I tried my prompt with Claude and with this tool. There is no discussion with this tool. It just generates (a pretty cool) diagram.

I'll probably stick with Claude for now.

A killer feature would be a discussion loop that slowly refines the model in plaintext before committing to a diagram.

That's also just something you can include in the prompt in Claude, instruct claude to ask questions until it is completely clear about the database schema you need. See this video: https://youtu.be/i4Jfl1IW-_U?si=yXiFvanIjGgZjQRA&t=178