Does Xcode build CocoaPods every time I build my project?

So, I have a project with a lot of code, and some of its partially open source projects hosted on GitHub, I'm going to remove that code and use CocoaPods to import and manage that code for me.

My question is, will this project build time help? Does Xcode create a complete workspace every time I build my project?

When exactly does Xcode build containers?