The paper introduces the Agent-Editing World Model (AEWM), a new approach that models how reasoning and actions influence future task progress instead of simulating tool responses. AEWM includes an Action Judge that classifies decisions as Critical, Exploratory, or Noisy, and a State Revision mechanism that edits noisy reasoning–action continuations from the same observed history. The integrated system, EditAct, directly updates the underlying state during real execution, leading to significant performance gains across multiple benchmarks and agent backbones.
By Shuang Sun, Guoxin Chen, Fanzhe Meng, Jia Deng, Huatong Song, Jinhao Jiang, Wayne Xin Zhao, Hongteng Xu, Ji-Rong Wen
arXiv:2609.24308v1 Announce Type: new
Abstract: Evaluating world models requires assessing both the quality of the worlds they generate and their consistency and responsiveness under exploration, int...
By Zhiqi Bai, Junai Cai, Yixin Chen, Jingrun Du, Tao Feng, Wei Gong, Siyuan Huang, Xiao Lin, Jiaheng Liu, Jun Luo, Yongzhe Lyu, Liya Ma, Zenan Meng, Lin Qu, Wenbo Su, Jiaming Wang, Qinghe Wang, Shaofei Wang, Yanghai Wang, Zequn Wang, Ziming Wang, Hu Wei, Jiangtao Wu, Ruiqi Wu, Jiaxin Xie, Yuchi Xu, Ze Xu, Chengting Yu, Liangyu Yuan, Gang Zeng, Yawen Zeng, Xingyao Zhang, Zizheng Zhang, Bo Zheng, Jiancheng Zhu, Song-Chun Zhu
arXiv:2610.28827v1 Announce Type: new
Abstract: We present WorldStream, an open-ended 3D world model with three simultaneous capabilities: it extends playable terrain beyond any pre-specified map, ac...
By Xiaoxiao Ma, Weiyang Jin, Yanwen Ma, Haoran Li, Zhixiang Wei, Songchun Zhang, Yaowei Li, Junhao Zhuang, Zeyue Xue, Yuming Li, Zheming Fu, Haoyang Huang, Nan Duan, Feng Zhao
Evaluating world models requires assessing both the quality of the worlds they generate and their consistency and responsiveness under exploration, interaction, and modification. We introduce HappyWor...
MultiWorldBench is a diagnostic Minecraft benchmark designed to test whether independently controlled views can describe a single shared world. It contains 495 case configurations across seven task suites and ten capabilities, such as independent control, cross-view motion, shared-state synchronization, persistence, structural reasoning, concurrent interaction, and delayed revisit. The benchmark evaluates systems like Solaris, Gamma-World, and MineWorld, revealing that none achieve high scores in state persistence, structural consistency, spatial reasoning, or building-identity preservation, and that Gamma-World and Solaris perform best in different subsets of capabilities.
By Zhangbo Xu, Ruoxi Zhang, Rui Hu, Yisong Wang
WorldAct is a framework that transforms static, monolithic 3D worlds generated by systems like Marble into editable, interaction‑ready scenes. It employs a multimodal agent to decompose the scene, identify actionable objects, reconstruct object‑level meshes, and inpaint the remaining background. The resulting scenes allow object‑level editing, collision‑aware manipulation, and embodied task execution while maintaining global coherence.
By Jichen Hu, Jiawei Guo, Jiazhong Cen, Chen Yang, Sikuang Li, Wei Shen