---
base_model:
- Wan-AI/Wan2.1-I2V-14B-720P-Diffusers
library_name: diffusers
license: apache-2.0
pipeline_tag: image-to-video
datasets:
- Video-Reason/VBVR-Dataset
---
# VBVR: A Very Big Video Reasoning Suite

<a href="https://video-reason.com" target="_blank">
    <img alt="Project Page" src="https://img.shields.io/badge/Project%20-%20Homepage-4285F4" height="20" />
</a>
<a href="https://github.com/Video-Reason/VBVR-EvalKit" target="_blank">
    <img alt="Code" src="https://img.shields.io/badge/Evaluation_code-VBVR_Bench-100000?style=flat-square&logo=github&logoColor=white" height="20" />
</a>
<a href="https://github.com/Video-Reason/VBVR-Wan2.2" target="_blank">
    <img alt="Code" src="https://img.shields.io/badge/Training_code-VBVR_Wan2.2-100000?style=flat-square&logo=github&logoColor=white" height="20" />
</a>
<a href="https://github.com/Video-Reason/VBVR-DataFactory" target="_blank">
    <img alt="Code" src="https://img.shields.io/badge/Data_code-VBVR_DataFactory-100000?style=flat-square&logo=github&logoColor=white" height="20" />
</a>
<a href="https://huggingface.co/papers/2602.20159" target="_blank">
    <img alt="arXiv" src="https://img.shields.io/badge/arXiv-VBVR-red?logo=arxiv" height="20" />
</a>
<a href="https://huggingface.co/datasets/Video-Reason/VBVR-Dataset" target="_blank">
    <img alt="Dataset" src="https://img.shields.io/badge/%F0%9F%A4%97%20_VBVR_Dataset-Data-ffc107?color=ffc107&logoColor=white" height="20" />
</a>
<a href="https://huggingface.co/datasets/Video-Reason/VBVR-Bench-Data" target="_blank">
    <img alt="Bench Data" src="https://img.shields.io/badge/%F0%9F%A4%97%20_VBVR_Bench-Data-ffc107?color=ffc107&logoColor=white" height="20" />
</a>
<a href="https://huggingface.co/spaces/Video-Reason/VBVR-Bench-Leaderboard" target="_blank">
    <img alt="Leaderboard" src="https://img.shields.io/badge/%F0%9F%A4%97%20_VBVR_Bench-Leaderboard-ffc107?color=ffc107&logoColor=white" height="20" />
</a>

## Overview
Video reasoning grounds intelligence in spatiotemporally consistent visual environments that go beyond what text can naturally capture, 
enabling intuitive reasoning over motion, interaction, and causality. Rapid progress in video models has focused primarily on visual quality. 
Systematically studying video reasoning and its scaling behavior suffers from a lack of video reasoning (training) data. 

To address this gap, we introduce the Very Big Video Reasoning (VBVR) Dataset, an unprecedentedly large-scale resource spanning 200 curated reasoning tasks 
and over one million video clips—approximately three orders of magnitude larger than existing datasets. We further present VBVR-Bench, 
a verifiable evaluation framework that moves beyond model-based judging by incorporating rule-based, human-aligned scorers, 
enabling reproducible and interpretable diagnosis of video reasoning capabilities. 

Leveraging the VBVR suite, we conduct one of the first large-scale scaling studies of video reasoning and observe early signs of emergent generalization 
to unseen reasoning tasks. **Together, VBVR lays a foundation for the next stage of research in generalizable video reasoning.**

The model was presented in the paper [A Very Big Video Reasoning Suite](https://huggingface.co/papers/2602.20159).

## Models Zoo

| Model | Base Architecture | Other Remarks |
|-------|-------------------|---------------|
| [VBVR-Wan2.1](https://huggingface.co/Video-Reason/VBVR-Wan2.1) | Wan2.1-I2V-14B-720P | Diffusers format |
| [VBVR-Wan2.2](https://huggingface.co/Video-Reason/VBVR-Wan2.2) | Wan2.2-I2V-A14B | Diffusers format |
| [**VBVR-Wan2.1-diffsynth**](https://huggingface.co/Video-Reason/VBVR-Wan2.1-diffsynth) | Wan2.1-I2V-14B-720P | DiffSynth LoRA format |
| [VBVR-Wan2.2-diffsynth](https://huggingface.co/Video-Reason/VBVR-Wan2.2-diffsynth) | Wan2.2-I2V-A14B | DiffSynth LoRA format |
| [VBVR-LTX2.3-diffsynth](https://huggingface.co/Video-Reason/VBVR-LTX2.3-diffsynth) | LTX-Video-2.3 | DiffSynth LoRA format |

## Release Information
VBVR-Wan2.1 is trained from Wan2.1-I2V-14B-720P without architectural modifications, as the goal of VBVR is to *investigate data scaling behavior* and provide *strong baseline models* for the video reasoning research community. Leveraging the VBVR-Dataset, which constitutes one of the largest video reasoning datasets to date, the VBVR model family achieved highest scores on VBVR-Bench.

In this release, we present 
[**VBVR-Wan2.1**](https://huggingface.co/Video-Reason/VBVR-Wan2.1) (Diffusers format),
[**VBVR-Wan2.1-diffsynth**](https://huggingface.co/Video-Reason/VBVR-Wan2.1-diffsynth) (DiffSynth LoRA format), and
[**VBVR-LTX2.3-diffsynth**](https://huggingface.co/Video-Reason/VBVR-LTX2.3-diffsynth) (DiffSynth LoRA format; Diffusers does not yet support LTX-Video-2.3, so only the DiffSynth LoRA format is released for this model).

<table>
    <tr>
      <th>Model</th>
      <th>Overall</th>
      <th>ID</th>
      <th>ID-Abst.</th>
      <th>ID-Know.</th>
      <th>ID-Perc.</th>
      <th>ID-Spat.</th>
      <th>ID-Trans.</th>
      <th>OOD</th>
      <th>OOD-Abst.</th>
      <th>OOD-Know.</th>
      <th>OOD-Perc.</th>
      <th>OOD-Spat.</th>
      <th>OOD-Trans.</th>
    </tr>
  <tbody>
    <tr>
      <td><strong>Human</strong></td>
      <td>0.974</td><td>0.960</td><td>0.919</td><td>0.956</td><td>1.00</td><td>0.95</td><td>1.00</td>
      <td>0.988</td><td>1.00</td><td>1.00</td><td>0.990</td><td>1.00</td><td>0.970</td>
    </tr>
    <tr style="background:#F2F0EF;font-weight:700;text-align:center;">
      <td colspan="14"><em>Open-source Models</em></td>
    </tr>
    <tr>
      <td>CogVideoX1.5-5B-I2V</td>
      <td>0.273</td><td>0.283</td><td>0.241</td><td>0.328</td><td>0.257</td><td>0.328</td><td>0.305</td>
      <td>0.262</td><td><u>0.281</u></td><td>0.235</td><td>0.250</td><td><strong>0.254</strong></td><td>0.282</td>
    </tr>
    <tr>
      <td>HunyuanVideo-I2V</td>
      <td>0.273</td><td>0.280</td><td>0.207</td><td>0.357</td><td>0.293</td><td>0.280</td><td><u>0.316</u></td>
      <td>0.265</td><td>0.175</td><td><strong>0.369</strong></td><td>0.290</td><td><u>0.253</u></td><td>0.250</td>
    </tr>
    <tr>
      <td><strong>Wan2.2-I2V-A14B</strong></td>
      <td><strong>0.371</strong></td><td><strong>0.412</strong></td><td><strong>0.430</strong></td>
      <td><strong>0.382</strong></td><td><strong>0.415</strong></td><td><strong>0.404</strong></td>
      <td><strong>0.419</strong></td><td><strong>0.329</strong></td>
      <td><strong>0.405</strong></td><td>0.308</td><td><strong>0.343</strong></td>
      <td>0.236</td><td><u>0.307</u></td>
    </tr>
    <tr>
      <td><u>LTX-2</u></td>
      <td><u>0.313</u></td><td><u>0.329</u></td><td><u>0.316</u></td>
      <td><u>0.362</u></td><td><u>0.326</u></td><td><u>0.340</u></td>
      <td>0.306</td><td><u>0.297</u></td>
      <td>0.244</td><td><u>0.337</u></td><td><u>0.317</u></td>
      <td>0.231</td><td><strong>0.311</strong></td>
    </tr>
    <tr style="background:#F2F0EF;font-weight:700;text-align:center;">
      <td colspan="14"><em>Proprietary Models</em></td>
    </tr>
    <tr>
      <td><u>Seedance 2.0</u></td>
      <td><u>0.544</u></td><td><strong>0.570</strong></td><td>0.593</td><td><u>0.498</u></td><td><strong>0.618</strong></td><td><u>0.514</u></td><td><strong>0.602</strong></td>
      <td><u>0.517</u></td><td><strong>0.643</strong></td><td>0.398</td><td><u>0.492</u></td><td>0.427</td><td><strong>0.556</strong></td>
    </tr>
    <tr>
      <td>Runway Gen-4 Turbo</td>
      <td>0.403</td><td>0.392</td><td>0.396</td><td>0.409</td><td>0.429</td><td>0.341</td><td>0.363</td>
      <td>0.414</td><td>0.515</td><td><u>0.429</u></td><td>0.419</td><td>0.327</td><td>0.373</td>
    </tr>
    <tr>
      <td><strong>Sora 2</strong></td>
      <td><strong>0.546</strong></td><td><u>0.569</u></td><td><u>0.602</u></td>
      <td>0.477</td><td><u>0.581</u></td><td><strong>0.572</strong></td>
      <td><u>0.597</u></td><td><strong>0.523</strong></td>
      <td><u>0.546</u></td><td><strong>0.472</strong></td><td><strong>0.525</strong></td>
      <td><strong>0.462</strong></td><td><u>0.546</u></td>
    </tr>
    <tr>
      <td>Kling 2.6</td>
      <td>0.369</td><td>0.408</td><td>0.465</td><td>0.323</td><td>0.375</td><td>0.347</td><td>0.519</td>
      <td>0.330</td><td>0.528</td><td>0.135</td><td>0.272</td><td>0.356</td><td>0.359</td>
    </tr>
    <tr>
      <td>Veo 3.1</td>
      <td>0.480</td><td>0.531</td><td><strong>0.611</strong></td>
      <td><strong>0.503</strong></td><td>0.520</td><td>0.444</td>
      <td>0.510</td><td>0.429</td>
      <td><u>0.577</u></td><td>0.277</td><td>0.420</td>
      <td><u>0.441</u></td><td>0.404</td>
    </tr>
    <tr style="background:#F2F0EF;font-weight:700;text-align:center;">
      <td colspan="14"><em>Data Scaling Strong Baseline</em></td>
    </tr>
    <tr>
      <td><strong>VBVR-LTX2.3</strong></td>
      <td>0.516</td><td>0.580</td><td>0.608</td><td>0.631</td><td>0.529</td><td>0.454</td><td>0.680</td>
      <td>0.453</td><td>0.608</td><td>0.577</td><td><u>0.409</u></td><td>0.414</td><td><u>0.388</u></td>
    </tr>
    <tr>
      <td><strong>VBVR-Wan2.1</strong></td>
      <td><u>0.592</u></td><td><u>0.724</u></td><td><u>0.705</u></td><td><u>0.710</u></td><td><u>0.727</u></td><td><u>0.719</u></td><td><u>0.784</u></td>
      <td><u>0.461</u></td><td><u>0.674</u></td><td><strong>0.592</strong></td><td>0.387</td><td><u>0.461</u></td><td>0.387</td>
    </tr>
    <tr>
      <td><strong>VBVR-Wan2.2</strong></td>
      <td><strong>0.685</strong></td><td><strong>0.760</strong></td><td><strong>0.724</strong></td>
      <td><strong>0.750</strong></td><td><strong>0.782</strong></td><td><strong>0.745</strong></td>
      <td><strong>0.833</strong></td><td><strong>0.610</strong></td>
      <td><strong>0.768</strong></td><td><u>0.572</u></td><td><strong>0.547</strong></td>
      <td><strong>0.618</strong></td><td><strong>0.615</strong></td>
    </tr>
  </tbody>
</table>

## QuickStart

### Inference
For running inference, please refer to the [**official guide**](https://github.com/Video-Reason/VBVR-Wan2.2?tab=readme-ov-file#wan21-inference) in the VBVR-Wan2.2 GitHub repository.
This repository contains the latest instructions, configurations, and examples for performing inference with the VBVR family models.

## Citation

```bibtex
@article{vbvr2026,
  title   = {A Very Big Video Reasoning Suite},
  author  = {Wang, Maijunxian and Wang, Ruisi and Lin, Juyi and Ji, Ran and
             Wiedemer, Thadd{\"a}us and Gao, Qingying and Luo, Dezhi and
             Qian, Yaoyao and Huang, Lianyu and Hong, Zelong and Ge, Jiahui and
             Ma, Qianli and He, Hang and Zhou, Yifan and Guo, Lingzi and
             Mei, Lantao and Li, Jiachen and Xing, Hanwen and Zhao, Tianqi and
             Yu, Fengyuan and Xiao, Weihang and Jiao, Yizheng and
             Hou, Jianheng and Zhang, Danyang and Xu, Pengcheng and
             Zhong, Boyang and Zhao, Zehong and Fang, Gaoyun and Kitaoka, John and
             Xu, Yile and Xu, Hua bureau and Blacutt, Kenton and Nguyen, Tin and
             Song, Siyuan and Sun, Haoran and Wen, Shaoyue and He, Linyang and
             Wang, Runming and Wang, Yanzhi and Yang, Mengyue and Ma, Ziqiao and
             Milli{\`e}re, Rapha{\"e}l and Shi, Freda and Vasconcelos, Nuno and
             Khashabi, Daniel and Yuille, Alan and Du, Yilun and Liu, Ziming and
             Lin, Dahua and Liu, Ziwei and Kumar, Vikash and Li, Yijiang and
             Yang, Lei and Cai, Zhongang and Deng, Hokin},
  journal = {arXiv preprint arXiv:2602.20159},
  year    = {2026},
  url     = {https://arxiv.org/abs/2602.20159}
}
```