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

Tech TechCrunch By Rebecca Bellan, Lorenzo Franceschi-Bicchierai 19 May 2026 15:43 1 min read
OpenAI co-founder Andrej Karpathy joins Anthropic’s pre-training team

Pre-training is responsible for the large-scale training runs that give Claude its core knowledge and capabilities, according to the company. It's also one of the most expensive, compute-intensive phases of building a frontier model.

Pre-training is responsible for the large-scale training runs that give Claude its core knowledge and capabilities, according to the company. It's also one of the most expensive, compute-intensive phases of building a frontier model.

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