While language models understand the world through text, Demis Hassabis argues they lack an intuitive grasp of physics and spatial dynamics. He sees 'world models'—simulations that understand cause and effect in the physical world—as the critical technology needed to advance AI from digital tasks to effective robotics.

Demis Hassabis describes an innovative training method combining two AI projects: Genie, which generates interactive worlds, and Simmer, an AI agent. By placing a Simmer agent inside a world created by Genie, they can create a dynamic feedback loop with virtually infinite, increasingly complex training scenarios.

Language is just one 'keyhole' into intelligence. True artificial general intelligence (AGI) requires 'world modeling'—a spatial intelligence that understands geometry, physics, and actions. This capability to represent and interact with the state of the world is the next critical phase of AI development beyond current language models.

Startups and major labs are focusing on "world models," which simulate physical reality, cause, and effect. This is seen as the necessary step beyond text-based LLMs to create agents that can truly understand and interact with the physical world, a key step towards AGI.

Google's Project Genie can generate playable game worlds from text prompts, a feat that would have seemed like AGI recently. However, users' expectations immediately shift to the next challenge: demanding AI-generated game mechanics like timers, scoring, and complex interactions.

Large language models are insufficient for tasks requiring real-world interaction and spatial understanding, like robotics or disaster response. World models provide this missing piece by generating interactive, reason-able 3D environments. They represent a foundational shift from language-based AI to a more holistic, spatially intelligent AI.

The push toward physical AI and spatial intelligence is primarily a strategy to overcome data scarcity for training general models. By creating simulated 3D environments, researchers can generate the novel, complex data that is currently unavailable but crucial for advancing AI into the real world.

The AI's ability to handle novel situations isn't just an emergent property of scale. Waive actively trains "world models," which are internal generative simulators. This enables the AI to reason about what might happen next, leading to sophisticated behaviors like nudging into intersections or slowing in fog.

The ability to generate playable 3D worlds from text, as demonstrated by Google's Genie 3, suggests future games won't be developed but generated on-demand. This capability is viewed as an existential threat to the traditional game industry, potentially making franchises like Grand Theft Auto obsolete.