The recently-crowned Diving World Cup champions from Great Britain landed the men's 10m synchronised title in Budapest, ahead of Russia in second and Germany in third.
Fresh from last week's World Cup victory in Japan, the Brits were once again in imperious form. They led from the first dive to the sixth, finishing with a score of 477.57.
They were pushed all the way by Russians Aleksandr Bondar and Viktor Minibaev, who held their nerve on the final jump to finish second with 471.96. German duo Timo Barthel and Patrick Hausding finished third with 424.32.
Daley and Lee are still a relatively new diving team, having first teamed up in 2018. But they found their rhythm quickly, and a bronze medal at the 2019 World Championships in Gwangju, Korea secured their berth at the Tokyo 2020 Olympics.
Despite the disruption of the COVID-19 pandemic, the British pair continued their good form at the 2021 Diving World Cup, where they won gold in the venue that will host the Olympics later this year.
While China did not compete at the World Cup, Daley and Lee will take great confidence from these victories as they prepare to challenge the Asian diving giants at Tokyo 2020.
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Elsewhere, Tina Punzel came from behind to win the women's 3m springboard competition.
The German secured top spot with a score of 330.85, ahead of 2018 European champion Chiara Pellacani of Italy in second (321.15) and Sweden's Emma Gullstrand (319.60) in third.
Revenge was sweet for Punzel who, alongside Lou Massenberg, finished second to Pellacani and her 14-year-old teammate Matteo Santoro in the mixed 3m synchronised event earlier this week.