OpenAI co-founder Andrej Karpathy joins Anthropic’s pre-training team
Andrej Karpathy has joined Anthropic's pre-training team, focusing on large-scale training for AI models. He expressed excitement about contributing to research and development in the field of large language models. Karpathy's experience at OpenAI and Tesla positions him as a key figure in bridging AI theory and practical application.
- ▪Andrej Karpathy has joined Anthropic to work on pre-training under team lead Nick Joseph.
- ▪Pre-training is a crucial and resource-intensive phase in developing AI models like Claude.
- ▪Karpathy aims to build a team that leverages AI-assisted research to enhance pre-training efforts.
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Andrej Karpathy, the AI researcher who co-founded and formerly worked at OpenAI and previously led AI at Tesla, has joined Anthropic. “I’ve joined Anthropic,” Karpathy posted on X Tuesday. “I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D.” Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.— Andrej Karpathy (@karpathy) May 19, 2026 Karpathy started this week at Anthropic, where he is working on pre-training under team lead Nick Joseph.
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