I've been building an interactive nuclear reactor scoping tool to help people build intuition about how different types of nuclear reactors work and cost at different sizes. I ran a bunch of simple reactor simulations and this basically interpolates between them. https://whatisnuclear.com/neutronics-scoping-tool.html

I did a screenshare demo of it yesterday: https://www.youtube.com/watch?v=GQzDfrdf71Y