Joonkee Kim

I'm an LLM research engineer at Upstage, where I work on the Solar LLM series. Before that, I was at LG AI Research (2024–2026), where I contributed to the EXAONE models, from EXAONE 3.0 to EXAONE 4.5 and K-EXAONE.

I received my M.S. from the Graduate School of AI at KAIST, advised by Prof. Se-Young Yun, and my B.S. in Computer Science and Bio-Mechatronics from Sungkyunkwan University. My research focuses on LLM post-training and reinforcement learning.