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

Wednesday, July 29, 2026


Lilian Weng departed Thinking Machines and joined OpenAI. Weng had previously served as VP of AI Safety Research at OpenAI before working at Thinking Machines.

Original reporting: https://techcrunch.com/2026/07/29/thinking-machines-co-founder-lilian-weng-left-the-company-citing-health-reasons-then-joined-openai/

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