# Jeff Dean leaves Google after 27 years for AI research startup

> Jeff Dean quit Google to co-found Discovery Loop, an AI research automation startup.

*Discovery Loop, backed by Google itself, aims to automate the scientific discovery cycle.*

By Behzad Hosseini · FeaturedDaily
Canonical: https://featureddaily.com/news/jeff-dean-leaves-google-after-27-years-for-ai-research-startup

**What happened:** Jeff Dean, Google's 30th employee and DeepMind's chief scientist, has left the company. His last day was 6 August 2026.

**The details:** He co-founded Discovery Loop with three other Google veterans: Sanjay Ghemawat, Oriol Vinyals and Quoc Le. Dean and Ghemawat built core Google infrastructure including MapReduce and Bigtable. Vinyals and Dean co-led Gemini. Le co-created sequence-to-sequence learning.

**The numbers:** Backers include Khosla Ventures, Radical Ventures and Alphabet. Google is a founding investor and cloud partner, with a planned joint research framework on machine-learning systems infrastructure.

**Why it matters:** Discovery Loop is a public benefit corporation built to automate the research cycle itself — hypothesis, experiment, analysis — across machine learning, science and engineering, including AI systems designed to improve themselves with little human feedback.

**The context:** Automating scientific discovery is becoming a new AI frontier. OpenAI, Anthropic and various start-ups are all pursuing systems meant to accelerate research.

**Who's affected:** The departure lands the same day Demis Hassabis stepped back from running Google DeepMind, with Koray Kavukcuoglu taking over Gemini.

**The catch:** Dean is reportedly the source of Google's "Frozen" concept — chips with Gemini's architecture built directly into silicon — a project he now leaves behind at Google.

**What's next:** Discovery Loop will operate with Google as both investor and cloud partner, tying the new venture's infrastructure closely to its former parent, according to [Wired](https://wired.com/story/jeff-dean-google-discovery-loop-startup) and [The Next Web](https://thenextweb.com/news/google-deepmind-shakeup-hassabis-jeff-dean-vinyals-discovery-loop).

## Key takeaways

- Dean's last Google day was 6 August 2026, after 27 years
- Discovery Loop co-founded with Ghemawat, Vinyals and Le
- Google, Khosla and Radical Ventures back the new venture

## Sources

- [Jeff Dean leaves Google to start Discovery Loop](https://wired.com/story/jeff-dean-google-discovery-loop-startup) — Wired, 2026-08-05
- [Google named the new boss of Gemini 4. Both of Gemini's co-leads quit the same day](https://thenextweb.com/news/google-deepmind-shakeup-hassabis-jeff-dean-vinyals-discovery-loop) — The Next Web, 2026-08-05