Jiaxuan You
UIUC assistant professor who leads U Lab, the group that maintains the LLMRouter routing library
- Assistant Professor, Siebel School of Computing and Data Science; leads U Lab, University of Illinois Urbana-Champaign21
Jiaxuan You is an Assistant Professor in the Siebel School of Computing and Data Science at the University of Illinois Urbana-Champaign, where You leads U Lab. You is the senior author of the LLMRouter paper, which describes the open-source library for routing queries among large language models that U Lab maintains. You's research focuses on AI agents, building on work in graph learning, reasoning, planning and LLM systems.1235
Career
You received a PhD in computer science from Stanford University in 2021, advised by Jure Leskovec. From 2021 to 2023 You was a core founding member of Kumo AI, building a graph learning predictive system for relational databases, and You later worked at NVIDIA as a Senior Research Scientist on LLM pretraining and post-training.12
Since 2024 You has been an assistant professor in the Siebel School of Computing and Data Science at UIUC, where You leads U Lab. Courses listed on the school's profile include data mining principles and a topics course on LLM agents.21
Research
You describes research thrusts in self-evolving, research, social, recommender, persuasion and tutor agents, grounded in graph learning, reasoning and planning and in LLM systems, memory and retrieval. A line of the group's work studies routing among language models, from GraphRouter (2024) and GraphPlanner (2026) to the LLMRouter library and paper (2026).1673
Work
LLMRouterOpen-source code
Senior author of the LLMRouter paper (2026), which presents the library maintained in U Lab's GitHub organization along with the xRouteBench routing benchmark.345
GraphRouter (external site: arxiv.org)Published research
Co-author with Tao Feng and Yanzhen Shen of "GraphRouter: A Graph-based Router for LLM Selections" (2024).6
Design Space for Graph Neural Networks (external site: arxiv.org)Published research
First author, with Rex Ying and Jure Leskovec, of "Design Space for Graph Neural Networks" (2020).8
Career timeline
Nov 2020
Posted "Design Space for Graph Neural Networks" as first author with Rex Ying and Jure Leskovec.8
2021
Received a PhD in computer science from Stanford University.2
2021
Became a core founding member of Kumo AI, a role held until 2023.1
2024
Joined the University of Illinois Urbana-Champaign as an assistant professor.2
Oct 2024
Co-authored GraphRouter, a graph-based router for selecting LLMs.6
Apr 2026
Co-authored GraphPlanner, on graph memory-augmented agentic routing for multi-agent LLMs.7
Aug 2026
Released LLMRouter with U Lab collaborators as the paper's senior author.35
Other documented roles
Roles the sources document but that are not confirmed as current.
Related people
More sourced profiles at the same organization, in the same field, or from the same school.
- David ForsythAlso at University of Illinois Urbana-Champaign
- Binyuan HuiAgents
- Abigail SeeAlso from Stanford
- Xingyao WangAlso at University of Illinois Urbana-Champaign
- Gabe PereyraAgents
- Abubakar AbidAlso from Stanford
- Aaron LefohnAlso at NVIDIA
- Graham NeubigAlso from UIUC
- Albert GuAlso from Stanford
- Alexander AminiAlso at NVIDIA
- Hanlin TangLanguage models
- Ali FarhadiAlso from UIUC
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