← Back to Team
Ray Sun

Ray Sun

Founding Researcher, Millae

Seoul, South Korea

Ray is a founding researcher at Millae, where he leads the team's research program towards autonomous intelligence. Ray started Millae with a simple premise: that the best way to make progress on AI is to build a small, focused research team with no other mandate.

Ray's research background is in reinforcement learning and computer security. He was previously a senior software engineer at Meta. For his next research topic, he is exploring creativity, long-term memory and compression, mechanistic interpretability, and meta-learning.

Reinforcement Learning Seoul, South Korea
Thoughts on AI
Publications Model-Based Reinforcement Learning

Identifiable Token Correspondence for World Models, ICML 2026

Youngin Kim*, Ray Sun*, Inho Kim, Bumsoo Park, Hyun Oh Song

View on arXiv →
Join Us

Work with Ray.

Millae is looking for researchers to join the team in Seoul.