Thinking Machines co-founder Lilian Weng left the company for health reasons and later joined OpenAI | TechCrunch0

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• July 30, 2026

Lilian Weng, co-founder of Thinking Machines, announced this week that she was stepping down from her role, citing health concerns. “I don’t feel like I can continue at the pace a startup requires,” he wrote in an internal Slack message, which he also shared on X. “After thinking about it for several months, I finally