
Mollick even managed to create Duino, a game based on the Duino Elegies, the celebrated cycle of poems by poet Rainer Maria Rilke
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
As for founders and operators watching AI capability curves, it’s a useful data point about how quickly the floor is rising
Summary
Anthropic has released Claude Fable 5, the first publicly available version of its closely watched Mythos model. In his testing, Fable consistently “outperformed every other public model I have used by a considerable margin,” Mollick wrote Tuesday on his Substack. Perhaps most strikingly, Mollick used Fable to create a variety of video games, all of which were generated via “one initial prompt” in Claude Code, the researcher says. Among these, Snake is exactly what it sounds like. The snake never stops moving, and if you run off the screen, you die.