Arsenal kept a fifth consecutive away clean sheet as goals from Bukayo Saka, Kai Havertz and Leandro Trossard earned a 3-0 victory at Brighton to move them top of the Premier League.
Manchester City had moved above the Gunners and level on points with Liverpool with a 4-2 win at Crystal Palace on Saturday lunchtime, but Mikel Arteta's side responded with a superb performance to hit the summit.
Arsenal's rock-solid defence had made a shaky start on the south coast before Saka kept his cool from the penalty spot with VAR not overturning the decision after Tariq Lamptey appeared to touch the ball before bringing down Gabriel Jesus.
The hosts were unbeaten in their last 12 home league matches and started to turn the screw in the second half as Arsenal began to lose control until the in-form Havertz tapped in his ninth Premier League goal of the season.
Trossard added further punishment for Brighton, scoring a late third against his former club with a deft chip to make sure Arsenal would move a point clear at the top.
Arsenal should have led inside two minutes when the unmarked Gabriel headed Martin Odegaard's free-kick wide but Brighton could have been in front soon after as Julio Enciso fired over and Jakub Moder's pop shot rolled past the left post.
Saka was the next to miss, bending wide from inside the box having easily drifted in behind Pervis Estupinan and then Bart Verbruggen flung to his left to deny Jesus.
Arsenal had looked shaky early on with Simon Adingra blasting over when well-placed and Lamptey appealing for a penalty when he collided with David Raya in the box.
But the Gunners started to tighten up and drew a mistake from the hosts, Lamptey lunging towards Jesus and bringing down the striker, playing as a left
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