Chen Zhu

Member of Technical Staff, xAI

Joined

September 2018

Names

Chen Zhu (Preferred)

Emails

****@shanghaitech.edu.cn (Confirmed)

****@cs.umd.edu (Confirmed)

****@gmail.com (Confirmed)

Personal Links

Homepage

Google Scholar

DBLP

Career & Education History

Member of Technical Staff

xAI (x.ai)

2025 – Present

Researcher

Facebook (meta.com)

2024 – 2025

Research Scientist

NVIDIA (nvidia.com)

2023 – 2024

Research Scientist

Google (google.com)

2022 – 2023

PhD student

Department of Computer Science, University of Maryland, College Park (cs.umd.edu)

2018 – 2022

MS student

ShanghaiTech University (shanghaitech.edu.cn)

2015 – 2018

Undergrad student

Beihang University (buaa.edu.cn)

2011 – 2015

Advisors, Relations & Conflicts

PhD Advisor

Tom Goldstein

Present

Expertise

Large Language Models

2022 – Present

Alignment

2022 – Present

Publications

Beyond Reward Hacking: Causal Rewards for Large Language Model Alignment
Chaoqi Wang, Zhuokai Zhao, Yibo Jiang, Zhaorun Chen, Chen Zhu, Yuxin Chen, Jiayi Liu, Lizhu Zhang, Xiangjun Fan, Hao Ma, Sinong Wang
- Submitted to ICLR 2026
- Readers: Everyone
Multi-Sample Preference Optimization for Generative Model Alignment
Chaoqi Wang, Zhuokai Zhao, Chen Zhu, Karthik Abinav Sankararaman, Michal Valko, Xuefei Cao, Zhaorun Chen, Madian Khabsa, Yuxin Chen, Hao Ma, Sinong Wang
- Submitted to ICLR 2026
- Readers: Everyone
Boosting LLM Reasoning via Spontaneous Self-Correction
Xutong Zhao, Tengyu Xu, Xuewei Wang, Zhengxing Chen, Di Jin, Liang Tan, Yen-Ting Lin, Zishun Yu, Zhuokai Zhao, Yun He, Sinong Wang, Han Fang, Sarath Chandar, Chen Zhu
- AI4Math@ICML25 Poster
- Readers: Everyone
Boosting LLM Reasoning via Spontaneous Self-Correction
Xutong Zhao, Tengyu Xu, Xuewei Wang, Zhengxing Chen, Di Jin, Liang Tan, Yen-Ting Lin, Zishun Yu, Zhuokai Zhao, Yun He, Sinong Wang, Han Fang, Sarath Chandar, Chen Zhu
- COLM 2025
- Readers: Everyone
Think Smarter not Harder: Adaptive Reasoning with Inference Aware Optimization
Zishun Yu, Tengyu Xu, Di Jin, Karthik Abinav Sankararaman, Yun He, Wenxuan Zhou, Zhouhao Zeng, Eryk Helenowski, Chen Zhu, Sinong Wang, Hao Ma, Han Fang
- Reasoning and Planning for LLMs @ ICLR2025
- Readers: Everyone
Think Smarter not Harder: Adaptive Reasoning with Inference Aware Optimization
Zishun Yu, Tengyu Xu, Di Jin, Karthik Abinav Sankararaman, Yun He, Wenxuan Zhou, Zhouhao Zeng, Eryk Helenowski, Chen Zhu, Sinong Wang, Hao Ma, Han Fang
- ICML 2025 poster
- Readers: Everyone
The Perfect Blend: Redefining RLHF with Mixture of Judges
Tengyu Xu, Eryk Helenowski, Karthik Abinav Sankararaman, Di Jin, Kaiyan Peng, Eric Han, Shaoliang Nie, Chen Zhu, Hejia Zhang, Wenxuan Zhou, Zhouhao Zeng, Yun He, Karishma Mandyam, Arya Talebzadeh, Madian Khabsa, Gabriel Cohen, Sinong Wang, Yuandong Tian, Hao Ma, Han Fang
- ICLR 2025 Conference Withdrawn Submission
- Readers: Everyone
Preference Optimization with Multi-Sample Comparisons
Chaoqi Wang, Zhuokai Zhao, Chen Zhu, Karthik Abinav Sankararaman, Michal Valko, Xuefei Cao, Zhaorun Chen, Madian Khabsa, Yuxin Chen, Hao Ma, Sinong Wang
- Submitted to ICLR 2025
- Readers: Everyone
OPTune: Efficient Online Preference Tuning
Lichang Chen, Jiuhai Chen, Chenxi Liu, John Kirchenbauer, Davit Soselia, Chen Zhu, Tom Goldstein, Tianyi Zhou, Heng Huang
- ICLR 2025 Conference Withdrawn Submission
- Readers: Everyone
ODIN: Disentangled Reward Mitigates Hacking in RLHF
Lichang Chen, Chen Zhu, Jiuhai Chen, Davit Soselia, Tianyi Zhou, Tom Goldstein, Heng Huang, Mohammad Shoeybi, Bryan Catanzaro
- ICML 2024 Poster
- Readers: Everyone

View all 34 publications

Co-Authors

View all 119 co-authors