What Weil's departure and Prism's sunset reveal is not a personnel story — it is the end of a specific organizational argument. OpenAI for Science was the institutional form of the claim that frontier AI would invest in scientific discovery as something other than a downstream application of coding infrastructure. That claim has now been decided against, from inside the company that made it loudest. Weil confirmed the departure , and TechCrunch framed it immediately as a pivot away from consumer moonshots toward enterprise AI — but the more…