Ivan Perisic's double secured Coppa Italia glory for Inter as it came from 2-1 down to beat Juventus 4-2 after extra time at the Stadio Olimpico.
Holder Juventus reached the Coppa Italia final after a 2-0 victory over Fiorentina in its semi-final second leg on Thursday (AEST).
Lautaro Martinez's superb double fired Inter into the Coppa Italia final against Milan on Wednesday (AEST), as it ran out a 3-0 victor at San Siro.
Massimiliano Allegri called on Dusan Vlahovic to be more unpredictable after his limited impact for Juventus on his return to former club Fiorentina.
Dusan Vlahovic was kept at bay by old club Fiorentina but Juventus claimed a dramatic late 1-0 win in the first leg of its Coppa Italia semi-final.
Juventus progressed to the Coppa Italia final as it kept Inter at bay to secure a goalless draw in the semi-final second leg and a 2-1 aggregate victory.