Two top OpenAI executives, Bill Peebles and Kevin Weil, resign on the same day! The OpenAI for Science division is dissolved immediately.

ORIGINALOpenAI 兩大高層 Bill Peebles、Kevin Weil 同天離職！部門 OpenAI for Science 即刻解散

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On April 17, 2026, Bill Peebles, the core lead of the OpenAI video generation model Sora, and Kevin Weil, former Chief Product Officer (CPO) and founder of OpenAI for Science, announced their departures on the same day. (Context: Computing power shortage is dire! WSJ: Blackwell rental costs surged 48% in two months, Anthropic's slowness causes enterprise churn) (Background: 10 years of grievances: If OpenAI hadn't been hypocritical, there would be no powerful Anthropic) Sora was shut down last month, with estimated daily computing losses of around $1 million. Bill Peebles, who led it from a two-person team to its official release, chose to leave after the department was shuttered. On the same day, CPO Kevin Weil also announced his departure on X, and the OpenAI for Science division he led will no longer exist as an independent department. Bill Peebles' farewell post on X was calm yet emotionally resonant. He said that building Sora from scratch with the team was the honor of a lifetime and a great adventure. After the release of Sora 2, he chose to leave. I have decided to leave OpenAI. Below is the letter I shared with the team. Building Sora from scratch with you all has been the honor and adventure of a lifetime. As this team knows well, one of the best parts of making video is that you get to see the scaling laws of the model firsthand... The shutdown of Sora was not due to a failure in product competition, but a result of being crushed by computing costs. On April 16, the OpenAI for Science team led by Kevin Weil had just officially released GPT-Rosalind, named after Rosalind Franklin, the co-discoverer of the DNA double helix structure. It focuses on life science reasoning, with partners including Amgen, Moderna, the Allen Institute, and Thermo Fisher Scientific. The atmosphere at the launch event was enthusiastic, yet unexpectedly, Weil announced the next day that it was his last day at OpenAI. He wrote on X: Today is my last day at OpenAI, as OpenAI for Science is being decentralized and integrated into other research teams. These two years have been eye-opening, from serving as Chief Product Officer to joining the research team and founding OpenAI for Science. Bloomberg interprets this wave of personnel adjustments as OpenAI continuing to cut "side quests" and consolidating resources to focus on enterprise AI and superapps. Sora belongs to consumer-grade video generation, which is highly capital-intensive and slow to monetize; OpenAI for Science follows an academic research path, which is also distant from OpenAI's current commercial main battlefield. The winding down of these two lines aligns with this overall direction.

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