A PM's guide to building working prototypes with AI
Replace the PRD with a behavioral brief, generate an interactive prototype, iterate in the same environment, then hand engineering a tested prototype.
Replit
Steps
- Pick one user need and hypothesis
- Write a behavioral brief for the AI instead of a PRD
- Generate a first prototype and review direction, not pixels
- Iterate on layout, flow, states and edge cases in the same session
- Share for early feedback
- Hand engineering a working, tested prototype
Source
Replit. Added 2026-10-15.
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