Yes
It rewrote it to be 40x faster
josephg on Hacker News
40x faster
In the thread “A thousand fewer paths to root”, replying to this comment
Helped: Analyzing cloud spend and rewriting Python to Rust.
Got in the way: Company refused to implement suggestions due to departmental silos.
… Then I took the computationally expensive parts that remained and asked Claude to rewrite it from Python to rust and optimise. It rewrote it to be 40x faster. I suspect our $2.5M annual cloud bill could be replaced with a Mac mini. …