This document provides a summary of various reports and analyses on how the artificial intelligence market is segmented and categorized. It discusses how the AI market is difficult to define and quantify given its nascent stage of development. It summarizes key findings from reports by CB Insights, VentureScanner, TechEmergence, O'Reilly, Comet Labs, BCC Research, and Nvidia on how the AI market is broken up into industries, technologies, and application areas. The document concludes that while precisely defining segments is challenging, healthcare, marketing, and finance consistently appear as major focus areas for AI companies.