The Bitter Lesson

Anthropic released Claude Fable 5.2 and Mythos 5.2, with Fable 5.2 scoring 64.9% on the RoboDojo Sim robotics benchmark, up 37.3 points from the prior 27.6% and ahead of Claude Opus 5.5 and GPT-6 Astra as well as most robotics-specific systems. Official demos show real-robot manipulation tasks, and former Tesla Optimus researcher Bingjie Tang has joined the company, signaling Anthropic's push of general models into embodied AI.

Richard Sutton, author of The Bitter Lesson, clarified on X that brute-force computation alone cannot yield genuine intelligence and that clever new methods are still needed. Commentators add that the essay targets hardcoding human ingenuity into systems, not algorithmic or architectural innovation.