Lei Xu (徐 磊)

About Me

I’m a Member of Technical Staff at Thinking Machines Lab working on pretraining.

Previously, I was an ML scientist at OpenEvidence, where I worked on AI systems for medical questions-answering and clinical decision support, and an Applied Scientist at Amazon AWS, where I worked on LLMs for medical scribing.

I earned my Ph.D. in Computer Science from MIT in 2023, researching language model robustness and synthetic data, and my B.Eng. from Tsinghua University.