
Unitree G1
Bipedal humanoid robot by Unitree Robotics, designed as a compact research, development, and developer platform.
- Research
- Home Assistance

NVIDIA GR00T N1 (Generalist Robot 00 Training N1) is a foundational AI model for humanoid robots, announced by NVIDIA at GTC 2025 in March 2025. It is the first open foundational model platform specifically designed for humanoid robots.
The GR00T N1 architecture is based on a dual-system approach inspired by Daniel Kahneman's System 1/2 theory. System 1 (fast): a neural motor policy (flow matching policy) generating action tokens at low latency — responsible for fluency and smooth movement. System 2 (slow): a large VLM (Llama-based or proprietary) responsible for understanding natural language, task sequence planning and contextual adaptation. Both systems operate asynchronously — System 2 sets high-level goals, System 1 executes them in real time.
GR00T N1 is trained on cross-embodiment data: a combination of data from many robot types (manipulators, mobile robots, humanoids), synthetic demonstrations from NVIDIA Isaac Sim, and wild-collected data. The data covers multiple modalities: RGB, depth, tactile (proprioception), language instructions. NVIDIA makes pre-trained weights available via Hugging Face and NGC (NVIDIA GPU Cloud).
GR00T N1 infrastructure is tightly integrated with the NVIDIA Isaac ecosystem: Isaac Sim for synthetic training data, Isaac Lab for RL fine-tuning, Isaac ROS for ROS 2 deployment. NVIDIA provides GR00T N1 as a base model for fine-tuning on specific hardware platforms (Unitree G1, Agility Digit, Figure 01/02, Boston Dynamics Atlas) through GR00T Isaac Lab workflows.
The model is open-weights (Apache 2.0 for weights and inference code), and the architecture and data are described in a technical report. This is a strategic NVIDIA initiative to position the Isaac platform as the standard for humanoid robotics AI, analogous to how CUDA became the standard for HPC.
An API Library is a software package that exposes programmatic interfaces for communicating with a device, service, or system. In robotics it typically forms a lightweight integration layer built on top of the manufacturer's official API or an open-source project, abstracting low-level protocol details and providing language-native bindings (Python, C++, Java, etc.).
The robot learning role describes software for training a robot's control policies and manipulation/locomotion skills using machine learning methods. It covers: reinforcement learning in simulation with sim-to-real transfer, imitation learning and learning from demonstration, training Vision-Language-Action (VLA) models, and fine-tuning robotics foundation models. It typically uses massively parallelized simulation environments (Isaac Lab, MuJoCo) to generate training data, then deploys the trained policies on a physical robot.
Robot Control denotes the role of software responsible for motion control, command execution, coordination of actuating elements and the direct operational logic of the robot.
NVIDIA GTC 2025 demo — Jensen Huang demonstrated GR00T N1 on stage, controlling multiple humanoid models (Unitree G1, Figure 01/02, Agility Digit) performing manipulation tasks. Unitree G1 + GR00T — NVIDIA and Unitree Robotics announced a partnership; GR00T N1 fine-tuned on G1 hardware through the official Isaac Lab workflow. Unitree released Isaac Lab recipes for the G1. Figure AI — Figure 02 with a stack augmented by GR00T N1 pre-training (fine-tuned on Figure data). Demonstrations in BMW Spartanburg manufacturing work. Agility Robotics Digit — GR00T N1 as the base pre-trained model for Digit, fine-tuned by Agility for specific warehousing tasks. 1X Technologies NEO — Norwegian humanoid company integrating GR00T N1 as the model base for NEO Gamma. Labeling partners: Scale AI, Datagen — collecting and annotating cross-embodiment data for further GR00T training.
GitHub: NVIDIA-ISAAC-ROS/isaac_ros_nitros + huggingface/groot-n1 — ~3 000 combined stars across related repositories. Active community via NGC Forums and Isaac ROS GitHub Discussions. NVIDIA Developer Forums: GR00T N1 thread with >500 posts in the first 3 months after announcement. Active response from the NVIDIA team. Citations: technical report 'GR00T N1: An Open Foundation Model for Generalist Humanoid Robots' (2025) — ~150 citations in 3 months. Partner ecosystem: 30+ robotics companies announced support for GR00T N1 (Unitree, Figure, Agility, Apptronik, Fourier, HEBI, Kepler, Skild AI and others). This is the largest partner coalition for a single robot foundation model. NGC Model Card: pre-trained model available for download via NVIDIA NGC with over 10 000 downloads in the first month.

Bipedal humanoid robot by Unitree Robotics, designed as a compact research, development, and developer platform.

Full-size general-purpose humanoid (~180 cm, ~47 kg). Bipedal, 5 DOF per leg, 3.3 m/s walking speed, 360° perception via 3D LiDAR + depth camera, Unitree M107 PMSM joint motors (~360 N·m peak knee torque).

Figure 03 is the third-generation humanoid robot from Figure AI, designed for Helix, home environments, and scalable mass production.

General-purpose humanoid robot developed by Tesla since 2021 (Tesla Bot). About 173 cm tall, 57 kg, 20 kg payload. Generation 3 hands have 22 degrees of freedom. Controlled by an AI system derived from Tesla FSD.

Boston Dynamics bipedal humanoid robot. The fully electric generation unveiled in 2024 succeeds the hydraulic Atlas that was retired after more than a decade of research.

Compact, high-dynamics bipedal humanoid by MagicLab. 140 cm, 40 kg, 24–50 DOF, walking speed up to 2.5 m/s. Unveiled on 8 July 2025 with martial arts and acrobatic demos.
Ubuntu 24.04 LTS 'Noble Numbat' — supported until April 2029. The host for ROS 2 Jazzy.
Recommended deployment in NGC Docker container (nvidia-isaac-ros:latest). Requires JetPack 6.0+ on Jetson. Proprioception: IMU + joint encoders required for full modality.
License family: Permissive
GR00T N1.5 — improved model with expanded cross-embodiment dataset, better natural-language instruction understanding and TensorRT 10 optimisation for Jetson.
First public release of GR00T N1 at GTC 2025. Open-weights (Apache 2.0), Isaac Sim/Lab/ROS integration, dual-system architecture.