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Illustration: Sarah Grillo/Axios. Stock: Getty Images

Andrej Karpathy, one of the best-known AI researchers in the world and a founding member of OpenAI, announced Tuesday that he's joining rival AI lab Anthropic.

Why it matters: The hire is a major coup for Anthropic in the high-stakes competition for elite AI talent — and another sign the company is emerging as a magnet for some of the industry's most respected technical minds.