Is HY-Motion 1.0 free?

Yes, it is an open source project released by Tencent. You can download the code and model weights for free from GitHub and Hugging Face.

Can I use this for video games?

Yes, HY-Motion is specifically designed to output 3D motion data (SMPL H skeleton format) which can be retargeted to game characters in engines like Unity and Unreal Engine.

Does it generate video?

While it includes a renderer to preview the motion as a video, its primary output is mathematical motion data (skeleton rotations/positions), not a standard video file like MP4 (unless you just render the preview).

What hardware do I need?

You need a computer with a CUDA-enabled NVIDIA GPU. The full 1B parameter model requires decent VRAM (likely 12GB+), but a "Lite" version (0.46B) is available for less powerful cards.

HY-Motion 1.0

Scaling Flow Matching Models for Text To Motion Generation.

From Tencent

Founder: Tencent Hunyuan Team

Video & Animation

Dec 2025

10K+

Free

Pricing Model

Free

Starting Price

$0/Month

About This AI

HY-Motion 1.0 is a groundbreaking open source AI model from Tencent that generates high quality 3D human motion data directly from text prompts. It is the first motion generation model to scale to 1 billion parameters using a Diffusion Transformer (DiT) architecture and Flow Matching.

Unlike video generators that create 2D pixels, HY-Motion creates 3D skeleton animations (SMPL H format) that game developers and animators can import directly into engines like Unity, Unreal, or Blender to drive characters (NPCs) without manual keyframing or motion capture suits.

3D AI Art Image To Video Text To Video Video Generator

Pricing

Pricing Model

Free

Starting Price

$0/Month

Key Features

Text to Motion Generates complex 3D character animations (e.g., "a warrior swinging a sword," "person jumping joyfully") from simple text descriptions.
Billion Parameters The largest open source motion model to date, providing superior understanding of complex instructions compared to smaller models.
Flow Matching Architecture Uses advanced flow matching instead of standard diffusion for faster and more stable motion generation.
Long Duration Generation Capable of generating motion sequences up to 10+ seconds (and extendable) with high coherence.
Dual Stream Attention separates text and motion data during processing to prevent "noise" from corrupting the semantic meaning of the prompt.
Wide Motion Coverage Trained on over 3,000 hours of data covering 200+ categories including sports, daily life, and combat actions.

Pros

Completely free and open source (Apache 2.0).
Generates editable 3D data (BVH/Skeleton), not just video.
"Lite" version (0.46B) available for consumer GPUs.
Drastically speeds up game development and animatics.
High instruction following score (better than competitors like MoMask).

Cons

No official GUI (requires running Python code or community wrappers).
Requires technical knowledge to integrate into 3D software (Blender/Unity).
"In the wild" training data can occasionally cause minor foot sliding artifacts.
Still struggles with extremely complex, multi stage logic commands.

Best for Game developers, technical animators, indie studios, and researchers who need to generate 3D character animations for games or simulations automatically.

FAQs

Is HY-Motion 1.0 free?
Yes, it is an open source project released by Tencent. You can download the code and model weights for free from GitHub and Hugging Face.
Can I use this for video games?
Yes, HY-Motion is specifically designed to output 3D motion data (SMPL H skeleton format) which can be retargeted to game characters in engines like Unity and Unreal Engine.
Does it generate video?
While it includes a renderer to preview the motion as a video, its primary output is mathematical motion data (skeleton rotations/positions), not a standard video file like MP4 (unless you just render the preview).
What hardware do I need?
You need a computer with a CUDA-enabled NVIDIA GPU. The full 1B parameter model requires decent VRAM (likely 12GB+), but a “Lite” version (0.46B) is available for less powerful cards.