Meta boss Mark Zuckerberg has said he is “not holding his breath” over a proposed cage fight with rival Elon Musk.

In a post on the new social media app Threads, Zuckerberg said he had proposed 26 August for the showdown.

Responding to a post on X in which Musk claimed he was training “throughout the day”, Zuckerberg wrote: “I’m ready today… but he hasn’t confirmed.”

The two became direct competitors in July with the launch of Threads.

The social media moguls have been egging each other on in recent months, with Elon Musk claiming on Sunday that their fight would be broadcast live on his social media platform X, formerly known as Twitter.

Musk said that any proceeds from a match would go to veterans charities.

When asked what the point of the bout was by one X user, Musk responded: “It’s a civilized form of war. Men love war.”

The stakes are seemingly high after Meta, which also owns Instagram and Facebook, launched Threads in early July, drawing in more than 100 million sign-ups within days.

Rival X has faced criticism on several occasions since Musk took over the firm (then called Twitter) and made a number of changes to the platform, such as forcing users to log in to view posts. He also carried out mass firings at the company.

Musk posted a message on the social media platform in June claiming he was “up for a cage fight” – a fight which typically involves few rules.

Zuckerberg then posted a screenshot Mr Musk’s tweet with the caption “send me location”, while Musk responded with: “Vegas Octagon.”

The Octagon is the competition mat and fenced-in area used for Ultimate Fighting Championship (UFC) bouts. The UFC is based in Las Vegas, Nevada.

Musk, 52, also wrote: “I have this great move that I call ‘The Walrus’, where I just lie on top of my opponent & do nothing.”

He later tweeted videos of walruses, perhaps suggesting his challenge to the Facebook founder may not have been entirely be serious.

Zuckerberg is a martial arts enthusiast and said on Sunday: “I love this sport and will continue competing with people who train no matter what happens here.”