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title: ARDY Motion Playground
emoji: 🕺
colorFrom: gray
colorTo: purple
sdk: gradio
sdk_version: 6.20.0
app_file: app.py
short_description: Text-to-motion with an interactive 3D skeleton playground
python_version: "3.12"
startup_duration_timeout: 1h
pinned: false
preload_from_hub:
- unsloth/llama-3-8b-Instruct
- McGill-NLP/LLM2Vec-Meta-Llama-3-8B-Instruct-mntp
- McGill-NLP/LLM2Vec-Meta-Llama-3-8B-Instruct-mntp-supervised
- nvidia/ARDY-Core-RP-20FPS-Horizon40
- nvidia/ARDY-G1-RP-25FPS-Horizon52
---
# ARDY Motion Playground
Interactive **text-to-motion** demo for [ARDY](https://research.nvidia.com/labs/sil/projects/ardy/)
(*Autoregressive Diffusion with Hybrid Representation for Interactive Human Motion Generation*, NVIDIA, SIGGRAPH 2026).
Pick a **rig** (human or robot), type a natural-language prompt, generate a 3D motion clip,
then **orbit, scrub, and play** it in the built-in Three.js playground (play/pause, timeline
scrubber, speed control, loop, and a root-trajectory trail).
- **Human rig:** `nvidia/ARDY-Core-RP-20FPS-Horizon40` — 27-joint "Core" skeleton at 20 fps.
- **Robot rig:** `nvidia/ARDY-G1-RP-25FPS-Horizon52` — 34-joint Unitree G1 humanoid robot at 25 fps
(same rig as the sibling Space `hugging-apps/ardy-g1-motion-generation`).
- **Text encoder:** LLM2Vec-Llama-3-8B using the public
`unsloth/llama-3-8b-Instruct` base plus the original McGill MNTP and supervised
adapters. No Meta-gated base-model access is required.
- **Hardware:** ZeroGPU.
Post-processing (foot-skate cleanup, which needs a compiled C++ extension) is disabled in this
demo; generation uses the model's autoregressive path directly.
Based on the [nv-tlabs/ardy](https://github.com/nv-tlabs/ardy) reference implementation
(`scripts/generate.py`).
## Blender export
Open **Blender export** to generate three downloadable files:
- `ardy_motion.bvh` — directly importable with Blender's BVH importer.
- `ardy_motion.npz` — complete ARDY output including joint positions, local and
global rotations, root trajectory, and foot contacts.
- `metadata.json` — prompt, seed, FPS, skeleton hierarchy, and coordinate-system
information.
The programmatic endpoint is `/generate_blender`. The existing `/generate`
endpoint and Three.js playground remain available.
The base and adapter repositories can be overridden with the Space variables
`LLM2VEC_BASE_MODEL`, `LLM2VEC_MNTP_MODEL`, and `LLM2VEC_SUPERVISED_MODEL`.
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