eli5: How is C still the fastest mainstream language?

Question

I’ve heard that lots of languages come close, but how has a faster language not been created for over 50 years?

Excluding assembly.

In: 2072

Answer 1

A big advantage is that the Compilers are ridiculously mature. If there’s an automatic optimization that can be done, the compiler can probably do it. That does a lot to make the language faster.