A Product Manager's guide to using AI to build working prototypes

Traditional prototyping workflows for product managers are slow and expensive, with each handoff to design and engineering introducing delays and translation loss. AI-integrated workflows can compress this process by generating interactive prototypes directly from a behavioral brief written by the product manager. This approach eliminates major translation points, allowing for faster iteration and higher-quality feedback from stakeholders using a working model. The core skill for PMs shifts to writing precise behavioral prompts for AI, with tools like Replit Agent 4 enabling design and building to occur in the same environment.