Star AI Researcher Andrew Tulloch Leaves Meta For Anthropic

10 Sept 2026, 1:12 pm · 2d ago · 1 min read · OfficeChai

Top artificial intelligence researcher Andrew Tulloch has resigned from Meta less than a year after joining the tech giant, with reports indicating he is set to join AI rival Anthropic. Tulloch, known as one of the AI sector's most sought-after research talents with a compensation package reportedly valued near $1 billion, marks a high-profile defection in the escalating war for top machine learning minds. His transition comes as Anthropic accelerates development of its Claude models to challenge Meta’s open-source Llama ecosystem and OpenAI’s offerings in an increasingly competitive enterprise and consumer AI race worldwide.