# Hugging Face — Post-Training Isaac GR00T N1.5 for LeRobot SO-101 Arm

- Company: Hugging Face (huggingface.co)
- Announced: 2025-06-11T18:27:22+00:00
- Category: model-update
- Subject: Platform
- Models affected: Isaac GR00T N1.5, Isaac GR00T N1, GR00T N1.5
- Source: https://huggingface.co/blog/nvidia/gr00t-n1-5-so101-tuning
- Record: https://forck.live/items/1679-post-training-isaac-gr00t-n1-5-for-lerobot-so-101-arm

NVIDIA announced the availability of Isaac GR00T N1.5, the first major update to the open foundation model for humanoid robots, and provided a tutorial on fine-tuning it for the LeRobot SO-101 arm.

## Evidence

Verbatim from https://huggingface.co/blog/nvidia/gr00t-n1-5-so101-tuning:

> Today, we announced the availability of Isaac GR00T N1.5, the first major update to Isaac GR00T N1, the world’s first open foundation model for generalized humanoid robot reasoning and skills. This cross-embodiment model processes multimodal inputs, including language and images, to perform manipulation tasks across diverse environments. It is adaptable through post-training for specific embodiments, tasks, and environments. In this blog, we’ll demonstrate how to post-train (fine-tune) GR00T N1.5 using teleoperation data from a single SO-101 robot arm.

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Record: https://forck.live/items/1679-post-training-isaac-gr00t-n1-5-for-lerobot-so-101-arm
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