Partner Researcher · Microsoft Research

Xiaodong Liu

Leading AI inference optimization, large language model post-training, reinforcement learning, and safety alignment at Microsoft Research.

This inference optimization work has delivered billion-dollar cost reductions. Built model families including MT-DNN, DeBERTa, UniLM, METRO, PubMedBERT, and Phi that power products used by billions of people and have collectively surpassed 500 million downloads on Hugging Face.

LLM post-training Reinforcement learning Safety alignment Efficient inference Foundation models

Research

Current work spans AI inference optimization, post-training, reinforcement learning, and safety alignment at Microsoft scale.

Current Focus

  • LLM post-training and reinforcement learning
  • Safety alignment and adversarial robustness
  • Efficient inference and scalable AI systems
  • Foundation models and long-context reasoning

Service

  • Senior Area Chair 
  • NeurIPS 2026
  • ICML 2026
  • NeurIPS 2025
  • ...