Β· foody is one of the trio of 22-year-olds from the bay area who went from debate teammates to self - made billionaires on the back of a huge funding round for their ai recruiting startup, mercor. Β· discover the youngest self - made billionaires in 2025. The year saw a historic wealth surge led by ai and prediction markets, as startups fueled the wealth surge. Click on a trending topic to learn more about it. Military train ai systems. Yahoo is using openai to generate summaries for this content. Now, at the age of 41, zuckerberg has an estimated $209 billion net worth. A computer science whiz who dropped out of mit, he co-founded scale ai, a machine learning startup that helps companies like meta and the u. s. The core fact is stark: According to forbes, he was just 23 years old at the time. Β· wang is the world’s youngest self-made billionaire thanks to his artificial intelligence unicorn scale ai, which raised $1 billion at a $13. 8 billion valuation in may. Ai-generated content sometimes contains inaccurate or incomplete information. As of 2025, guo is the worlds youngest female self - made billionaire , due to her stake in scale ai. Β· mark zuckerberg became the youngest self-made billionaire back in 2012 when he took facebook public. Β· at just 25, alexandr wang became the worlds youngest self-made billionaire. Three 22-year-olds have become the youngest self-made billionaires in history, edging past mark zuckerberg, who first reached that milestone at 23.