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Jeff Dean Leaves Google for Discovery Loop Startup

#Google#AI Industry#Startups#AI for Science

What Discovery Loop does: automating the experimental loop

Discovery Loop is the company Jeff Dean announced on X on August 5, 2026. The experimental loop it wants to automate is the cycle the company's website describes: propose an experiment, implement and run it, examine the results, then iterate. The website says the scientific method entails repeating this loop and that it is hard to scale with manual effort.

A public benefit corporation with a research mission

Dean's post calls Discovery Loop a Public Benefit Corporation whose mission is to automate machine learning, science, and engineering to accelerate discoveries and progress. Sundar Pichai, the CEO of Google and Alphabet, uses the same label in his message to Google DeepMind teams and calls it an independent public benefit corporation.

The website puts the mission in plainer words. The company is building AI solutions that automatically solve important problems in machine learning, science, and engineering.

Discovery Loop starts with machine learning research

In a reply in his thread, Dean says the general approach is to automate the experimental loop. He says the approach applies across many different fields of science and engineering, and that the team will initially focus on machine learning (ML) research and engineering.

The website explains how the loop would run. Using frontier AI models and large-scale computational infrastructure, its systems will be able to rapidly propose, run, and learn from evaluations.

That allows thousands of experiments to run in parallel, which the company says compresses iteration time. Under the heading "Act as Our Own First Customer", the website adds that the company will use these automated ML capabilities on its own technology stack before it expands to other domains.

The long-term targets: NAE Grand Challenges

The website says the company believes its approach can solve any learning loop with measurable outcomes in science and engineering. It says it is ultimately building systems capable of taking on the National Academy of Engineering (NAE) Grand Challenges. The examples it names are better medicines, health informatics, economical solar energy, access to clean water, securing cyberspace, and the tools of scientific discovery.

we are founding Discovery Loop (@DiscoLoopAI), a Public Benefit Corporation whose mission is to automate machine learning, science, and engineering to accelerate discoveries and progress. ／ Our general approach is to automate the experimental loop. We think this approach is broadly applicable across many different fields of science and engineering. We’ll initially focus on ML research and engineering — From the announcement post and the reply in the same thread dated August 5
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you propose an experiment, implement and run it, examine the results, then iterate to refine your approach. ／ By utilizing frontier AI models and large-scale computational infrastructure, our systems will be able to rapidly propose, run, and learn from evaluations. ／ This approach allows for the parallel execution of thousands of experiments ／ We will use these automated ML capabilities to rapidly optimize our own technology stack before expanding to other domains. ／ Ultimately, we are building systems capable of taking on National Academy of Engineering (NAE) Grand Challenges — From the passages on the experimental loop, the approach, the plan to apply it internally first, and the Grand Challenges
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The founders: Jeff Dean and three longtime collaborators

Discovery Loop has four founders: Jeff Dean, Sanjay Ghemawat, Oriol Vinyals and Quoc Le. Dean says the four have worked together for 14 to 30 years and have helped build some of the world's most used products, infrastructure and AI models.

The website adds the company's own description of the team. It says the founders are three of the most-cited researchers in artificial intelligence and two of the most-cited in distributed systems.

It also lists systems the team has built, among them MapReduce, BigTable, Spanner, TensorFlow, word2vec and Gemini, without assigning them to individuals. This is the company's self-description, not an outside assessment.

Sanjay Ghemawat, the co-founder named in Google's message

Google's message refers to Sanjay Ghemawat as a Google Senior Fellow and says he and Dean are launching the new corporation. Pichai writes that the two helped drive some of the most significant technology transitions, from early search infrastructure to the neural networks that helped create the modern AI era.

Oriol Vinyals and Quoc Le in the founding team

Dean's post names Oriol Vinyals and Quoc Le with their X handles, and the website lists both in the founding team. Google's message does not mention either of them. The count of four therefore rests on Dean's post and the website, not on Google's message.

along with my longtime friends and collaborators @Sanjay_Ghemawat, @OriolVinyalsML and @quocleix ／ The four of us have worked together for 14 to 30 years, and have helped build some of the world’s most used products, infrastructure and AI models — From the passages naming the co-founders and the years of collaboration
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Our founding team — Jeff Dean, Sanjay Ghemawat, Quoc Le, and Oriol Vinyals — has a shared history of deep friendship and decades of close and impactful collaboration. ／ Collectively, we represent three of the most-cited researchers in artificial intelligence and two of the most-cited researchers in distributed systems. — From the team section
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Jeff and Google Senior Fellow Sanjay Ghemawat are launching an independent public benefit corporation to accelerate discoveries in ML, science, and engineering. Jeff and Sanjay helped to drive some of the most significant technology transitions, from our early search infrastructure to the neural networks that helped create the modern AI era. — From the passage on the new corporation and the two founders it names
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Jeff Dean leaving Google, with Google as founding investor

Google announced Dean's move in a message from Sundar Pichai to its DeepMind teams. The message says Google will remain involved with the new company as a founding investor and Cloud partner.

Pichai's message on Dean's 27 years at Google

Pichai calls Dean's 27 years at Google an incredible run and says the company is excited to support what he does next. He adds that it has been a privilege to work alongside Dean and Ghemawat.

On the relationship afterward, the message says Google will continue to work with them as a founding investor and Cloud partner. Google will also collaborate with them on a research framework for ML systems and related infrastructure advances.

The same message announced DeepMind leadership changes

The same message covers Google DeepMind (GDM) leadership. Demis Hassabis becomes Chair of GDM and Chief Scientist of Alphabet, and keeps leading Isomorphic Labs.

Koray Kavukcuoglu becomes SVP of Google DeepMind, reporting to Pichai. The details are in the Google DeepMind leadership change, and you can find more Google coverage on the site.

Lastly, after an incredible 27-year run, Jeff Dean is at a moment where he wants to try something new, and we’re excited to support him in that. ／ On a personal note, it’s been a privilege to work alongside Jeff and Sanjay, and I wish them all the best! We’ll continue to work with them as a founding investor and Cloud partner, and collaborate on a research framework for ML systems and related infrastructure advances. ／ Demis will become the Chair of GDM and Chief Scientist of Alphabet, while continuing to lead Isomorphic Labs ／ will step up as SVP of Google DeepMind, reporting to me — From the passages on Dean's departure, Google's continuing role, and the DeepMind leadership changes
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Next steps for Jeff Dean's startup: office space and hiring

Jeff Dean's thread on August 5 lists what the founders will do first. The immediate order of business is to find office space and hire a founding team over the next few weeks.

Dean also says the team created a pitch deck to tell a handful of VC firms about themselves and shared a few slides from it. The thread describes the culture the founders want: technical excellence, teamwork, respect, and ambition.

Hiring a founding team over the next few weeks

The website says the company is building a lean, in-person team and links to a careers page for applicants. It also imagines a future in which a handful of people carry out research and engineering faster and at higher quality than massive teams do today.

Our immediate order of business is to find office space, and hire an amazing founding team over the next few weeks. We want to create an awesome environment with a great culture of technical excellence, teamwork, respect, and ambition. — From the reply in the thread dated August 5
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Imagine a future where a handful of people can conduct scientific research and engineering tasks much more rapidly, and with higher quality, than massive teams of scientists and engineers do today. ／ We are building a lean, in-person team to execute this transformative vision. — From the "What's Next" section
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FAQ

What does Discovery Loop do?
It is a Public Benefit Corporation whose mission is to automate machine learning, science, and engineering to accelerate discoveries and progress. Its general approach is to automate the experimental loop, starting with machine learning research and engineering.
How many founders are there?
Four: Jeff Dean, Sanjay Ghemawat, Oriol Vinyals and Quoc Le. Dean writes that the four of them have worked together for 14 to 30 years. Google's message names only two of them, Dean and Ghemawat.
Is Discovery Loop still tied to Google?
No. Google says it will continue to work with the founders as a founding investor and Cloud partner, and will also collaborate on a research framework for ML systems and related infrastructure advances.