alt Hacker NewsHow exactly does specifying the language, framework, and architecture in advance save a meaningful amount of tokens? I'd expect saying "make me an app" and "make me an app using Swift and SwiftUI" would be pretty close in terms of token usage. You save maybe one look up by the LLM for "what is the preferred language for writing an application for iOS?".
That's obviously pretty specific to iOS - or MacOS - where there's a single blessed path. Elsewhere, especially in web dev, unless you really don't care about what you get or are making something very simple, you better be ready to provide specifics.