Demis Hassabis, the co-founder who built Google’s most consequential artificial-intelligence laboratory, is stepping aside as chief executive of Google DeepMind. He will become chairman of the unit and chief scientist of Alphabet, while continuing to lead drug-discovery company Isomorphic Labs, according to a memo from Sundar Pichai posted to Google’s corporate blog this week.
Koray Kavukcuoglu, the unit’s chief technology officer, will serve as senior vice president of Google DeepMind, reporting directly to Pichai. The change consolidates Google’s AI research and product efforts under a tighter chain of command at a moment when the company is working to answer a run of product launches from OpenAI.
The announcement also marks the departure of Jeff Dean, Google’s chief scientist and a 27-year veteran who helped design the computing infrastructure behind the company’s search and AI systems. Dean is leaving to start Discovery Loop, an independent public benefit corporation focused on AI research, in which Google will be an investor and cloud provider. He will be joined by some of the most cited researchers in the field, including Sanjay Ghemawat, Oriol Vinyals and Quoc Le.
For Hassabis, the move returns him to the role he has always preferred: running research rather than a business. DeepMind was founded in 2010 and acquired by Google in 2014 in one of the company’s biggest deals at the time. Under his leadership the lab produced AlphaGo’s 2016 victory over the world’s best Go player, the AlphaFold protein-folding breakthrough that earned Hassabis and John Jumper the 2024 Nobel Prize in Chemistry, and the Gemini model line that now powers Google’s consumer AI products. The unit evolved under him from a pure research lab into a product engine, and the reshuffle lets him keep doing the part of the job that made him famous.
The new titles carry real weight. As Alphabet chief scientist, Hassabis will set research direction across Google’s AI groups rather than manage one lab’s operations, and his mandate as chairman of DeepMind gives him authority over the unit’s scientific agenda even as Kavukcuoglu handles day-to-day management. The arrangement mirrors a pattern spreading across the industry: founders and top researchers stepping back from operating roles while keeping control of research direction. For Google, it is also a retention play — a way to keep the field’s most decorated researcher inside the company without asking him to run a large organization he has outgrown.
The significance for Google is about how the next phase of the AI race will be fought. The company has long been criticized for research brilliance that did not always translate into product speed. ChatGPT’s arrival in late 2022 forced Google to compress years of product work into months, and OpenAI’s steady cadence of frontier releases has kept the pressure on ever since. By moving Hassabis to a chief-scientist role and pulling DeepMind’s operations under Pichai, Google is betting that the next stage of competition will be won on fundamental capability rather than product polish. The reshuffle reads as an acknowledgment that the last two years were decided on shipping speed, and that the next two will be decided by who pushes the underlying models further.
The personnel changes ripple through the wider industry. Frontier labs have seen near-constant leadership churn, and the competition for top researchers has intensified as pay packages swell. Dean’s decision to leave a 27-year perch to found his own lab shows that even the most senior figures now see more upside in building new institutions than in staying put. For Google, the risk is that research talent follows Dean out the door; the counterweight is that DeepMind remains the deepest bench in the field, and that the people leaving are taking Google’s blessing — and, in Discovery Loop’s case, Google’s investment and cloud contract — rather than walking into a rival’s arms.
Analysts said the timing is deliberate. Google has spent two years catching up in products; the reorganization signals it intends to defend its position in research, where it still holds an edge. “Google is essentially saying the fight has moved back to the level of basic capability,” one person close to the company said. The message to the market is that DeepMind’s mission — building artificial general intelligence safely and profitably — does not depend on any single manager, and that Pichai is willing to consolidate control of the most important technology bets at the top.
Hassabis stays inside the tent. As chairman and chief scientist, he keeps a hand on DeepMind’s direction without the management load, and his voice on safety and capability questions will carry at least as much weight from the new post. Dean leaves to build something new, with Google as an investor and partner. The question the next year will answer is whether the reorganization converts research leadership into product wins. For now, Google has placed its most valuable people where it believes the fight will be decided.
