Fan Sicheng （范思诚）

Master's Student · Fudan University

Technical Lead @ WebAgentLab · Researcher @ Qwen, Alibaba

Master's student at Fudan University, researching Computer-Use Agents and Reinforcement Learning. Serving as Technical Lead at WebAgentLab and Researcher at Qwen, Alibaba. Dedicated to building intelligent agent systems capable of autonomously operating graphical interfaces, with research published at top-tier conferences including CVPR and ICLR.

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Publications

Qwen-CUA 2026

Qwen-CUA: Native Computer Use for (almost) Everything

Dunjie Lu, Shuai Bai, Tianyi Bai, Sicheng Fan, Chang Gao, Jian Guan, Feng Hu, Mianqiu Huang, Xingyang Huang, Yizhen Jiang, Yuheng Jing, Dehui Kong, Ning Li, Dayiheng Liu, Shixuan Liu, Zheng Liu, Que Shen, Bowen Wang, Junli Wang, Chencan Wu, Rui Xie

Technical Report, 2026

Computer-Use AgentGUI AgentReinforcement LearningQwen

arXiv

EvoCUA-1.5 2026

EvoCUA-1.5: Online Reinforcement Learning for Multi-turn Computer-Use Agents

Mianqiu Huang, Taofeng Xue, Chong Peng, Jinrui Ding, Sicheng Fan, Jiale Hong, Yufei Gao, Xiaocheng Zhang, Linsen Guo, Xin Yang, Dengchang Zhao, Yuchen Xie, Peng Pei, Xunliang Xie, Xipeng Qiu

Technical Report, 2026

Computer-Use AgentOnline RLGUI AgentLongCat

arXiv

CVPR 2026

WebChain: A Large-Scale Human-Annotated Dataset of Real-World Web Interaction Traces

Sicheng Fan, Rui Wan, Yifei Leng, Gaoning Liang, Li Ling, Yanyi Shang, Dehan Kong

IEEE/CVF Conference on Computer Vision and Pattern Recognition, 2026

GUI AgentDatasetWeb AgentMulti-modal

arXiv Code

ICLR 2026

WebFactory: Automated Compression of Foundational Language Intelligence into Grounded Web Agents

Sicheng Fan, Qingyun Shi, Shengze Xu, Shengbo Cai, Tieyong Zeng, Li Ling, Yanyi Shang, Dehan Kong

International Conference on Learning Representations, 2026

GUI AgentReinforcement LearningLLMSynthetic Data

arXiv Code

Education

Fudan University

Master's Student

Sep 2024 — Present

Research: Computer-Use Agent and Reinforcement Learning

Fudan University

B.S. in Electronic Information Science and Technology

Sep 2020 — Jun 2024

Outstanding Graduate of Shanghai and Wangdao Scholar at Fudan University

Experience

Qwen Foundation Model Team, Alibaba

Algorithm Researcher

Jun 2026 — Present

Researching foundation models and Computer-Use Agents

WebAgentLab

Technical Lead

2025 — Present

Leading technical direction and advancing the open-source GUI agent ecosystem

LongCat Foundation Model Team, Meituan

AI Research Intern

Apr 2026 — Jun 2026

Worked on Computer-Use Agents and EvoCUA-1.5

iMeanAI

GUI Agent Researcher

Jun 2024 — Feb 2026

Led the development of WebChain and WebFactory

News

Aug 2026Released the Qwen-CUA technical report and Qwen 3.8

Jul 2026Released the EvoCUA-1.5 technical report

Jun 2026Became an Algorithm Researcher in the Qwen foundation model team at Alibaba

Apr 2026Joined Meituan's LongCat foundation model team

Feb 2026Paper "WebChain" accepted at CVPR 2026 (first author)

Jan 2026Paper "WebFactory" accepted at ICLR 2026 (first author)

2025Became Technical Lead at WebAgentLab community

Sep 2024Enrolled in Master's program at Fudan University

Jun 2024Joined iMeanAI as a GUI Agent Researcher

Jun 2024Graduated from Fudan University with a Bachelor's degree

Sep 2020Enrolled in Bachelor's program at Fudan University

Research Interests

Computer-Use AgentWeb AgentGUI AgentReinforcement LearningLLM TrainingLLM Fine-tuning

Contact

sicheng_fan@foxmail.com

sicheng-fan