Cofounder retention at AI labs: Anthropic 7/7, OpenAI 3/11, xAI just 1/12

sahilypatel · x · 2026-11-07

A widely shared tally of how many cofounders remain at their AI labs: Anthropic 7 of 7, Thinking Machines 3 of 6, OpenAI 3 of 11, and xAI just 1 of 12 — Elon himself. The numbers highlight how little churn Anthropic has seen versus heavy cofounder departures at OpenAI and xAI.

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