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Andrej Karpathy Ditches the Classroom for Anthropic's Pretraining Team

Andrej Karpathy, a prominent AI researcher and OpenAI co-founder, has announced he is joining rival AI lab Anthropic, where he will work on the pre-training team and help build a new team using Claude to accelerate pretraining research. The hire is seen as a major win for Anthropic in the intense competition for top AI talent. Karpathy, who previously led Tesla's Autopilot AI team and has become a widely followed AI educator, said he is excited to return to research and development at "the frontier of LLMs."

19 May 2026