4.1 Which version is reduced by 3 times?

Hello, I’m a newcomer. I learned about babylon very early, but I gave up because the package is too large. I just saw 4.1 shrinking three times today, but I downloaded it and found it was a little bigger than the previous version 4.0. Am I downloading the wrong address or is it smaller than the 4.0 version?

To get the most of the size reduction, you need to leverage our es6 release: ES6 - Babylon.js Documentation