GR00T N1 & N1.5: NVIDIA's Open-Source Humanoid Foundation Model — Complete Analysis

TL;DR GR00T N1 (arXiv:2503.14734) is NVIDIA's world-first open-source generalist humanoid robot foundation model, announced at GTC 2025 in March. GR00T N1.5 (May 2025) follows with FLARE loss + Eagle 2.5 VLM upgrade, pushing real-robot language-follo...