AI’s Most Active Startups Are Becoming Serial Acquirers

Some of the AI industry’s fastest-growing startups are becoming serial acquirers, buying smaller companies to fill product gaps, enter new markets and bring specialized teams in-house, a review of Crunchbase data shows. While AI giant OpenAI is by far the busiest of these buyers, well-funded startups in legal tech, customer service and software development have also made multiple acquisitions this year.

The buying spree has pushed acquisitions of AI startups by other venture-backed AI companies to 195 through Sept. 29, according to Crunchbase data — 14% more than in all of 2025. Yet the number of buyers grew just 2%, indicating that increasingly active acquirers are driving much of the increase. READ MORE