Rebuilding how software gets built — with AI
I’m Ivan, founder of Prompt.Build (PTB).
Today’s AI builders hit a ceiling. They’re great for prototypes, but after a handful of edits they forget what they built, hallucinate connections, and break your app. They have no blueprint.
We built the Blueprint Engine to fix that - a proprietary layer that gives AI a living blueprint of your entire app. AI edits the blueprint, our engine compiles it to code and infrastructure.
This Substack documents our journey - the wins, the technical struggles, and what we’re learning while building the missing layer for AI-driven development.
New here? Start with our kickoff post: Vibe-Coding—The promise and the limits.
What you’ll find here
Real experiments with LLMs, compilers, and the limits of AI codegen
Why “vibe coding” breaks at scale - and how we’re solving it
The architecture behind PTBL, Graph IR, and the G2C Compiler
Lessons from shipping AI to Fortune 500 before building PTB
If you’re a builder, founder, or engineer exploring AI-driven development beyond prototypes - this is for you.
Why subscribe
Each post distills one hard-earned insight from the front lines.
No hype. No filler. Just the play-by-play of building the Blueprint Engine — and what we’re learning about how AI actually builds software.
Connect
Follow our progress on Prompt.Build or join the Founding Builders Program for early access.
— Ivan Goh
Founder & CEO, Prompt.Build (PTB)
