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OpenWorldLib: A Unified Codebase and Definition of Advanced World Models

DataFlow Team, Bohan Zeng, Daili Hua, Kaixin Zhu, Yifan Dai, Bozhou Li, Yuran Wang, Chengzhuo Tong, Yifan Yang, Mingkun Chang, Jianbin Zhao, Zhou Liu, Hao Liang, Xiaochen Ma, Ruichuan An, Junbo Niu, Zimo Meng, Tianyi Bai, Meiyi Qiang, Huanyao Zhang, Zhiyou Xiao, Tianyu Guo

2026-04-07

OpenWorldLib: A Unified Codebase and Definition of Advanced World Models

Summary

This paper introduces OpenWorldLib, a new tool designed to help researchers work with 'world models' in artificial intelligence. It aims to provide a common way to build, test, and share these models, which are designed to help AI understand and interact with the world around it.

What's the problem?

Currently, there's no single, agreed-upon definition of what a 'world model' actually *is*. This makes it hard for different researchers to compare their work or build upon each other's ideas. Different models also tackle different tasks, making it difficult to combine them or reuse parts of them efficiently. Essentially, the field lacked standardization and a clear understanding of the core components of these advanced AI systems.

What's the solution?

The authors propose a definition of a world model as an AI system focused on understanding the world through perception, interaction, and memory. They then break down the essential skills these models need. More importantly, they created OpenWorldLib, a framework that lets researchers plug in different world models and use them together in a standardized way. This allows for easier testing, sharing, and combining of different approaches to building AI that understands the world.

Why it matters?

This work is important because it provides a foundation for more rapid progress in the field of AI. By creating a common definition and a shared framework, OpenWorldLib will help researchers collaborate more effectively and build more sophisticated AI systems that can truly understand and interact with the complex world around us. It's a step towards AI that can plan, reason, and learn in a more human-like way.

Abstract

World models have garnered significant attention as a promising research direction in artificial intelligence, yet a clear and unified definition remains lacking. In this paper, we introduce OpenWorldLib, a comprehensive and standardized inference framework for Advanced World Models. Drawing on the evolution of world models, we propose a clear definition: a world model is a model or framework centered on perception, equipped with interaction and long-term memory capabilities, for understanding and predicting the complex world. We further systematically categorize the essential capabilities of world models. Based on this definition, OpenWorldLib integrates models across different tasks within a unified framework, enabling efficient reuse and collaborative inference. Finally, we present additional reflections and analyses on potential future directions for world model research. Code link: https://github.com/OpenDCAI/OpenWorldLib