Investing.com - Andrej Karpathy, an artificial intelligence researcher who co-founded OpenAI before joining Tesla, announced Tuesday that he is joining Anthropic.

Karpathy will join the pretraining team, which helps the company's Claude models acquire their core knowledge and capabilities. Anthropic said he starts this week and will build a team focused on using Claude to accelerate pretraining research.

"I think the next few years at the frontier of LLMs will be especially formative," Karpathy wrote in a post on X, referring to large language models. "I am very excited to join the team here and get back to R&D."

The hire represents the latest high-profile addition for Anthropic. Ross Nordeen, a founding member of xAI and former Tesla employee, announced earlier this month he was joining Anthropic. The announcement came the same day the company struck a deal with Elon Musk's SpaceX to rent compute capacity at xAI's Colossus 1 data center in Memphis, Tennessee.

After helping to start OpenAI, Karpathy left for Tesla in 2017 to serve as director of AI, where he led the computer vision team for Tesla Autopilot