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Late last year, Yann LeCun, the Turing Award–winning A.I. pioneer, left Meta after a long-simmering disagreement about machine learning exploded into public view. LeCun had become increasingly convinced that large language models—the foundational technology for most modern frontier labs—was a technical dead end. The future, he posited, belonged to what industry researchers refer to as world models: A.I. systems trained to simulate the physical world. A few weeks later, LeCun quietly launched his own company, explicitly focused on world models: Advanced Machine Intelligence Labs.
