OpenAI researcher Jason Wei is joining Meta’s new superintelligence lab, according to multiple sources familiar with the matter. 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. One source tells WIRED that another OpenAI researcher, Hyung Won Chung, will also be joining Meta. OpenAI, Meta, Wei, and Chung did not immediately respond to requests for comment from WIRED. Just last week, WIRED reported that OpenAI had recruited four high-ranking engineers from Tesla, xAI, and Meta.