Google moved Demis Hassabis out of the DeepMind CEO seat. Koray Kavukcuoglu now runs Gemini.

Demis Hassabis is no longer CEO of Google DeepMind. Sundar Pichai told staff on Wednesday that Hassabis becomes chair of the lab plus Alphabet’s chief scientist, a newly created job pointed at AGI. Koray Kavukcuoglu inherits the Gemini org. And Jeff Dean is leaving after 27 years.

What actually changed

Kavukcuoglu steps up as SVP of Google DeepMind and reports straight to Pichai. His remit, in Pichai’s words, is “Gemini model development, Frontier AI research, and the Gemini app and developer teams.” Nobody gets the CEO title. Google DeepMind spent a decade running as a semi-autonomous research house with its own chief executive, and it now has an operating lead who answers to Google’s CEO, with the models, the frontier research, and the consumer app sitting under one reporting line. For developers building on the Gemini API, that reporting line is the substance of the reshuffle. Research priorities and the product roadmap now share a single owner instead of getting negotiated across a corporate boundary, and Google has spent this year watching its flagship Gemini release slip while OpenAI and Anthropic shipped.

Hassabis keeps the scientific brief and gives up the org chart. He stays CEO of Isomorphic Labs, the drug-discovery spinout, and Pichai says the chair role lets him “put his full attention on actively shaping the future of AGI.” Hassabis framed the timing himself in the same memo: he’s “been working towards AGI my whole life and now, like many of you, I feel it is close at hand.” What the memo never does is name a team, a budget, or a compute allocation for that work.

What Jeff Dean takes with him

Dean joined Google in 1999 as employee number 30 and built much of the crawling, indexing, and query-serving machinery under Search. He’s leaving with Sanjay Ghemawat, the company’s other Senior Fellow, plus Gemini co-lead Oriol Vinyals and Google Brain founding member Quoc Le, to start Discovery Loop, a public benefit corporation aimed at automating research. Radical Ventures and Khosla Ventures co-lead the first round, with Kleiner Perkins, Lightspeed, Doerr Capital, and Alphabet taking part. Dean’s pitch, quoted by TechCrunch: “You will get both a higher quantity and a higher quality of experiments, and that will lead to scientific breakthroughs and advances.”

Losing both Senior Fellows in a single memo is the part Google should worry about. M.G. Siegler puts the exits in a longer run that includes Noam Shazeer leaving for OpenAI, and Semafor notes that John Jumper, who shared the 2024 Nobel Prize in Chemistry with Hassabis, recently went to Anthropic. The bench is thin. The people walking out are the ones whose names sit on the papers the current stack rests on.

What Google still hasn’t said

The flagship Gemini upgrade is the loudest gap in the memo. Gemini 3.5 Pro was planned for June and still isn’t out; July’s release was three Flash models with the Pro tier held back. Wednesday’s post gives no date for it. Google also hasn’t said who inherits the chief scientist title Dean held inside Google, or whether that job simply disappears.

Semafor’s Reed Albergotti reported that Hassabis had been handing day-to-day work to Kavukcuoglu for about a year and wasn’t pushed out, citing two people familiar with his thinking. That piece also pegs Google’s models at roughly six months behind the frontier on coding. Reuters reported Alphabet shares fell 4% the day the changes landed.

What this means for you

If you build on Gemini, the reporting line matters more than the titles do. One person now owns the model, the API surface, and the app, so the distance between a research win and a shipped endpoint gets shorter, at least on paper. The near-term test is Gemini 3.5 Pro. A Pro-tier release with a real date says the consolidation worked; another quarter of Flash-only launches says it didn’t. Watch the research side too. Meta ran its own version of this move last year by folding research into product teams, and the papers slowed well before the products sped up. Google just gave its Gemini org a single decision-maker and lost four of the researchers who would have staffed his next bet.