OpenAI co-founder Andrej Karpathy joins Anthropic’s pre-training team

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. He has also taught an online course called Neural Networks: Zero to Hero that helps students learn to build neural networks from scratch in code, and has a YouTube channel where he semi-regularly posts lectures on LLMs and AI. 

“I remain deeply passionate about education and plan to resume my work on it in time,” Karpathy said.

TechCrunch has reached out to Karpathy for comment.

Separately, 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. He previously worked at Yahoo’s well-respected cybersecurity team known as “The Paranoids,” and more recently at Meta, where he worked for six years before joining Anthropic. Rohlf was also a fellow at Georgetown’s Center for Security and Emerging Technology, where he worked on the CyberAI project.

“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.”OpenAI co-founder Andrej Karpathy joins Anthropic’s