Andrej Karpathy announces he is joining Anthropic's pretraining team
Announced he is joining Anthropic's pretraining team — under Nick Joseph
Why it matters
The most-cited person in these records moved inside a frontier lab. The nature of his public writing may change from here on
Source — Primary sources first; secondary reports are labelled “Press”
Presstechcrunch.comhttps://techcrunch.com/2026/05/19/openai-co-founder-andrej-karpathy-joins-anthropics-pre-training-team/Added in Week 35, 2026 · See that week