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Robot AI model

Isaac GR00T N1.5

GR00T N1.5 uses a grounding-tuned Eagle 2.5 backbone and a flow-matching action transformer, with real-robot evaluations on Fourier GR-1 and Unitree G1. Its published checkpoint is labeled 3B; weights use NVIDIA OneWay Noncommercial License terms and code uses Apache-2.0.

Records last verified Oct 13, 2026 · Send a correction

Also known as GR00T N1.5

Organization
NVIDIA
Type
VLA
Released / introduced
May 18, 2025
Public weights
Public weights
Licence / scope
NVIDIA OneWay Noncommercial License
Parameters
3B
Base model
NVIDIA Eagle 2.5 (grounding-tuned variant)
Humanoid association
Humanoid-native
Inputs
vision, language, proprioception
Outputs
continuous action chunks

Release dates can mark an announcement or paper introduction. Public checkpoints, code licences and weight terms are distinct; follow the publisher’s links for the stated scope.

Code ↗Weights ↗Project ↗

Documented embodiments

Source-associated hardware; this list does not establish plug-and-play compatibility or commercial robot capability.

  • Fourier GR-1 →

    Real-robot language-following evaluations.

  • Unitree G1 →

    Post-trained on G1 teleoperation data and evaluated on seen and unseen objects.

Disclosed training data

More robot AI models

π0.5 →Hume →

Evidence

Sources

  1. [s1] GR00T-N1.5-3B model card ↗

    NVIDIA · official · accessed Oct 13, 2026

  2. [s2] NVIDIA Powers Humanoid Robot Industry With Cloud-to-Robot Computing Platforms for Physical AI ↗

    NVIDIA · official · published May 18, 2025 · accessed Oct 13, 2026

  3. [s3] GR00T N1.5: model, training mixture and real-robot evaluations ↗

    NVIDIA · official · published Jun 11, 2025 · accessed Oct 13, 2026

  4. [s4] Isaac GR00T official repository: model versions and code licensing ↗

    NVIDIA · official · accessed Oct 13, 2026

  5. [s5] NVIDIA OneWay Noncommercial License (22 March 2022) ↗

    NVIDIA · official · published Mar 22, 2022 · accessed Oct 13, 2026