It is the best monospace font ever. I've tried a whole host of programming fonts, but nothing is hinted as well for Windows as Jetbrains Mono. It made me move off of Consolas, despite a decade of having gotten used to it.
Digital font designers have to start out by choosing something called the em-height. This is a nonsense holdover from print days, and is especially infuriating because no one agrees on a standard em-height. Therefore, fonts look different despite being set to the same size. Here is a great rant on this: [1]
Lucida Console has a large x-height, which is generally considered helpful in small-size legibility. But it has that in common with both Consolas and Jetbrains Mono.
For me, I can use Consolas, Lucida Console and Jetbrains Mono all down to Size 10 in Git Bash on a shitty 13" 1080p laptop screen. Hence my comment that the ClearType hinting is glorious.