› Haoxing Du｜杜浩星

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Hi! I’m Haoxing. I am a proud effective altruist trying to help this whole AI thing go well. I’m currently working on a new project on AI behavior evaluations, incubated at Surplus. Please get in touch if you’d like to chat about this!

Most recently, I worked on predicting the weather with AI at a balloon startup called WindBorne. Before that, I evaluated AI models for dangerous capabilities at METR, where we poked at the first AI agents before the term “AI agent” was invented. I also did some research on neural network interpretability at Redwood Research.

Before AI captured my entire attention I wanted to become a theoretical physicist. At Berkeley, I did research at the intersection of machine learning and physics in the amazing Nachman group. Prior to Berkeley, I was fortunate to be part of the Perimeter Scholars International program, and had the privilege of spending the best college years possible at Harvey Mudd College. If not for AI, I might have spent my career thinking about the foundations of quantum theory. A few years ago, I wrote a couple of posts on quantum foundations, hoping to communicate some of my favorite recent advances to a wider audience, which you can find on this site.

When I’m not thinking about the above topics, I like to read, play video games, make music, fly my paraglider, and climb extremely casually.

I’m happily married to Kasey Markel, and we’re moving to San Francisco soon after a few years in East Bay. We have signed the 🔸 10% Pledge. If you are reading this, please consider doing the same!

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Last updated: Aug 4, 2026