The Complete Guide to AI PRDs: Prototypes Are Drafts, Specs Keep the Judgment
aakashgupta · x · 2026-10-22
This is Aakash Gupta's full-length companion to his AI-era PRD template, written after Google's Gemini product lead sparked debate by saying teams are moving from PRDs to prototypes.
The article argues that what a vibe-coded prototype can't specify is exactly what keeps the PRD valuable: the hypothesis of the change, strategic fit, rollout vs A/B testing, graduation metrics, and non-goals with acceptable side effects.
It also covers the history of the PRD and how it lost its way, a modern AI PRD template, how PRDs interact with vibe coding and AI prototyping, concrete steps for writing one in 2025, and real-world teardowns.
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