Startups from École Polytechnique Feature Prominently in the 2026 LinkedIn Top 20 Ranking

The LinkedIn Top Startups 2026 France ranking, published in mid-October, highlights twenty startups that have placed artificial intelligence at the heart of their business. Mistral AI, Harmattan AI, Dust, and H Company, which are included in the list, were co-founded or are led by alumni of École Polytechnique. École Polytechnique and CentraleSupélec are currently the two main sources of founders for this list.

The Top Startups France ranking, published in mid-October 2026 by LinkedIn News for the ninth consecutive year, highlights startups founded or co-founded by École Polytechnique alumni.

The ranking lists the country's twenty most dynamic startups based on four criteria: workforce growth, interest from platform members, interactions on LinkedIn, and their ability to attract talent from LinkedIn Top Companies.

"I am delighted with the position that engineering schools-and École Polytechnique in particular-have achieved in this ranking. It reflects the strength of the École Polytechnique model, which is based on the interplay between academic excellence, cutting-edge research, and innovation," said Bruno Bellier, Director General of École Polytechnique, as quoted in the LinkedIn News post.

The 2026 edition features fourteen new entrants, eight of which rank in the top ten. The selected companies are independent, were founded less than five years ago, and have at least 30 employees in France.

A ranking driven by AI and disruptive technologies

All the startups on the list place artificial intelligence at the heart of their business and product development. SaaS software providers and marketplaces, which until now had dominated French Tech, are giving way to AI, defense technologies, and deep tech fields such as microbiology. This shift is accompanied by strong investor interest: Mistral AI, which ranks first, raised 3 billion euros on September 8-an unprecedented amount in Europe.

Several companies on the list were founded, co-founded, or are led by École Polytechnique alumni:

• Mistral AI (1st): Arthur Mensch (X2011), CEO, Guillaume Lample (X2011) and Timothée Lacroix (ENS), co-founders. The company develops generative AI models and is forging numerous partnerships with industrial groups.
• Harmattan AI (2nd): Mouad M'Ghari (X2020), co-founder. Founded in 2024, the company produces autonomous drones powered by AI. In 2026, it became France's first defense unicorn.
• Dust (3rd): Stanislas Polu (X2004), co-founder. The startup creates AI assistants and agents for businesses. In May, it announced a €40 million funding round to accelerate its growth in the United States.
• H Company (5th): Laurent Sifre (X2005), co-founder. The company develops AI agents capable of performing tasks autonomously on websites and in apps.

Engineering Schools: the primary source of founders

LinkedIn identified 58 co-founders behind the 20 companies in the ranking. The profile of the founders has changed since 2022: 63% of them are graduates of prestigious engineering schools, compared with one-quarter four years ago, while the proportion of business school graduates has fallen from nearly half to 19%.

École Polytechnique and CentraleSupélec together account for nearly one in four founders. Nearly 16% of founders also completed part of their studies at a university, primarily in research. LinkedIn attributes this shift to the rise of AI and deep tech, which require advanced scientific expertise.

"The ranking also highlights the significant progress that still needs to be made to ensure better representation of women in this sector, as well as the work that remains to foster the emergence or consolidation of regional tech ecosystems," Bruno Bellier further emphasized.

The ranking indeed confirms these two challenges: the founding teams include only two women, and only three of the twenty startups are based outside the Île-de-France region.