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Open-weight model · Text to video

DiffusionART-HunyuanVideo-7-2-1

by Zhenglin Wan vanzl/DiffusionART-HunyuanVideo-7-2-1

DiffusionART-HunyuanVideo-7-2-1 is an open-weight model for text to video from Zhenglin Wan, released under other. It has 12.8B parameters. At 16-bit it needs about 30.8 GB of GPU memory, which fits on 1x MI300X from $1.85 an hour, at the lowest prices in the SAVRN Index.

HunyuanVideo-13B fine-tuned with DiffusionART, using temporal alignment, visual quality and motion quality rewards at 7:2:1, with a pretrained-reference MSE regularizer (β = 0.1).

Parameters12.8B
Context—
Weights51.3 GB
Licenseother
AccessOpen weights
Monthly Downloads—

Runs On

What it takes to serve DiffusionART-HunyuanVideo-7-2-1 (12.8B parameters): the memory its weights need at each precision, and the cheapest way to rent enough data-center GPUs to hold them.

PrecisionWeightsMemory neededCheapest setupPer hourAlso fits
16-bit 25.6 GB 30.8 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 12.8 GB 15.4 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 6.4 GB 7.7 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00

Memory is the weights at that precision plus 20% for the runtime and a short context; a long context needs more. Prices are the lowest on-demand hourly rates in the SAVRN Index, read Oct 18, 2026.

DiffusionART-HunyuanVideo-7-2-1 on every accelerator the SAVRN Index prices, at every precision

Model Card

HunyuanVideo-13B fine-tuned with DiffusionART, using temporal alignment, visual quality and motion quality rewards at 7:2:1, with a pretrained-reference MSE regularizer (β = 0.1). This repository contains the full transformer weights, not a LoRA or a complete pipeline. The inference entry below downloads the base model's VAE and text encoders automatically. Use the included infer.py. Expand the setup once, then run the example from the same directory. Linux, Python 3.12, a CUDA 12.1-compatible driver and toolkit (nvcc), and approximately 100 GiB of available GPU memory and disk space for the verified default path. The installer uses a pinned public DanceGRPO inference runtime. The fixed…

Excerpt from the card by Zhenglin Wan, licensed other.

Identity and Version

Repository
vanzl/DiffusionART-HunyuanVideo-7-2-1
Publisher
Zhenglin Wan
Task
Text to video
Modality
Video
Library
diffusers
Parameters
12.8B parameters
Languages
Not stated by the source
Revision
c2ce1cadef12a730c43f26a825a575917005edcf
First published
2026-10-08
Last updated
2026-10-12

Files and Weights

35 files, 51.3 GB in total. The weights are 12 files totalling 51.3 GB in safetensors.

Weights12 files · 51.3 GB
Configuration5 files · 153.4 KB
Documentation3 files · 39.4 KB
Other14 files · 11.9 MB
Repository1 file · 2.3 KB
Every file
FileTypeSizeSHA-256
transformer/diffusion_pytorch_model-00001-of-00012.safetensorsWeights4.5 GB 690286ec1b94
transformer/diffusion_pytorch_model-00002-of-00012.safetensorsWeights4.5 GB 70afbae85545
transformer/diffusion_pytorch_model-00003-of-00012.safetensorsWeights4.5 GB 305018cde078
transformer/diffusion_pytorch_model-00004-of-00012.safetensorsWeights4.5 GB e55c68eba589
transformer/diffusion_pytorch_model-00005-of-00012.safetensorsWeights4.5 GB 75c2ce3be50c
transformer/diffusion_pytorch_model-00006-of-00012.safetensorsWeights4.5 GB b4aff69af156
transformer/diffusion_pytorch_model-00007-of-00012.safetensorsWeights4.5 GB 4b0e316728bd
transformer/diffusion_pytorch_model-00008-of-00012.safetensorsWeights4.5 GB 21ad0f2955b9
transformer/diffusion_pytorch_model-00009-of-00012.safetensorsWeights4.6 GB c000f2bdfb30
transformer/diffusion_pytorch_model-00010-of-00012.safetensorsWeights4.6 GB 364f610a7f04
transformer/diffusion_pytorch_model-00011-of-00012.safetensorsWeights4.5 GB 825edf0374dd
transformer/diffusion_pytorch_model-00012-of-00012.safetensorsWeights1.6 GB 599df789da30
examples/manifest.jsonConfiguration3.9 KB —
infer.pyConfiguration8.7 KB —
release.jsonConfiguration7.0 KB —
transformer/config.jsonConfiguration728 B —
transformer/diffusion_pytorch_model.safetensors.index.jsonConfiguration133.1 KB —
LICENSE.txtDocumentation15.3 KB —
NoticeDocumentation19.0 KB —
README.mdDocumentation5.1 KB —
examples/00100-diffusionart.mp4Other610.2 KB 961b17cb9eb6
examples/00100-pretrained.mp4Other346.6 KB b4dad71e3119
examples/00106-diffusionart.mp4Other1.5 MB 333f736b1910
examples/00106-pretrained.mp4Other1.1 MB e46c85cec8c7
examples/00113-diffusionart.mp4Other1.7 MB 211811a4ed7a
examples/00113-pretrained.mp4Other721.8 KB 4c484efff6af
examples/00129-diffusionart.mp4Other483.3 KB 7c8a32ca6471
examples/00129-pretrained.mp4Other271.2 KB f8ce3af9dceb
examples/00139-diffusionart.mp4Other2.0 MB 751614effb65
examples/00139-pretrained.mp4Other2.3 MB 10568caf9e89
examples/00148-diffusionart.mp4Other816.7 KB f0837beb2cd5
examples/00148-pretrained.mp4Other118.2 KB dea5ccceca4c
install.shOther3.4 KB —
requirements-inference.txtOther890 B —
.gitattributesRepository2.3 KB —

License and Download

License
other
Access
Open weights, no gate
Download size
51.3 GB
Download from Zhenglin Wan

Released by Zhenglin Wan through its official repository on Hugging Face. Read the license.

Built From

  • Derived from hunyuanvideo-community/HunyuanVideo
  • Described by arXiv:2610.12572

Memory Requirements

PrecisionWeights in memory
As published51.3 GB
16-bit25.6 GB
8-bit12.8 GB
4-bit6.4 GB

Weights only, from the published parameter count; the key-value cache and runtime add to this.

Questions About DiffusionART-HunyuanVideo-7-2-1

How much GPU memory does DiffusionART-HunyuanVideo-7-2-1 need?

About 30.8 GB at 16-bit and 7.7 GB at 4-bit: the weights (12.8B parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run DiffusionART-HunyuanVideo-7-2-1 on?

At 16-bit, 1x MI300X from $1.85 an hour; at 4-bit, 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.

What license is DiffusionART-HunyuanVideo-7-2-1 released under?

other, as its publisher declares it. Read the license text before commercial use.

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