I did a goodly chunk of vibe coding over the summer and I found that the best language for me was Rust implementations with Python bindings for interface. A few reasons:

- Everything about rust enforcing correctness catches lots of bugs

- Using a high-level API means I can easily hand-check things in a repl

- In addition to tests, I required a full “demo notebook” with any PR — I should be able to read through it and confirm that all the functionality I wanted has actually been implemented

If the philosophy is (and it should be) “loc is free”, it’s worth thinking about how we can make LLMs produce more loc to give us additional comfort with correctness. Language choice is very much a way.