Alphabet reshuffles AI leadership as Hassabis steps back, shares fall 5%

Google is shifting its AI organization from research-led to commercialization-driven, moving Gemini development under a new leader as co-founder Sergey Brin tightens his grip on strategy.

Google is centralizing control of its AI business in Silicon Valley, handing Gemini development to new senior vice president Koray Kavukcuoglu as Nobel laureate Demis Hassabis steps back from daily operations to focus on artificial general intelligence research.

"We have to accelerate all this work and stay focused on the AI frontier," Alphabet and Google chief executive Sundar Pichai said in a message to employees announcing the changes.

Hassabis, who won the 2024 Nobel Prize in Chemistry for AlphaFold, becomes Chair of Google DeepMind and Alphabet's first Chief Scientist. Kavukcuoglu, the lab's former chief technology officer, moves from London to Mountain View to lead the division and report directly to Pichai. The restructuring, months in the making, hands operational control of the Gemini model line to a leader seated beside Brin, who has re-emerged as one of the most influential voices in Google's AI strategy since ChatGPT's launch.

Alphabet shares fell about 4 percent on Wednesday and more than 1 percent on Thursday, a roughly 5 percent two-day decline that reflects investor anxiety over rising AI costs, talent attrition and whether Google can convert its research strength into commercial products. The reshuffle coincides with the departure of Jeff Dean, a 27-year Google veteran, who is leaving with three colleagues to found Discovery Loop, an AI startup backed by Google and partnered with Google Cloud.

Power Moves From London to Silicon Valley

The reorganization marks a decisive shift in where Google's AI decisions are made. Kavukcuoglu relocated from DeepMind's London headquarters to Google's Mountain View campus last year and now sits beside Brin, who holds no formal executive title but has become deeply involved in Gemini development decisions, according to people familiar with the matter cited by the Financial Times.

For Hassabis, the move offers relief. He told employees that stepping back from day-to-day management lets him focus on the "big picture" and shape the direction of AGI, which he has said is close at hand and still requires additional scientific breakthroughs. He will continue to lead Isomorphic Labs, the AI drug-discovery company spun out of DeepMind, and advise DeepMind's research and model teams. Yann LeCun, Meta's former chief AI scientist who made a similar management transition in 2018, said Hassabis can better advance his research vision by doing science directly than by issuing orders as a manager.

Research Culture Meets Commercial Pressure

The tension between DeepMind's research culture and Google's commercial needs has been building. One flashpoint was AlphaFold, the protein-structure prediction system that earned Hassabis the Nobel Prize but was released free of charge, generating little direct revenue despite significant investment, according to reports. A person close to Google disputed the characterization of friction, noting Hassabis oversaw the initial launch of Gemini, Google's most advanced model.

Still, the competitive pressure is real. While Google recovered some momentum last year with the Gemini 3 model family and the viral Nano Banana image-editing tool, Anthropic and OpenAI have established early leads in coding tools and enterprise AI — high-margin markets Google needs to win.

The talent exodus extends beyond Dean. Nobel-winning AlphaFold scientist John Jumper has joined Anthropic, and Noam Shazeer, a key figure behind the transformer architecture, moved to OpenAI. A former DeepMind executive now at a rival said several current DeepMind employees have contacted them about jumping ship, the Financial Times reported.

The restructuring carries execution risk during a transition, but it also concentrates decision-making under executives with a track record of shipping. Alphabet shares trade at roughly 22 times forward earnings, a discount to the broader market's AI enthusiasm, reflecting skepticism that Google can match OpenAI and Anthropic in the fastest-growing AI segments. Whether Kavukcuoglu and Brin can accelerate Gemini's release cadence — Google has yet to launch the next version of its flagship model despite an earlier June timeline — will determine whether the market re-rates the stock.

This article is for informational purposes only and does not constitute investment advice.