This album, released in September 2013, became a turning point for the band, not only for its darker and more enveloping sound that was highly praised by critics, but also for its commercial success. Songs like Do I Wanna Know?, which even reached the Billboard Hot 100, or R U Mine?, Why'd You Only Call Me When You're High?, One for the Road, Arabella, and Snap Out of It, were among the singles that propelled the album. The participation of artists like Josh Homme, who had already collaborated with Alex Turner on Queens of the Stone Age's ...Like Clockwork, brought a special energy; Turner described his contribution on Knee Socks as something he had never heard before. The album's title, AM, originated from an idea by Turner inspired by The Velvet Underground's compilation album VU.
AM not only topped the charts in the UK, becoming their fifth consecutive album to do so, but also marked their biggest success to date in the United States, reaching number six on the Billboard 200. It was recognized with the Brit Award for British Album of the Year and received major nominations. The way it was recorded, with a focus on creating a "studio album," and the exploration of new sounds, positioned it as a work that resonated strongly with the public and critics, consolidating the sonic identity of the Arctic Monkeys.