Oleksii Kuchaiev

Principal Researcher, NVIDIA

Joined

February 2017

Names

Oleksii Kuchaiev (Preferred)

Emails

****@gmail.com (Confirmed)

****@nvidia.com (Confirmed)

Personal Links

Homepage

Google Scholar

Career & Education History

Principal Researcher

NVIDIA (nvidia.com)

2016 – Present

Senior Applied Scientist

Apple (apple.com)

2013 – 2016

Research SDE 2

Microsoft (microsoft.com)

2010 – 2013

Advisors, Relations & Conflicts

Coworker

Boris Ginsburg

Present

PhD Advisor

Natasa Przulj

2007 – 2010

Expertise

Post-training

2022 – Present

Large Language Models

2015 – Present

Artificial Intelligence

2010 – Present

Publications

RLBFF: Binary Flexible Feedback to bridge between Human Feedback & Verifiable Rewards
Zhilin Wang, Jiaqi Zeng, Olivier Delalleau, Ellie Evans, Daniel Egert, Hoo-Chang Shin, Felipe Soares, Yi Dong, Oleksii Kuchaiev
- ICLR 2026 Poster
- Readers: Everyone
Think Twice: Branch-and-Rethink Reasoning Reward Model
Yizhu Jiao, Jiaqi Zeng, Julien Veron Vialard, Oleksii Kuchaiev, Jiawei Han, Olivier Delalleau
- Submitted to ICLR 2026
- Readers: Everyone
The Measure of All Measures: Quantifying LLM Benchmark Quality
Jihan Yao, Peter Jin, Ke Bao, Qiaolin Yu, Khushi Bhardwaj, Chang Su, Jialei Wang, YIKAI ZHU, Sugam Devare, Damon Mosk-Aoyama, Zhen Dong, Venkat Krishna Srinivasan, Yineng Zhang, Oleksii Kuchaiev, Jiantao Jiao, Banghua Zhu
- NeurIPS 2025 LLM Evaluation Workshop Oral
- Readers: Everyone
Llama-Nemotron: Efficient Reasoning Models
Soumye Singhal, Jiaqi Zeng, Alexander Bukharin, Yian Zhang, Gerald Shen, Ameya Sunil Mahabaleshwarkar, Bilal Kartal, Yoshi Suhara, Akhiad Bercovich, Itay Levy, Izik Golan, Mohammed Dabbah, Ran El-Yaniv, Somshubra Majumdar, Igor Gitman, Evelina Bakhturina, Jimmy J. Zhang, Bor-Yiing Su, Guyue Huang, Izzy Putterman et al. (7 additional authors not shown)
- EXAIT@ICML 2025 Poster
- Readers: Everyone
HelpSteer3-Preference: Open Human-Annotated Preference Data across Diverse Tasks and Languages
Zhilin Wang, Jiaqi Zeng, Olivier Delalleau, Hoo-Chang Shin, Felipe Soares, Alexander Bukharin, Ellie Evans, Yi Dong, Oleksii Kuchaiev
- NeurIPS 2025 Datasets and Benchmarks Track poster
- Readers: Everyone
Adversarial Training of Reward Models
Alexander Bukharin, Haifeng Qian, Shengyang Sun, Adithya Renduchintala, Soumye Singhal, Zhilin Wang, Oleksii Kuchaiev, Olivier Delalleau, Tuo Zhao
- COLM 2025
- Readers: Everyone
HelpSteer2-Preference: Complementing Ratings with Preferences
Zhilin Wang, Alexander Bukharin, Olivier Delalleau, Daniel Egert, Gerald Shen, Jiaqi Zeng, Oleksii Kuchaiev, Yi Dong
- ICLR 2025 Poster
- Readers: Everyone
LLM Pruning and Distillation in Practice
Sharath Turuvekere Sreenivas, Saurav Muralidharan, Raviraj Bhuminand Joshi, Marcin Chochowski, Mostofa Patwary, Pavlo Molchanov, Mohammad Shoeybi, Jan Kautz, Ameya Sunil Mahabaleshwarkar, Gerald Shen, Jiaqi Zeng, Oleksii Kuchaiev, ZIJIA CHEN, Yoshi Suhara, Shizhe Diao, Chenhan D. Yu, Wei-Chun Chen, Hayley Ross, Daniel Korzekwa, Oluwatobi Olabiyi et al. (2 additional authors not shown)
- Submitted to ICLR 2025
- Readers: Everyone
HelpSteer 2: Open-source dataset for training top-performing reward models
Zhilin Wang, Yi Dong, Olivier Delalleau, Jiaqi Zeng, Gerald Shen, Daniel Egert, Jimmy J. Zhang, Makesh Narsimhan Sreedhar, Oleksii Kuchaiev
- NeurIPS 2024 Track Datasets and Benchmarks Poster
- Readers: Everyone
NeMo-Aligner: Scalable Toolkit for Efficient Model Alignment
Gerald Shen, Zhilin Wang, Olivier Delalleau, Jiaqi Zeng, Yi Dong, Daniel Egert, Shengyang Sun, Jimmy J. Zhang, Sahil Jain, Ali Taghibakhshi, Markel Sanz Ausin, Ashwath Aithal, Oleksii Kuchaiev
- COLM
- Readers: Everyone

View all 13 publications

Co-Authors

View all 85 co-authors