Torres netted six goals in six Europa League appearances, including in the final as the Blues beat Benfica in the Amsterdam final on Wednesday.
"It's more than just me," said Benitez, when asked about Torres' improvement, before he cited assistant coaches Steve Holland, Boudewijn Zenden and fitness coaches Paco de Miguel and Chris Jones for their efforts.
"They have improved him. He has more pace, more confidence and he can score important goals for us. He has to keep working in the same way and I think that with a pre-season he will have plenty of team to improve himself physically.
"It's a question of keeping training the same way that he's training now and with confidence, he has the potential."
Torres, who last found the net in the Premier League against Aston Villa in December, has cut a forlorn figure at times, ploughing a lone furrow up front.
Benitez added: "When you see a striker that is not scoring as many goals as he wants to score, this can happen. Now he's enjoying himself."