The three points, coupled with Tottenham’s shock 3-1 defeat to Wolves at Wembley, has given the Reds a huge lead ahead of Manchester City’s clash with Southampton on Sunday.
Klopp was understandably pleased with the result, and quickly praised his players.
“It’s clear it was a wide game. We were really good and did exactly what we wanted to do. We wanted to press them and cut off their build up,” Klopp told BT Sport.
“They pressed us as well so it was wild. But then when you get the ball you need to calm down.
“The response [to Arsenal’s goal] was world class. We stayed calm and really forced the mistakes.
“Bobby’s [Firmino] second when Sadio [Mane] won the ball. Wow. It was perfect defending.
“We knew in the second half that the game wasn’t finished so we wanted to control it.”
Ainsley Maitland-Niles gave Arsenal a shock lead before Firmino’s brace, a Mane strike and a Salah penalty gave Liverpool a 4-1 lead at the break.
Salah had the option of taking another penalty in the second-half, but allowed his Brazilian teammate to complete his hat-trick.
“Mo Salah gave the penalty to Bobby and I almost cried because we all know how much Mo wants to score goals. It was really nice,” Klopp added.
“Overall 5-1 against Arsenal doesn’t happen too often so I’m really happy with the boys.”
The German boss was asked to reflected on Liverpool’s year as a whole, his response was positive.
He said: ”Not too bad. The boys have made a big step but it’s important to show it’s a positive process. In 2018 I have nothing to moan about.”
As well as Firmino, Salah, Mane and Virgil van Dijk, Klopp hailed Georginio Wijnaldum for his display in the Liverpool midfield.
“We know how good he Wijnaldum is. Fabinho hit two very average passes and he was shaky in the next couple of moments. That can happen it’s all part of the process,” he said.
Liverpool face Manchester City on Thursday in a crucial game in this season’s title race.