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

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

Andrej Karpathy joined Anthropic’s pre-training team, which runs large-scale training for Claude’s core knowledge and capabilities; the RSS snippet does not disclose his title, reporting line, or start date.

Why it matters: HKR-H/K/R all pass: Karpathy’s OpenAI identity, Anthropic pre-training role, and Claude-scale training work make this a same-day talent-war story, even though level, reporting line, and start date are undisclosed.