Cosmos-Reason1 Technical Deep Dive: Revolutionizing Physical Commonsense Reasoning with Multimodal LLMs Visual representation of AI-driven physical reasoning (Credit: Unsplash) 1. Architectural Innovations and Technical Principles 1.1 Multimodal Fusion Architecture The NVIDIA Cosmos-Reason1-7B model employs a dual-modality hybrid architecture, combining a Vision Transformer (ViT) for visual encoding with a Dense Transformer for language processing. Built upon the Qwen2.5-VL-7B-Instruct foundation, it achieves breakthrough capabilities through two-phase optimization: Supervised Fine-Tuning (SFT) Phase: Trained on hybrid datasets like RoboVQA (robotic visual QA) and HoloAssist (human demonstration data), the model establishes robust vision-language correlations. Video inputs are processed at 4 FPS, mirroring human visual perception …