AI Startup Investment 2026 Panorama: Which Tracks Attract the Most Capital and Where Unicorns Are Born

AI startup investment remains hot in 2026, but money is flowing into more niche and defensible directions. Vertical AI (healthcare, legal, education), AI infrastructure, and AI security have become the hottest tracks. Based on Crunchbase and PitchBook data, this article analyzes the AI directions and representative funding cases that attracted the most capital attention in 2026.