World model companies are keeping a lot of secrets

# World Model Companies Are Keeping Their Cards Close to Their Chest Companies developing "world models"—AI systems that can simulate and predict how the real world works—are raising huge amounts of money and getting lots of attention, but they're refusing to share details about what they're actually building or how. This secrecy makes it hard for investors, partners, and the public to understand what these companies are really working on or whether their big promises will actually pan out.