[AINews] NVIDIA Cosmos 3, Nemotron 3 Ultra, and RTX Spark

NVIDIA has launched Cosmos 3, integrating language, image, video, audio, and action within a Mixture-of-Transformers architecture. The new model features Nano with 16 billion parameters and Super with 64 billion, positioning it as a leading model for image and video generation. Cosmos 3 represents a significant advancement in multimodal world models, designed as a full-stack release that includes weights, code, datasets, and fine-tuning recipes. Additionally, the Cosmos Coalition was announced, partnering with entities like Runway to foster an open ecosystem for world models.