Kevin Weil and Bill Peebles both announced their departures from OpenAI on Friday, two high-profile exits landing the same week the company folded its science research group and kept consolidating around enterprise products. A third executive, B2B engineering chief Srinivas Narayanan, confirmed his own exit hours later.
Weil had run OpenAI for Science since October 2025, after stepping back from his role as chief product officer. Peebles led Sora, the video generation project OpenAI shut down last month after it was reportedly burning roughly $1 million a day in compute. Both departures were reported by TechCrunch.
The side quest era ends
OpenAI has been trimming what leadership internally called "side quests." Sora was the most visible casualty. The app hit the top of the Apple App Store at launch but turned out to be unaffordable to run, and the shutdown last month was the signal that consumer-facing moonshots no longer had protected status. OpenAI for Science is going the same way, decentralized into other research teams rather than kept as its own unit.
Weil's farewell note hit the standard notes. "Accelerating science will be one of the most stunningly positive outcomes of our push to AGI," he wrote, wishing the team well. His exit came one day after his group released GPT-Rosalind, a model aimed at biology and drug discovery. Odd timing for a launch followed immediately by a departure and a team reorganization.
Weil's tenure also included a minor embarrassment. He had to delete a post claiming GPT-5 had cracked 10 unsolved Erdős problems, a claim debunked within hours by the mathematician who maintains the list. That part doesn't appear in the farewell.
Peebles on "cultivating entropy"
Peebles' X post traced Sora from a two-person effort in July 2023 to a product that could generate 1080p multi-shot video seven months later. He credited the project with kicking off "a huge amount of investment in video across the industry," which is a generous way to describe a tool OpenAI couldn't keep running.
The more interesting line was philosophical. "Cultivating entropy is the only way for a research lab to thrive long-term, and Sam deeply understands this," Peebles wrote. Maybe Sam does. The structure of the past month suggests the opposite, at least for projects that don't pay for themselves.
What OpenAI looks like now
The company is pointing most of its energy at enterprise AI and an unreleased "superapp." Recent executive moves fit that story. Product and business chief Fidji Simo took medical leave earlier this month for a worsening neuroimmune condition, with president Greg Brockman stepping in on product. COO Brad Lightcap is also shifting roles.
Narayanan's exit adds to the pile. He oversaw OpenAI's B2B engineering work for three years and said he wanted time with his aging parents in India before planning his next move.
OpenAI has not named replacements for Weil or Peebles. Whether anything of OpenAI for Science survives as a coherent effort inside the restructured research org should become clearer when the GPT-Rosalind roadmap gets its next update.
