Jeff Dean spent twenty seven years building Google’s brain. Now he is building someone else’s, and investors want to hand him fifty billion dollars to do it.
Dean left Google a few weeks ago along with three of his longtime collaborators, Sanjay Ghemawat, Oriol Vinyals, and Quoc Le, to start Discovery Loop, a company built to automate the slow grind of scientific research itself: propose an experiment, run it, check the result, then do it again thousands of times over. It is set up as a public benefit corporation, and Google is still in the picture as a founding investor, supplying computing power for at least the first year even as its own former stars walk out the door.
Only weeks ago Discovery Loop was raising money at around a ten billion dollar valuation. Now it is reportedly in talks for a new round near fifty billion, backed by names like Radical Ventures and Khosla Ventures. Investors are betting the next real breakthrough in AI might not come from inside a giant company at all.
Dean is not the only one walking out the door. Other DeepMind veterans, including Thore Graepel, one of the minds behind AlphaGo, have left in recent months to raise money for their own AI ventures. A dozen and a half of them reportedly met up in London not long ago just to talk about how to fund what comes next.
I get why this reads like a warning sign for Google. Maybe it is. But I read it differently. The people who built some of the most important AI research of the last decade still believe the best work is ahead of them, enough to bet their careers on it again. That is a good sign for where this whole field is headed, wherever the paychecks end up coming from.
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Sources:
https://www.bloomberg.com/news/articles/2026-09-25/google-deepmind-exodus-sparks-vc-frenzy-for-ai-s-next-big-thing
https://techcrunch.com/2026/08/05/jeff-dean-and-other-top-ai-researchers-are-leaving-google-to-launch-their-own-startup/
https://techfundingnews.com/ex-google-chief-scientist-jeff-dean-targets-50b-valuation-for-new-ai-startup-discovery-loop/
Repost this. Thanks.