The tech billionaire, 53, responded to a post on X by Shivon Zilis, with whom he already shares three children – two twins and a one-year-old named Arcadia, whose birthday was on Friday.
News of his latest child comes shortly after 26-year-old MAGA influencer Ashley St. Clair caused a stir online earlier this month after claiming to have given birth to Musk’s 13th child – who is now five months old.
She also wrote that the child could suffer a “life-long impairment” if Musk didn’t respond quickly, before posting again two hours later to say that her messages had been ignored.
Musk has also been accused of ignoring the mother of three more of his children, Canadian musician Grimes.
After Musk took his 4-year-old son X Æ A-Xii, to the Oval Office with him for a high-profile press conference alongside Donald Trump earlier this month, Grimes also shared her displeasure.