Marvel Studios is reportedly investing a massive $1 billion in its upcoming crossover epic Avengers: Doomsday, making it the most expensive film ever. The massive budget includes a staggering portion allocated to its ensemble cast and sets the stage for what could be Marvel’s most ambitious and financially risky project to date.

According to reports from Collider, the film has already racked up $8 million in just pre-production costs, which is three times more than what was spent during the same phase for Ant-Man and the Wasp: Quantumania, which itself had a final budget of $388 million. Industry insiders now estimate Doomsday’s total production cost could land between $500 and $600 million. Add marketing and global distribution into the mix, and the total expenditure is expected to push the film’s price tag to a billion dollars.

The previous record-holder, Star Wars: Episode IX – The Rise of Skywalker, had a production budget of $447 million.

In Doomsday, Chris Hemsworth returns as Thor, Tom Hiddleston reprises his role as Loki, and The Mandalorian star Pedro Pascal joins as Reed Richards, aka Mr. Fantastic. Vanessa Kirby has been cast as Sue Storm.

In one of the film’s most surprising twists, Robert Downey Jr. is returning to the Marvel Cinematic Universe, but not as Iron Man. Instead, he will portray the film’s central villain, Doctor Doom.

A substantial chunk of the budget is reportedly going toward the fees for this high-caliber cast, which includes some of the biggest names in Hollywood.

Directed by Joe and Anthony Russo, who were the forces behind Marvel’s record-breaking hits Avengers: Infinity War and Avengers: Endgame, Doomsday is shaping up to be the studio’s grandest crossover event to date. The film is set to bring back all its famous characters, including the Avengers, Wakandans, X-Men, the Fantastic Four, and the New Avengers, to face off against Doctor Doom.

Slated for release on December 18, 2026, the movie is part of Phase Six of the MCU and is expected to tie directly into the following film, Avengers: Secret Wars, which is also rumoured to carry a similar whopping budget.

Will the movie be a hit?

Despite the excitement around the project, the billion-dollar price tag comes with a lot of financial pressure. Box office analysts warn that Avengers: Doomsday will need to gross well beyond $1 billion globally just to cover its costs. Factoring in marketing, global distribution, and theater cuts, the film would have to generate considerably more than that to be considered profitable.

For context, 2019’s Avengers: Endgame grossed $2.79 billion worldwide and currently holds the record as the second-highest-grossing film of all time. Marvel is likely betting that Doomsday, with its whopping budget and impressive cast, can replicate or even surpass that success.