NVIDIA launches Cosmos3, the first fully open-source multimodal physical AI large model using a hybrid Transformer architecture for visual reasoning, world generation, and action prediction. It reduces training cycles from months to days and achieves leading physical simulation accuracy. Multiple versions including Cosmos3Super and Cosmos3Nano are released. NVIDIA also forms the Cosmos Coalition with global research teams. CEO Huang Renxun declares the transformative era of physical AI has arrived.