❯ Hassabis Steps Down as Google DeepMind CEO; Jeff Dean Departs to Found Discovery Loop

DOUBLE EXITGoogle announced two personnel moves on the same day: Hassabis is stepping down as Google DeepMind CEO, becoming chairman of the lab and Alphabet chief scientist, with former CTO Koray Kavukcuoglu taking over as senior vice president; chief scientist Jeff Dean is leaving after 27 years of service to start a company. Hassabis said on X that the new role lets him focus on long-term strategy and channel more energy back into drug-discovery company Isomorphic Labs.

HANDOFF & EXITKavukcuoglu had already been doubling as Google’s chief AI architect; with this move he goes directly from technical lead to the lab’s top job, keeping both titles. Jeff Dean joined Google in 1999 as employee No. 30, wrote MapReduce and Bigtable, co-founded Google Brain in 2011, and was the driving force behind the TPU project — all of Google’s large models today run on that self-developed chip line. His new company is called Discovery Loop, registered as a public-benefit corporation with one mission: automating machine learning, scientific research, and engineering research. Leaving with him are Sanjay Ghemawat, Oriol Vinyals, and Quoc Le — a quartet that is arguably the longest-running collaboration in Google’s research system. Google is serving as founding investor and cloud provider, with Radical Ventures and Khosla Ventures co-leading the seed round; the round has yet to close and the valuation is undisclosed.

TALENT GATEFor recruiting leads at other labs, this is a door that has suddenly opened. Nathan Lambert of the Allen Institute for AI publicly put out the call on X that same day, saying anyone on the Gemini team who wants to work on open-source models can come to him for an introduction. What’s really being rewritten is the retention assumption for Google’s internal research talent: for the past decade, “working with Hassabis and Dean” was itself a reason to stay; now both reasons have been pulled away at once, while the successor’s role leans more toward product and engineering integration. Alphabet used a seed investment to keep Dean within its orbit — securing a collaboration channel while conceding that it could not retain him.