---
title: "Discussion on \"GR00T N1 & N1.5: NVIDIA's Open-Source Humanoid Foundation Model — Complete Analysis\" | Hashnode"
description: "Discussion on \"GR00T N1 & N1.5: NVIDIA's Open-Source Humanoid Foundation Model — Complete Analysis\". TL;DR\nGR00T 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..."
url: "https://hashnode.com/posts/gr00t-n1-n15-nvidias-open-source-humanoid-foundation-model-complete-analysis/69e570e4e80fddb0d1169ace"
---

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# [GR00T N1 & N1.5: NVIDIA's Open-Source Humanoid Foundation Model — Complete Analysis](https://telos-robotics.hashnode.dev/gr00t-n1-n15-nvidias-open-source-humanoid-foundation-model-complete-analysis?utm_source=hashnode&utm_medium=feed)

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...

Apr 20 · 11 min read · telos-robotics.hashnode.dev  
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## Written by

[telos](https://hashnode.com/@telos)

@telos · Seoul, South Korea

  
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I build robots for a living. Not in simulation. Not in a lab. On the floor, with real hardware, real failure modes, and real deadlines. My work spans the full stack of modern robotics: embedded systems firmware, autonomous navigation, and the end-to-end pipeline for Vision-Language-Action (VLA) model development — dataset collection, training, inference optimization, and sim-to-real transfer. I've worked hands-on with platforms from Unitree, Deep Robotics, Dexmate, and Robotis, among others. Each one teaches you something different about the gap between what models promise and what robots actually do.

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