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Andrej Karpathy Joins Anthropic Pre-Training Team
Andrej Karpathy has joined Anthropic to work on pre-training of large language models. He previously co-founded OpenAI and led AI efforts at Tesla.
May 19, 11:43 AM·1m read1 source
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Andrej Karpathy has joined Anthropic to work on pre-training of large language models. He posted on X on May 19, 2026, that he started this week at the company. Karpathy will work under team lead Nick Joseph. An Anthropic spokesperson said he will start a team focused on using Claude to accelerate pre-training research.
Co-founded OpenAI and worked there until 2017.
He then led Tesla's Full Self-Driving and Autopilot programs until 2022. He returned to OpenAI for one year before leaving in 2024 to start Eureka Labs. He has taught an online course on neural networks and maintains a YouTube channel with lectures on AI. Karpathy said he remains passionate about education and plans to resume work on it in time.
Anthropic also brought on Chris Rohlf to its frontier red team.
Rohlf has more than 20 years of experience in cybersecurity and previously worked at Meta for six years.
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