OpenAI · TechCrunch
OpenAI is losing two of the architects of its most ambitious moonshots
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◎ Multiple-sources
Kevin Weil, who led the company’s science research initiative, and Bill Peebles, the researcher behind AI video tool Sora, both announced their departures on Friday.
Key facts
- Weil deleted a tweet claiming GPT-5 had solved 10 previously unsolved Erdős mathematical problems, but that claim fell apart immediately when the mathematician who runs the website erdosproblems
- Sora, which was losing an estimated $1 million per day in compute costs, was shut down last month
- Kevin Weil, who led the company’s science research initiative, and Bill Peebles, the researcher behind AI video tool Sora, both announced their departures on Friday
- Accelerating science will be one of the most stunningly positive outcomes of our push to AGI.” The team had a short and bumpy road after its formal announcement in October 2025
Summary
OpenAI is losing two of the architects of its most ambitious moonshots. OpenAI for Science was the internal research group behind Prism, an AI-powered platform that promised to accelerate scientific discovery. Weil deleted a tweet claiming GPT-5 had solved 10 previously unsolved Erdős mathematical problems, but that claim fell apart immediately when the mathematician who runs the website erdosproblems.com called it out.