Fenghai Li profile picture

Hello! My name is Fenghai Li. I am a junior majoring in Computer Science and Mathematics at the University of Illinois Urbana-Champaign (UIUC). Currently, I am working as a Research Intern at the U Lab with Prof. Jiaxuan You. My interests include language agents, their applications in fields such as finance and research, and designing better user interfaces for them.

Open Source Projects

Tiny Scientist

Core Contributor

A lightweight framework for building research agents designed for developers.

Live Trade Bench

Core Contributor

Live evaluation of AI trading agents in real time across US stocks and Polymarkets.

Publications

Towards Conceptual Direct Manipulation: Drag-Based Research Ideation, Evaluation and Evolution

Zijian Ding, Fenghai Li, Haofei Yu, and Joel Chan

Adjunct Proceedings of the 2025 Annual ACM Symposium on User Interface Software and Technology (UIST'25 Poster), 2025

TinyScientist: An Interactive, Extensible, and Controllable Framework for Building Research Agents

Haofei Yu*, Keyang Xuan*, Fenghai Li*, Kunlun Zhu, Zijie Lei, Jiaxun Zhang, Ziheng Qi, Kyle Richardson, and Jiaxuan You (*Core Contributors)

The 2025 Conference on Empirical Methods in Natural Language Processing (EMNLP'25), System Demonstrations

LiveTradeBench: Seeking Real-World Alpha with Large Language Models

Haofei Yu, Fenghai Li, and Jiaxuan You

Preprint 2025

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