Andrej Karpathy joins Anthropic to work on frontier large language models — a return to research after years of teaching and tooling
Karpathy announced he has joined Anthropic to work at the frontier of large language models, describing it as a return to R&D. One of the field's most effective explainers moving back into a lab is a signal about where the interesting problems are perceived to be.
Individual hires rarely deserve coverage. This one does because of what Karpathy has been doing instead: teaching, writing, and building small legible tools that made the field's internals accessible to people outside it. Choosing to go back inside a lab is a statement about where he thinks the unsolved work is.
It also lands alongside Opus 5 taking the top of the intelligence index at half the previous price. Talent follows momentum, and momentum is currently legible in a way it was not six months ago.
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