44+ Series A AI Startups — $4.8B Raised at $75M Median

Series A AI rounds in 2025-2026 are among the most competitive in venture history. Our dataset tracks 25 Series A AI companies that raised a combined $4.8B at a $75M median — more than 3x the overall Series A median of $21M. This extraordinary concentration of capital reflects both the intensity of AI development and investor conviction in the market opportunity. The $4.8B total makes Series A AI alone larger than the entire funding total of most verticals. Investors are differentiating between foundational AI companies (building new model architectures) and applied AI companies (solving specific business problems with existing models). The most successful Series A AI companies demonstrate a proprietary data advantage, strong technical founding teams, and early enterprise revenue. Key sub-categories attracting Series A capital include AI agents for enterprise workflows, AI security and guardrails, AI-powered code generation, and vertical AI applications for healthcare, legal, and finance. For GTM teams, these 25 companies are high-priority targets with massive budgets. Competition for vendor mindshare is intense — personalized outreach that references their specific AI stack and use case is essential.