Cumberbatch has been cast as the villain opposite Pine's Captain Kirk in JJ Abrams's upcoming sequel to his Star Trek reboot.
"Benedict is fantastic," Pine told MTV News. "He's just so good. He's super talented, and we are more than grateful to have him on board.
"Benedict has got this intensity about him, and he's obviously extremely intelligent and articulate.
"His vocal quality is something else. He obviously is, unlike many of us, like, an actually trained actor. He actually studied for it!"
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He added: "[You'll love] everything. He's really talented. I think it's all going to be love - a mad amount of love."
Cumberbatch has said that he was "over the moon" to be cast in the sci-fi sequel, adding that he is "hugely, hugely excited" and "very, very flattered".
Abrams has confirmed that Star Trek 2 will be shot in 2D before being converted into 3D ahead of release.
Watch Simon Pegg talk about the return of Star Trek below: