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  "publishedAt": "2026-05-19T16:44:06.000Z",
  "site": "https://upstract.com",
  "textContent": "Andrej Karpathy, the AI researcher who co-founded and formerly worked at OpenAI and previously led AI at Tesla, has joined Anthropic. “I’ve joined Anthropic,” Karpathy posted on X Tuesday. “I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join…",
  "title": "OpenAI co-founder Andrej Karpathy joins Anthropic’s pre-training team"
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