kapynStartups

Thinking Machines co-founder Lilian Weng left the company citing health reasons, then joined OpenAI

Lilian Weng returns to OpenAI after briefly departing for co-founding Thinking Machines. Weng previously led AI safety research at OpenAI before launching the startup. Her return brings significant research leadership back to OpenAI's safety division.

TechCrunch AI·Jul 29, 2026

Opening Kapyn…