UItron: Foundational GUI Agent with Advanced Perception and Planning

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Main Authors: Zeng, Zhixiong, Huang, Jing, Zheng, Liming, Han, Wenkang, Zhong, Yufeng, Chen, Lei, Yang, Longrong, Chu, Yingjie, He, Yuzhi, Ma, Lin
Format: Preprint
Published: 2025
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author Zeng, Zhixiong
Huang, Jing
Zheng, Liming
Han, Wenkang
Zhong, Yufeng
Chen, Lei
Yang, Longrong
Chu, Yingjie
He, Yuzhi
Ma, Lin
author_facet Zeng, Zhixiong
Huang, Jing
Zheng, Liming
Han, Wenkang
Zhong, Yufeng
Chen, Lei
Yang, Longrong
Chu, Yingjie
He, Yuzhi
Ma, Lin
contents GUI agent aims to enable automated operations on Mobile/PC devices, which is an important task toward achieving artificial general intelligence. The rapid advancement of VLMs accelerates the development of GUI agents, owing to their powerful capabilities in visual understanding and task planning. However, building a GUI agent remains a challenging task due to the scarcity of operation trajectories, the availability of interactive infrastructure, and the limitation of initial capabilities in foundation models. In this work, we introduce UItron, an open-source foundational model for automatic GUI agents, featuring advanced GUI perception, grounding, and planning capabilities. UItron highlights the necessity of systemic data engineering and interactive infrastructure as foundational components for advancing GUI agent development. It not only systematically studies a series of data engineering strategies to enhance training effects, but also establishes an interactive environment connecting both Mobile and PC devices. In training, UItron adopts supervised finetuning over perception and planning tasks in various GUI scenarios, and then develop a curriculum reinforcement learning framework to enable complex reasoning and exploration for online environments. As a result, UItron achieves superior performance in benchmarks of GUI perception, grounding, and planning. In particular, UItron highlights the interaction proficiency with top-tier Chinese mobile APPs, as we identified a general lack of Chinese capabilities even in state-of-the-art solutions. To this end, we manually collect over one million steps of operation trajectories across the top 100 most popular apps, and build the offline and online agent evaluation environments. Experimental results demonstrate that UItron achieves significant progress in Chinese app scenarios, propelling GUI agents one step closer to real-world application.
format Preprint
id arxiv_https___arxiv_org_abs_2508_21767
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle UItron: Foundational GUI Agent with Advanced Perception and Planning
Zeng, Zhixiong
Huang, Jing
Zheng, Liming
Han, Wenkang
Zhong, Yufeng
Chen, Lei
Yang, Longrong
Chu, Yingjie
He, Yuzhi
Ma, Lin
Computer Vision and Pattern Recognition
GUI agent aims to enable automated operations on Mobile/PC devices, which is an important task toward achieving artificial general intelligence. The rapid advancement of VLMs accelerates the development of GUI agents, owing to their powerful capabilities in visual understanding and task planning. However, building a GUI agent remains a challenging task due to the scarcity of operation trajectories, the availability of interactive infrastructure, and the limitation of initial capabilities in foundation models. In this work, we introduce UItron, an open-source foundational model for automatic GUI agents, featuring advanced GUI perception, grounding, and planning capabilities. UItron highlights the necessity of systemic data engineering and interactive infrastructure as foundational components for advancing GUI agent development. It not only systematically studies a series of data engineering strategies to enhance training effects, but also establishes an interactive environment connecting both Mobile and PC devices. In training, UItron adopts supervised finetuning over perception and planning tasks in various GUI scenarios, and then develop a curriculum reinforcement learning framework to enable complex reasoning and exploration for online environments. As a result, UItron achieves superior performance in benchmarks of GUI perception, grounding, and planning. In particular, UItron highlights the interaction proficiency with top-tier Chinese mobile APPs, as we identified a general lack of Chinese capabilities even in state-of-the-art solutions. To this end, we manually collect over one million steps of operation trajectories across the top 100 most popular apps, and build the offline and online agent evaluation environments. Experimental results demonstrate that UItron achieves significant progress in Chinese app scenarios, propelling GUI agents one step closer to real-world application.
title UItron: Foundational GUI Agent with Advanced Perception and Planning
topic Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2508.21767