Junhyuck Kim
Research Scientist
KRAFTON AI
j4ckkim [AT] krafton.com
About
I am a research scientist at KRAFTON AI, led by Kangwook Lee. I am also fortunate to collaborate with Dimitris Papailiopoulos on exciting research projects.
Previously, I was a Master’s student in the Machine Learning Group at Cambridge, where I was supervised by Richard Turner.
Publications
(* Equal contribution, † Core contribution)
Orak: A Foundational Benchmark for Training and Evaluating LLM Agents on Diverse Video Games
Dongmin Park*†, Minkyu Kim*†, Beongjun Choi*†, Junhyuck Kim†, Keon Lee†, Jonghyun Lee†, Inkyu Park†, Byeong-Uk Lee†, Jaeyoung Hwang†, Jaewoo Ahn†, Ameya S. Mahabaleshwarkar, Bilal Kartal, Pritam Biswas, Yoshi Suhara, Kangwook Lee, Jaewoong Cho
Preprint, 2025
Alignment as Distribution Learning: Your Preference Model is Explicitly a Language Model
Jihun Yun*, Juno Kim*, Jongho Park, Junhyuck Kim, Jongha Jon Ryu, Jaewoong Cho, Kwang-Sung Jun
Preprint, 2025
Lexico: Extreme KV Cache Compression via Sparse Coding over Universal Dictionaries
Junhyuck Kim, Jongho Park, Jaewoong Cho, Dimitris Papailiopoulos
ICML 2025; ICLR 2025 SLLM Workshop Spotlight
Translation Equivariant Transformer Neural Processes
Matthew Ashman, Cristiana Diaconu, Junhyuck Kim, Lakee Sivaraya, Stratis Markou, James Requeima, Wessel P. Bruinsma, Richard E. Turner
ICML 2024
Orak: A Foundational Benchmark for Training and Evaluating LLM Agents on Diverse Video Games
Dongmin Park*†, Minkyu Kim*†, Beongjun Choi*†, Junhyuck Kim†, Keon Lee†, Jonghyun Lee†, Inkyu Park†, Byeong-Uk Lee†, Jaeyoung Hwang†, Jaewoo Ahn†, Ameya S. Mahabaleshwarkar, Bilal Kartal, Pritam Biswas, Yoshi Suhara, Kangwook Lee, Jaewoong Cho
Preprint, 2025
Alignment as Distribution Learning: Your Preference Model is Explicitly a Language Model
Jihun Yun*, Juno Kim*, Jongho Park, Junhyuck Kim, Jongha Jon Ryu, Jaewoong Cho, Kwang-Sung Jun
Preprint, 2025
Lexico: Extreme KV Cache Compression via Sparse Coding over Universal Dictionaries
Junhyuck Kim, Jongho Park, Jaewoong Cho, Dimitris Papailiopoulos
ICML 2025; ICLR 2025 SLLM Workshop Spotlight
Translation Equivariant Transformer Neural Processes
Matthew Ashman, Cristiana Diaconu, Junhyuck Kim, Lakee Sivaraya, Stratis Markou, James Requeima, Wessel P. Bruinsma, Richard E. Turner
ICML 2024
Education
University of Cambridge
MEng, Information and Computer EngineeringOct. 2023 - Jun. 2024
University of Cambridge
BA, Information and Computer EngineeringOct. 2020 - Jun. 2023
Experience
KRAFTON AIJuly. 2024 - Present
Research Scienist
KRAFTON AIJun. 2023 - Sept. 2023
Research Intern
MicrosoftJun. 2022 - Aug. 2022
Software Engineer Intern
Animo HealthTechNov. 2021 - Apr. 2022
Data Scientist Intern