What is it beyond a linter. Also: speed is good, but when it comes to linting, that's not what I'd place first as a feature. How good is the code at spotting

What is it beyond a linter. Also: speed is good, but when it comes to linting, that's not what I'd place first as a feature. How good is the code at spotting my potential mistakes would come before speed for sure. Hence: it's fast, but is it in any way better than the other solutions out there?