Segments.ai

TLDR

Segments.ai is a Leuven-based AI data labeling platform, the first Belgian startup accepted into Y Combinator (W21), that posted 1936% growth in Deloitte Fast 50 2025 and was acquired by Uber in 2025.

Overview

Segments.ai was founded in Leuven by Otto Debals and Bert De Brabandere, both PhD graduates from KU Leuven. The company built a data labeling and annotation platform for computer vision and ML teams, addressing the need for high-quality training data infrastructure.

Segments.ai became the first Belgian startup accepted into Y Combinator, joining the Winter 2021 cohort (W21). This marked a milestone for the Belgian startup ecosystem and gave the company access to international networks and capital.

The company posted 1936% revenue growth in the Deloitte Technology Fast 50 Belgium 2025. In 2025, Segments.ai was acquired by Uber, representing a successful exit for the founders and early investors.

Key People

• Otto Debals - Co-founder & CEO
• Bert De Brabandere - Co-founder & CTO