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

TechCrunch • Tue, 19 May 2026

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.

What happened?

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.

Story details

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.

Why it matters

This story helps build a stronger internal English tech archive around Technology, giving search visitors more reasons to keep browsing the site instead of bouncing after a single headline.

Original source

https://techcrunch.com/2026/05/19/openai-co-founder-andrej-karpathy-joins-anthropics-pre-training-team/