The author ran the same one-shot prompt in Grok Build with Grok 4.5 and Grok 4.6, then compared the resulting apps and designs. The author considers 4.6 a clear improvement over 4.5, saying it can even alternate for the lead with Fable on design tasks.
In the comments, the author added that the comparison video mainly involved roughly explaining the idea's flow to Codex and then having it organize the result, rather than writing an extremely long specification.
Build a polished [PRODUCT TYPE] for [TARGET USER].
Core flow: [STEP 1] → [STEP 2] → [STEP 3].
Use your design judgment for the visual language, but keep the hierarchy clear and the main action obvious.
Make the first version runnable. After implementation, test the core flow and refine the UI once based on what you observe.This case supports a short prompt structure built around “goal, core flow, visual autonomy, and one real validation.” The complete original prompt was not published, so the template should not be treated as the author's original text.
Grok 4.6