Jeff Dean Leaves Google to Build Discovery Loop, a Science AI Startup Backed by Radical Ventures

Jeff Dean has left Google to co-found Discovery Loop, a new AI company with Sanjay Ghemawat, Quoc Le and Oriol Vinyals. The startup is focused on accelerating scientific research, has backing from Radical Ventures, and is entering the market before it has publicly described a specific product. That makes its founding team and mission unusually clear, while the operating mechanism remains unresolved.

The mandate comes before the mechanism

Discovery Loop is structured as a public-benefit corporation. Its stated mission is to automate machine learning, science and engineering. Those terms describe a broad target: work that produces and applies new knowledge, including the process of developing machine-learning systems themselves.

That is a mission statement, not yet a disclosed technical design. Discovery Loop has not made specific products public, so there is no public basis yet to judge whether it will supply research software, autonomous research systems, engineering tools, or another form of scientific AI. The distinction matters: a company can aim to shorten research cycles without having shown how it will generate, test, validate or deliver results.

What is known at launch

• Dean’s co-founders are Ghemawat, Le and Vinyals, all longtime Google researchers.
• Dean spent 27 years at Google and was formerly its chief scientist; his work included TensorFlow and large-scale distributed computing.
• Radical Ventures is backing Discovery Loop. Alphabet is identified as a founding investor, and Google Cloud as a partner.

A startup still connected to its former home

The Alphabet investment and Google Cloud partnership make Discovery Loop neither a conventional internal Google project nor a clean break from Google’s infrastructure orbit. The arrangement gives the new company a declared connection to its founders’ former employer while its founders pursue a separate corporate structure and research mandate.

Vinyals publicly said on August 5 that he was leaving Google DeepMind to build Discovery Loop with Dean, Le and Ghemawat. His departure follows Dean’s exit after a long career at Google, concentrating senior technical experience inside a company that remains at an early stage.

The Google backdrop is changing too

Discovery Loop’s formation coincides with a reshaped leadership map at Google. Demis Hassabis has become chair of Google DeepMind and Alphabet chief scientist, giving up day-to-day operating responsibilities. Koray Kavukcuoglu now holds responsibility for Gemini models, frontier research, the Gemini app and developer teams, reporting to Sundar Pichai.

The product sequence adds context without proving a cause for the founders’ departures. Alphabet had expected Gemini 3.5 Pro in June; in July, Pichai said it was in testing. Google then released Gemini 3.7 Flash in August, positioning it around coding and agentic workflows and pricing it initially below the original cost of 3.6 Flash.

Capital is a signal, not an operating result

A reported fundraising target has added to the attention around the venture. Business Insider reported that Discovery Loop was seeking $1 billion at an approximate $10 billion valuation, according to an account that emphasized the discussions were not a completed or publicly confirmed transaction. Those figures should therefore be treated as reported fundraising terms, not a settled valuation or proof of commercial demand.

For now, the company’s proposition rests on a defined mission, a high-profile founding group and unusual ties to both a venture investor and Alphabet. The meaningful next evidence will be narrower: a public product, the research task it is designed to handle, and a way to evaluate whether automation actually improves scientific or engineering work.