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Video-Reason/
VBVR-LTX2.3-diffsynth

Name: VBVR-LTX2.3-diffsynth
Rating: 2.5 (59 reviews)

diffusers

image-to-video

Video-Reason/VBVR-Dataset

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VBVR: A Very Big Video Reasoning Suite

Code

arXiv

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.

Models Zoo

Model	Base Architecture	Other Remarks
VBVR-Wan2.1	Wan2.1-I2V-14B-720P	Diffusers format
VBVR-Wan2.2	Wan2.2-I2V-A14B	Diffusers format
VBVR-Wan2.1-diffsynth	Wan2.1-I2V-14B-720P	DiffSynth LoRA format
VBVR-Wan2.2-diffsynth	Wan2.2-I2V-A14B	DiffSynth LoRA format
VBVR-LTX2.3-diffsynth	LTX-2.3	DiffSynth LoRA format

Release Information

VBVR-LTX2.3 is trained from LTX-2.3 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 (Diffusers format), VBVR-Wan2.1-diffsynth (DiffSynth LoRA format), and 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).

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

QuickStart

Inference

For running inference, please refer to the official guide 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}
}

Video-Reason/VBVR-LTX2.3-diffsynth