I asked who was the founder of my company and it gave me an answer. I was not expecting it to get it correct.I guess AI hallucination problem chooses when to happen. I get where you're coming from. Prompts alone often can't stop hallucinations. Improving training and data quality is key. Let's keep exploring other ways.
An examples of application that I use the gpt to help build is https://app.tivateonline.com/pomodoropal it a personal tool am building to manage my tasks. It help me to generate the color scheme and help me to define the pages I will need for the app. Yes `bare` gpt4 or gpt4o are able to give similar result but am working on upgrading it for the result to be better.