A prototype proves one thing
A prototype can show that an idea works on selected examples. A product needs to handle ordinary inputs, failures and repeated use.
Build the surrounding workflow
Consider onboarding, permissions, data handling, support and recovery. The model is one component inside that experience.
Evaluate before expanding
Use representative examples and record both successful and unsuccessful results. Release changes in a way that lets you identify regressions.
Key takeaways
The route to a product is a sequence of useful, measured decisions. Keep the core task clear as the surrounding system grows.