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

Weng previously served as the VP of AI Safety Research at OpenAI.

TechCrunch AI· Amanda Silberling·Wednesday, July 29, 2026 at 9:07 PM UTC

Mira Murati

Founder & CEO · Thinking Machines Lab

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

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

Thinking Machines co-founder returns to OpenAI: report - Seeking Alpha

Lilian Weng rejoins OpenAI after leaving Thinking Machines Lab over the startup's grueling pace - businessinsider.com

Exclusive: Thinking Machines Cofounder to Return to OpenAI - The Information

What smart people are saying about Lilian Weng's departure from Thinking Machines Lab - AOL.com

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