OpenAI Co-founder Andrej Karpathy Joins Anthropic Team

As reported by Reuters, Karpathy stated he was 'very excited to join the team here and get back to R&D'. His announcement emphasizes his return to research and development work in the artificial intelligence sector. The highly influential AI community member, who studied under prominent Stanford AI scientist Fei-Fei Li and joined OpenAI as one of its earliest staffers, has joined Anthropic's pretraining team responsible for large-scale training runs that give Claude its core knowledge and capabilities. He sits on the team of Nick Joseph, the company's head of pretraining. According to TechCrunch, Karpathy will start a team focused on using Claude to accelerate pre-training research, making him one of the few researchers who can bridge the gap between LLM theory and large-scale training practice. Karpathy began working this week and is 'very excited to join the team here and get back to R&D'.

According to Reuters, Karpathy was among the early members associated with OpenAI and previously served as director of AI at Tesla before leaving the firm in 2022. In his X post, he expressed that he remains 'deeply passionate about education' and plans to 'resume my work on it in time'. This indicates his intention to maintain his focus on educational applications of artificial intelligence alongside his research work. He has also announced in 2024 that he was starting an AI-integrated education platform named Eureka Labs. However, TechCrunch reports that Karpathy hasn't shared many updates on Eureka Labs since its launch, and it's not clear if the renowned researcher will continue with the startup. Karpathy's AI journey extends back to Anthropic's chief rival, as he helped launch OpenAI as a founding research scientist, then left for Tesla as AI director, leading the Tesla Autopilot computer vision team, before rejoining OpenAI in 2023. He publicly supported OpenAI CEO Sam Altman during his brief ouster, but ultimately left OpenAI again in February 2024.

As reported by Reuters, the move comes as Anthropic faces strong competition from rival frontier model developers such as OpenAI as they seek to create the most sophisticated models for cloud providers. The company has experienced significant executive departures, including former chief scientist Ilya Sutskever and former tech chief Mira Murati, founder and CEO of AI startup Thinking Machines. John Schulman, another OpenAI co-founder, left for Anthropic in 2024, making Karpathy's arrival particularly significant for the company's AI development efforts. This latest hire represents a major strategic move as Anthropic works to attract top AI talent in the intensifying competition for elite researchers. The rivalry between the companies has reached a fever pitch, with their respective CEOs notably refusing to hold hands onstage during a photo op with other AI leaders. OpenAI CEO Sam Altman recently accused Anthropic of helping to fuel the hate toward him that led to an attack on his house.

According to TechCrunch, Anthropic has also brought on Chris Rohlf to its frontier red team, which stress-tests advanced AI models against severe threats. Rohlf is a veteran of the cybersecurity industry with more than 20 years of experience, previously working at Yahoo's cybersecurity team known as "The Paranoids" and more recently at Meta for six years before joining Anthropic. "We have a real opportunity in front of us to dramatically improve cyber security with AI," Rohlf said in a post on X. "I can't think of a better company or team to join at this critical moment in time."