Nvidia releases Cosmos3-H-Dreams real-time surgical world model

Nvidia released Cosmos3-H-Dreams on October 20, 2026, a real-time action-conditioned generative world model for robotic surgery fine-tuned on clinical cholecystectomy recordings from the CMR Surgical Versius system. The ~15.17B-parameter model runs interactively on a single RTX PRO 6000 GPU and is available under the NVIDIA Open Model License.

• Trained on 64 cholecystectomy recordings, about 526 minutes of video
• Mixture-of-Transformers architecture pairs Qwen3-VL-8B with latent diffusion
• Runs at 30 FPS at 832x480 with four denoising steps on RTX PRO 6000
• Checkpoint and code published on GitHub and Hugging Face on October 20