Compile times, I can live with. You can run previous models on the gpu while your new model is compiling. Or switch from cargo to bazel if it is that bad.

What compile times do you work with? I use bazel and it still hurts

It is a tradeoff, but I prefer my checks at compile time to runtime. Python can be brittle and silently wrong.

What kind of type checking do you think Rust does at runtime?

Google it and try it yourself.

I’m familiar with Rust’s runtime checks, Java has more of those. I’m curious what exactly do you mean.