Another High-Profile OpenAI Researcher Departs for Meta

Jason Wei, who worked on OpenAI’s o3 and deep research models, will be joining Meta’s superintelligence lab. His colleague Hyung Won Chung is also joining Meta, a source tells WIRED.

OpenAI researcher Jason Wei is joining Meta’s new superintelligence lab, according to multiple sources familiar with the matter.

Wei worked on OpenAI’s o3 and deep research models, according to his personal website. He joined OpenAI in 2023 after a stint at Google, where he worked on chain-of-thought research, which involves training an AI model to process complex queries step-by-step. At OpenAI, Wei became a self-described “diehard” for reinforcement learning, a method of training or refining an AI model with positive or negative feedback. It’s become a promising area of AI research—one that several of the researchers Meta has hired for its superintelligence team specialize in.

One source tells WIRED that another OpenAI researcher, Hyung ...