Google AI veterans launch Discovery Loop startup

Jeff Dean, a foundational figure in Google's artificial intelligence research and one of the company's earliest employees, has left after 27 years to launch a new AI startup called Discovery Loop. He is joined by three other prominent Google AI veterans: Sanjay Ghemawat, Oriol Vinyals, and Quoc Le. The departure, reported on August 5, 2026, triggered a drop in Alphabet's stock price and raises questions about Google's ability to retain top talent in a fiercely competitive field.

The new company, structured as a public-benefit corporation, aims to automate the scientific discovery process using artificial intelligence. The founders plan to build AI systems that can autonomously propose, run, and evaluate experiments, a concept they refer to as a "discovery loop." Their initial focus will be on automating machine learning research itself, using their own company as the first test case. They then intend to expand the technology into domains including drug development, chip design, biology, and clean energy.

In an interview, Dean explained the core idea, stating that by automating classical experimental-loop aspects with machine learning models, they hope to augment human scientists...