OpenAI founding member Andrej Karpathy announces joining Anthropic: returning to the frontline of LLM R&D

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The top AI luminary returns to the front lines of R&D! Andrej Karpathy, a top-tier scholar revered as the "Feynman of AI," former Director of AI at Tesla, and a founding member of OpenAI, announced today (19th) that he is joining Anthropic. He stated that the coming years will be the most formative period for Large Language Models (LLMs), prompting his decision to dive back into frontier research. The arrival of this superstar, who once created legendary AI courses, has not only boosted morale at Anthropic but also sparked a frenzy in the tech world. (Context: After scanning 2 million books to train Claude, Anthropic sent them straight to the shredder.) (Background: What is Stainless, the company Anthropic acquired for $300 million? A low-profile but vital AI infrastructure player.) The AI talent war has seen another epic shift! Andrej Karpathy, a world-renowned top AI expert and a highly respected "AI influencer/mentor," officially announced his next move today (19th). Karpathy posted a brief but industry-shaking update on the social platform X: "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." The post immediately ignited heated discussions across the AI community. Countless engineers and researchers left congratulatory messages, and the market generally views this as a "trump card" Anthropic has successfully secured in its competition against its old rival, OpenAI. 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 A legendary resume witnessing the rise of AI, from OpenAI to Tesla For those following the development of artificial intelligence, the name Andrej Karpathy is synonymous with excellence. Born in Slovakia, he studied under the renowned Stanford computer vision expert Fei-Fei Li and has left a brilliant track record in both academia and industry: - Founding member of OpenAI (2015–2017): Participated in the early founding of OpenAI, laying the research foundation for deep learning and generative models. - Director of AI at Tesla (2017–2022): Personally recruited by Elon Musk, he steered the Autopilot vision team and drove technological leaps in FSD (Full Self-Driving). - Returned to OpenAI (2023–2024): Returned to his former employer, focusing on optimizing the training processes for core models like GPT-4. - Founded Eureka Labs (2024): After leaving, he briefly ventured into entrepreneurship, establishing a startup platform combining AI and education, dedicated to revolutionizing learning methods. Hailed as the "Feynman of AI," an irreplaceable influence in education Beyond his top-tier technical prowess, Karpathy is best known for his unparalleled "teaching talent." Not only did he co-create the legendary Stanford course CS231n with his mentor Fei-Fei Li, but his YouTube tutorials, such as "Let’s build GPT from scratch," are considered classics by countless developers worldwide. He excels at breaking down extremely complex neural networks and Transformer architectures using "first principles," making them clear and accessible, which is why the community dubbed him the "Feynman of AI." Although Karpathy's move to Anthropic means he will temporarily shift his focus back to high-intensity LLM underlying R&D, he promised in his post that he would return to his beloved educational work at the appropriate time. With the addition of this legendary figure, Anthropic will undoubtedly possess greater technical explosive power and community appeal in the frontier battlefield of large models over the coming years.

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