Full-stack AI Companies

TL;DR

A full-stack AI company uses AI agents to directly compete in an industry rather than selling AI tools to existing players.

Key Points

• 1.Two paths exist when AI can automate an industry. You can sell AI tools to incumbents, or go full-stack by launching your own company staffed entirely with AI agents and competing directly.
• 2.Legal services are the flagship example. Instead of selling an AI agent to law firms, a founder could start their own AI-staffed law firm and undercut traditional firms on cost and speed.
• 3.Y Combinator is actively seeking full-stack AI founders. YC believes this model works best against slow-moving incumbents and wants to fund ambitious builders willing to displace industries rather than serve them.