Robots and MIT
Gruenstein told The Robot Report he has been building robots since he was 9. He met co-founder Alon Kosowsky-Sachs as an undergraduate at MIT.1,2
In 2020 he joined Kosowsky-Sachs at an MIT lab that developed robot AI with deep learning, where both focused on the shortage of robot training data.3
Leading Tutor
The two founded Tutor in 2021 out of MIT CSAIL. Gruenstein announced its $34 million Series A, led by Union Square Ventures, in December 2025.1,3
On November 2, 2026 Tutor raised a $75 million Series B led by Andreessen Horowitz, bringing its total to $117 million.4
We can hardly build robots fast enough.The Next Web, November 2026
Links
Sources
- The Robot Report, Tutor Intelligence builds Data Factory to train robot AI in the real world, May 5, 2026, accessed November 3, 2026
- Andreessen Horowitz, Investing in Tutor Intelligence, accessed November 3, 2026
- Tutor Intelligence, Series A funding announcement letter, accessed November 3, 2026
- The Next Web, Tutor Intelligence raises $75M from a16z to put robots to work by the hour, November 2026, accessed November 3, 2026
