Top AI researcher Andrew Tulloch ditches Meta to work on training and inference at Anthropic

Andrew Tulloch, a prominent AI researcher, is leaving Meta to join Anthropic after less than a year at the company. He will start next week on Anthropic's inference and performance team, focusing on optimizing AI training and model responses. Tulloch previously worked at OpenAI, where he contributed to GPT-4o, GPT-4.5, and o3 models, and co-founded Thinking Machines Lab in 2025. His move highlights the ongoing competition for AI talent.

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