The demo works on Saturday. By feature four, every new prompt breaks something that used to work.
I've heard that story from founder after founder, and it's never the model's fault. Nothing ever wrote down what the product actually is. No requirements, no spec, no definition of done. So every prompt is a fresh guess, and guesses don't add up to a system.
Senior engineers have always started from the spec. Most people building with AI skip it, because no tool made them do it.
So, for everyone here who has shipped something with AI:
Most AI builds break around feature four because nothing ever defined the product. Codalio starts there. Describe your idea in plain English and it writes a validated PRD and spec: user flows, data model, user stories and acceptance criteria. It then generates code against that spec, writes the tests from the same criteria, and traces every change back to a requirement before the merge. Codalio Cloud takes you 95–98% of the way to production grade. Start with a free PRD.
