Zhuohan Li
Zhuohan Li is an AI systems builder whose work includes vLLM, an open-source engine for serving large language models with PagedAttention. He earned a computer science B.S. at Peking University in 2019 and a Ph.D. at UC Berkeley in 2024 under Ion Stoica, and he worked as a research intern at Google Brain and Google DeepMind from May 2021 to April 2024. He coauthored a 2024 OSDI paper on fair LLM serving and a 2025 memory-allocation framework for heterogeneous LLM embeddings called Jenga. At OpenAI from June 2024 to August 2025, he led infrastructure and inference work for gpt-oss and built training and inference systems for reasoning models; since August 2025, he is an AI Research Scientist at Meta, focusing on inference.
Timeline
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2015–2019
Computer science at Peking University
He earns a B.S. in computer science at Peking University in 2019.
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2019–2024
A Berkeley PhD
At UC Berkeley, he completes a Ph.D. in computer science in 2024 under Ion Stoica.
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May 2021–April 2024
Google Brain research internship
From May 2021 to April 2024, he works as a research intern at Google Brain and Google DeepMind, hosted by Yanping Huang, Yuanzhong Xu, and Zhifeng Chen.
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2023
vLLM and PagedAttention
In 2023, he coauthors the vLLM paper and helps develop its open-source LLM serving engine. PagedAttention is inspired by virtual-memory paging and manages the key-value cache; vLLM improves throughput by 2–4× at the same latency.
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2024
Fairness in LLM serving
At OSDI 2024, he coauthors “Fairness in Serving Large Language Models,” which proposes the Virtual Token Counter, a fair scheduler based on continuous batching.
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June 2024–August 2025
Inference systems at OpenAI
From June 2024 to August 2025, he serves as a Member of Technical Staff at OpenAI. He leads infrastructure and inference work for gpt-oss and builds training and inference systems for reasoning models.
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2025
Jenga for heterogeneous LLMs
In 2025, he coauthors Jenga, a memory-allocation framework for heterogeneous LLM embeddings. The system improves GPU memory utilization by up to 79.6% and serving throughput by up to 4.92×, with an average gain of 1.80×.
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Since August 2025
AI Research Scientist at Meta
He joins Meta as an AI Research Scientist in August 2025 and focuses on inference.
Career
- Since 2025MetaAI Research Scientist
- 2024–2025OpenAIMember of Technical Staff
- 2021–2024Google BrainResearch Intern
- 2021–2024Google DeepMindResearch Intern
Education
- 2024University of California, BerkeleyPh.D.
- 2019Peking UniversityB.S.
Sources and credits
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- Zhuohan Li
- vLLM – UC Berkeley Sky Computing Lab
- vLLM: Easy, Fast, and Cheap LLM Serving with PagedAttention | vLLM Blog
- Efficient Memory Management for Large Language Model Serving with PagedAttention
- Fairness in Serving Large Language Models | USENIX
- Jenga: Effective Memory Management for Serving LLM with Heterogeneity



