I would like to build speed using alternate picking, I'm not very fond of using the picking techniques I have seen here since my guitar idols don't use it (I think?). I mainly want to be able to pick like Jason Becker, Paul Gilbert or Yngwie Malmsteen.

What I would like is some exercises to help me be able to do this someday which is why I created this very post.

Can you also clarify me if alternate picking at high speeds is the same as tremolo picking?

Thank you for your attention and your time for reading this, and sorry if I made some mistake in my writing since I am not a native speaker :)

I also want to say that I don't wanna play fast for the sake of playing fast, I would like to use it in a musical sense.

my advice would be to go watch Gilbert/ Becker/yngwie
And copy them. use the exercises here to build your speed.

I have not studied the above players so could not comment on what technique they use.