Thinking Machines Lab
Dropbox
Peking University
Adrien EcoffetResearcher
OpenAI
Research Scientist
via OpenAI
Researcher · Founder · Executive
Lilian Weng
LW
VP of AI Safety at OpenAI
Weng helped shape the safety systems used to deploy frontier models, contributing to rule-based rewards and GPT-4 safety while leading applied research teams. Her widely read Lil'Log turns complex work on agents, reinforcement learning, and model safety into accessible technical explanations.
See something inaccurate or outdated?
Background
Current role
VP of AI Safety Jul 2026-presentOpenAI
OpenAIPreviously
About this data
Work and education history is primarily focused on AI-relevant roles and may not be comprehensive.
Last editorial review: August 8, 2026News 2
moveLilian Weng returns to OpenAI as VP of AI Safety
The former Thinking Machines Lab co-founder is returning to OpenAI to work on recursive self-improvement research.
July 30, 2026moveLilian Weng leaves Thinking Machines LabThe co-founder said she was stepping away after concluding that the pace and workload were not sustainable for her health.
July 28, 2026Citation Trend
2 snapshots49,792citations as of Jun 15, '26+19,764 since Aug 25, '25
For today’s citation count and citations per paper, visit Google Scholar.