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Meta AI researcher Andrew Tulloch departs after Muse launch - Semafor

September 9, 2026 5:37 PM

Investing.com - Meta AI researcher Andrew Tulloch is leaving the company following the launch of its new AI products, according to Semafor, citing a person briefed on the matter.

Tulloch delayed his departure until Meta (NASDAQ: META) successfully launched its new family of open source AI models and AI assistant, Muse, which was announced Tuesday.

Tulloch came to Meta from Thinking Machine Labs and had worked in the company's TBD lab, the center of CEO Mark Zuckerberg's AI strategy. The lab is spearheaded by Scale AI founder Alexandr Wang.

Tulloch gained attention for being one of the highest paid employees in the tech industry during his tenure at Meta. It is unclear why Tulloch left or whether he plans to continue his AI research at another firm.

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