Technology Podcasts

After LLMs: Spatial Intelligence and World Models — Fei-Fei Li & Justin Johnson, World Labs

Fei-Fei Li and Justin Johnson discuss their new platform Marble, a generative world model that turns text, images, and spatial inputs into editable 3D environments, highlighting its technical core of Gaussian splats and real‑time interactivity across devices. They argue that spatial intelligence—understanding and manipulating 3D/4D structures—is the next AI frontier beyond language models, offering richer, higher‑bandwidth representations for tasks like VFX, game design, robotics simulation, and scientific discovery. The conversation also covers the scaling of compute, the role of physics‑aware models for causal reasoning, and the need for open benchmarks and university resources to democratize this emerging field.