• [2026/03] Omni-WorldBench is available on arXiv !

Video-based world models have emerged along two dominant paradigms: video generation and 3D reconstruction. However, existing evaluation benchmarks either focus narrowly on visual fidelity and text–video alignment for generative models, or rely on static 3D reconstruction metrics that fundamentally neglect temporal dynamics. We argue that the future of world modeling lies in 4D generation, which jointly models spatial structure and temporal evolution. In this paradigm, the core capability is interactive response: the ability to faithfully reflect how interaction actions drive state transitions across space and time. Yet no existing benchmark systematically evaluates this critical dimension. To address this gap, we propose Omni-WorldBench, a comprehensive benchmark specifically designed to evaluate the interactive response capabilities of world models in 4D settings. Omni-WorldBench comprises two key components: Omni-WorldSuite, a systematic prompt suite spanning diverse interaction levels and scene types; and Omni-Metrics, an agent-based evaluation framework that quantifies world modeling capabilities by measuring the causal impact of interaction actions on both final outcomes and intermediate state evolution trajectories. We conduct extensive evaluations of 18 representative world models across multiple paradigms. Our analysis reveals critical limitations of current world models in interactive response, providing actionable insights for future research. Omni-WorldBench will be publicly released to foster progress in interactive 4D world modeling.

Prompt: A baseball player, standing on the field, throws a baseball as high and as far as he can with all his might.

Prompt: A robotic arm with a black gripper hovers above a white tabletop displaying various packaged foods (including a plastic bag of bread and a bag of snacks). The background shows shelves and a metal grid structure; the robotic arm then grasps a bag of potato chips and places it into the blue shopping basket on the right.

Prompt: Camera View Trajectory-Forward: The camera glides steadily forward along an ancient library corridor, flanked by towering bookshelves.

Prompt: Camera View Trajectory-Pan Left: Turning left in the center of the basketball court, looking at the surrounding spectator seats.

If you find our repo useful for your research, please consider citing our paper:

@article{wu2026omniworldbenchcomprehensiveinteractioncentricevaluation,
title={Omni-WorldBench: Towards a Comprehensive Interaction-Centric Evaluation for World Models},
author={Meiqi Wu and Zhixin Cai and Fufangchen Zhao and Xiaokun Feng and Rujing Dang and Bingze Song and Ruitian Tian and Jiashu Zhu and Jiachen Lei and Hao Dou and Jing Tang and Lei Sun and Jiahong Wu and Xiangxiang Chu and Zeming Liu and Kaiqi Huang},
journal={arXiv preprint arXiv:2603.22212},
year={2026}
}