Qu Yunxia's mark of 3:50.46, set at the 1993 National Games, was considered to be one of the toughest world records on the books.
But in a perfectly paced race, Dibaba achieved her goal of breaking that mark. World indoor 800m champion Chanelle Price paced Dibaba through 400m in 1:00.31 and 800m in 2:04.52 before leaving the Ethiopian to finish the race.
Dibaba still had European champion Sifan Hassan for company, but after going through the bell in 2:50.3, the two-time world indoor champion kicked hard.