Cosmos 3

Cosmos 3 is an open-source physical AI data engine from NVIDIA that generates physically accurate video, robot trajectories, and simulation scenarios for embodied AI training. Built on a unified multimodal architecture, it can significantly reduce physical AI training cycles. Open-sourced on HuggingFace with weights. At SIGGRAPH 2026, NVIDIA demonstrated Cosmos-Dreams, a neural closed-loop simulator built on Cosmos 3.