[wcdolphin]

Would you mind sharing more details of your experience using MypyC? What domain are you working in, and what kind of effort and speedups did you see?

[FreakLegion]

Here's a detailed write-up from one of the Black maintainers: https://ichard26.github.io/blog/2022/05/compiling-black-with.... That's on the low side of the speedup curve, in my experience.