World models stories

Aug 21, 2026

AI researchers find world models need mental state modeling to predict human behavior

New research reveals that current AI world models like Sora and Genie fail to predict human actions because they only simulate physics while ignoring beliefs, intentions, and feelings. A "Mental World Modeling" framework that incorporates these mental variables shows weaker language models can outperform stronger models that lack this capability.

Aug 21, 20263 sources

Jun 1, 2026

Nvidia Unveils Cosmos 3 World Model for Robotics and Autonomous Systems

Nvidia released Cosmos 3, an open AI world model designed to help robots, autonomous vehicles, and other physical systems better understand and predict real-world environments.

Jun 1, 20261 source

Top claims

▪In testing across eight language models, the full Mental World Modeling pipeline achieved an F1 accuracy score of 87.9, compared to 63.3 for direct answers and 98.5 for humans.
▪Removing the mental channel from the Mental World Modeling framework caused language models to drop an average of 12.1 F1 points, while removing the physical channel caused a 16.5-point drop.
▪The infant-inspired AI model developed by Princeton University researchers outperformed a blank-slate model in predicting object movements and learning from smaller datasets.

Subtopics

AI foundation models2 AGI reasoning and planning1 AI agents1 AI research & benchmarks1 Autonomous vehicles1 Consciousness & sentience1 Open-source AI1

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