| --- |
| language: |
| - en |
| - zh |
| library_name: diffusers |
| license: mit |
| pipeline_tag: text-to-video |
| tags: |
| - transformers |
| - diffusers |
| - image-to-video |
| - video-continuation |
| --- |
| |
| ARACHNE-X-ULTRA |
| <div align="center"> |
| </div> |
| <hr> |
| <div align="center"> |
| <a href='https://nullxes.com/arachne-x-ultra'><img src='https://img.shields.io/badge/Project-Page-green'></a> |
| <a href='https://huggingface.co/papers/2510.22200'><img src='https://img.shields.io/badge/Paper-HuggingFace-red'></a> |
| <a href='https://huggingface.co/nullxes/ARACHNE-X-ULTRA'><img src='https://img.shields.io/badge/%F0%9F%A4%97%20Hugging%20Face-Model-blue'></a> |
| <a href='mailto:ceo@nullxes.com'><img src='https://img.shields.io/badge/Contact-ceo@nullxes.com-lightgrey'></a> |
| </div> |
| <div align="center"> |
| <a href='https://huggingface.co/nullxes/ARACHNE-X-ULTRA/blob/main/LICENSE'><img src='https://img.shields.io/badge/License-MIT-f5de53?&color=f5de53'></a> |
| </div> |
| Model Introduction |
| We introduce ARACHNE-X-ULTRA, a foundational video generation model with 13.6B parameters, delivering strong performance across Text-to-Video, Image-to-Video, and Video-Continuation generation tasks. It particularly excels in efficient, high-quality long video generation — representing NULLXES's first step toward world models. |
| Key Features |
|
|
| 🕷️ Unified architecture for multiple tasks: ARACHNE-X-ULTRA unifies Text-to-Video, Image-to-Video, and Video-Continuation within a single framework. One model, natively supports all tasks, consistently strong across each. |
| 🕷️ Long video generation: Natively pretrained on Video-Continuation tasks, enabling minutes-long videos without color drift or quality degradation. |
| 🕷️ Efficient inference: Generates 720p, 30fps video within minutes via a coarse-to-fine generation strategy along temporal and spatial axes. Block Sparse Attention further boosts efficiency at high resolutions. |
| 🕷️ Multi-reward RLHF: Powered by multi-reward Group Relative Policy Optimization (GRPO). Comprehensive evaluations on internal and public benchmarks show performance comparable to leading open-source models and the latest commercial solutions. |
|
|
| For full details, refer to the ARACHNE-X-ULTRA Technical Report. |
|
|
| Quick Start |
| Installation |
| shellgit clone https://github.com/nullxes/ARACHNE-X-ULTRA |
| cd ARACHNE-X-ULTRA |
| shellconda create -n arachne python=3.10 |
| conda activate arachne |
|
|
| pip install torch==2.6.0+cu124 torchvision==0.21.0+cu124 torchaudio==2.6.0 --index-url https://download.pytorch.org/whl/cu124 |
|
|
| pip install ninja psutil packaging flash_attn==2.7.4.post1 |
| pip install -r requirements.txt |
| FlashAttention-2 is enabled by default. You can switch to FlashAttention-3 or xformers via model config. |
| Model Download |
| ModelLinkARACHNE-X-ULTRA🤗 Huggingface |
| shellpip install "huggingface_hub[cli]" |
| huggingface-cli download nullxes/ARACHNE-X-ULTRA --local-dir ./weights/ARACHNE-X-ULTRA |
| Inference |
| shell# Text-to-Video (single GPU) |
| torchrun run_demo_text_to_video.py --checkpoint_dir=./weights/ARACHNE-X-ULTRA --enable_compile |
|
|
| # Text-to-Video (multi-GPU) |
| torchrun --nproc_per_node=2 run_demo_text_to_video.py --context_parallel_size=2 --checkpoint_dir=./weights/ARACHNE-X-ULTRA --enable_compile |
|
|
| # Image-to-Video |
| torchrun run_demo_image_to_video.py --checkpoint_dir=./weights/ARACHNE-X-ULTRA --enable_compile |
|
|
| # Video-Continuation |
| torchrun run_demo_video_continuation.py --checkpoint_dir=./weights/ARACHNE-X-ULTRA --enable_compile |
| |
| # Long Video Generation |
| torchrun run_demo_long_video.py --checkpoint_dir=./weights/ARACHNE-X-ULTRA --enable_compile |
|
|
| # Interactive Video Generation |
| torchrun run_demo_interactive_video.py --checkpoint_dir=./weights/ARACHNE-X-ULTRA --enable_compile |
| |
| # Streamlit UI |
| streamlit run ./run_streamlit.py --server.fileWatcherType none --server.headless=false |
|
|
| Evaluation Results |
| Text-to-Video (Internal MOS Benchmark) |
| MOS scoreVeo3PixVerse-V5Wan 2.2-T2V-A14BARACHNE-X-ULTRAAccessibilityProprietaryProprietaryOpen SourceOpen SourceArchitecture——MoEDenseTotal Params——28B13.6BActivated Params——14B13.6BText-Alignment ↑3.993.813.703.76Visual Quality ↑3.233.133.263.25Motion Quality ↑3.863.813.783.74Overall Quality ↑3.483.363.353.38 |
| Image-to-Video (Internal MOS Benchmark) |
| MOS scoreSeedance 1.0Hailuo-02Wan 2.2-I2V-A14BARACHNE-X-ULTRAAccessibilityProprietaryProprietaryOpen SourceOpen SourceArchitecture——MoEDenseTotal Params——28B13.6BActivated Params——14B13.6BImage-Alignment ↑4.124.184.184.04Text-Alignment ↑3.703.853.333.49Visual Quality ↑3.223.183.233.27Motion Quality ↑3.773.803.793.59Overall Quality ↑3.353.273.263.17 |
|
|
| Community Works |
| Community contributions are welcome. Open a PR or file an Issue to have your work listed. |
|
|
| CacheDiT — Fully cached acceleration for ARACHNE-X-ULTRA via DBCache and TaylorSeer, achieving ~1.7× speedup with minimal precision loss. See their example. |
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|
| License |
| Model weights are released under the MIT License. All contributions to this repository are licensed under MIT unless otherwise stated. This license does not grant rights to use NULLXES trademarks or patents. |
| See the LICENSE file for full terms. |
|
|
| Usage Considerations |
| ARACHNE-X-ULTRA has not been specifically designed or comprehensively evaluated for every possible downstream application. Developers should account for known limitations of large generative models, carefully assess accuracy, safety, and fairness before deploying in sensitive or high-risk scenarios, and ensure compliance with all applicable laws and regulations — including data protection, privacy, and content safety requirements. |
|
|
| Citation |
| bibtex@misc{nullxes2025arachnexultra, |
| title={ARACHNE-X-ULTRA Technical Report}, |
| author={NULLXES Team}, |
| year={2026}, |
| eprint={2510.22200}, |
| archivePrefix={arXiv}, |
| primaryClass={cs.CV}, |
| } |
| |
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|
| Contact |
| Questions? Reach out at ceo@nullxes.com |
