Surya Midha
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From left, Adarsh Hiremath, Brendan Foody and Surya Midha. Photo: Mencor |
Age: 22
Net worth: 2,2 billion USD
Source of wealth: AI software
Nationality: US
Surya Midha, along with two close high school friends, Brendan Foody and Adarsh Hiremath, co-founded the AI startup Mercor in 2023 in San Francisco. The company specializes in assisting Silicon Valley firms with AI model training.
In 10/2025, private investors valued the startup at 10 billion USD, making them billionaires. Midha, who transitioned from chief operating officer (COO) to company president in 10/2025, is the youngest of the trio, two months younger than his two partners.
Brendan Foody
Age: 22
Net worth: 2,2 billion USD
Source of wealth: AI software
Nationality: US
Brendan Foody, a co-founder of Mercor, currently serves as chief executive officer (CEO). He, along with Surya Midha and Adarsh Hiremath, each hold a 22% stake in the company. In 9/2025, Mercor announced estimated annual revenue of 500 million USD.
Adarsh Hiremath
Age: 22
Net worth: 2,2 billion USD
Source of wealth: AI software
Nationality: US
Adarsh Hiremath is a co-founder of Mercor, currently holding the position of chief technology officer (CTO). After the startup received investment in 10/2025, Hiremath, along with Brendan Foody and Surya Midha, became the three youngest self-made billionaires globally.
Michael Truell
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Anysphere founders from left to right: Aman Sanger, Arvid Lunnemark, Sualeh Asif and Michael Truell. Photo: Anysphere |
Age: 25
Net worth: 1,3 billion USD
Source of wealth: AI software
Nationality: US
Michael Truell, along with three friends from the Massachusetts Institute of Technology (MIT), co-founded the coding startup Anysphere in 2022 in San Francisco, California. The company is known for its Cursor tool. Truell currently serves as the company's CEO.
This AI-powered code editing software is used by millions of programmers at 50,000 businesses, including prominent names like Nvidia, Adobe, and Uber. The company estimates annual revenue exceeding one billion USD.
Aman Sanger
Age: 25
Net worth: 1,3 billion USD
Source of wealth: AI software
Nationality: US
Aman Sanger was a high school friend of Michael Truell at Horace Mann School in New York. In 11/2025, their startup was valued at 29,3 billion USD after raising 2,3 billion USD in a funding round co-led by leading venture capital firms Accel and Coatue.
Before founding Anysphere, Sanger interned at the hedge fund Bridgewater Associates and Google. He also founded his own AI consulting firm.
Sualeh Asif
Age: 25
Net worth: 1,3 billion USD
Source of wealth: AI software
Nationality: Pakistan
Sualeh Asif, originally from Karachi, Pakistan, represented his country at the International Mathematical Olympiad from 2016 to 2018. While in college, he launched an AI application search engine company before co-founding Anysphere.
Arvid Lunnemark
Age: 26
Net worth: 1,3 billion USD
Source of wealth: AI software
Nationality: Sweden
Arvid Lunnemark was the oldest co-founder of Anysphere but left the company in 10/2025 to establish a new startup called Integrous Research, focusing on developing safer AI systems. Hailing from Sweden, he was a Mathematical Olympiad champion and interned in quantitative trading at Jane Street and as a software engineer at Stripe.
Fabian Hedin
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Lovable co-founders Fabian Hedin (black shirt) and Anton Osika. Photo: Lovable |
Age: 26
Net worth: 1,6 billion USD
Source of wealth: AI programming
Nationality: Sweden
Hedin launched the programming startup Lovable with co-founder Anton Osika (35) in 11/2024. This company uses AI to help millions of non-programmers instantly transform ideas into websites, applications, and online business models.
After just 8 months, Lovable estimated its annual revenue could reach 100 million USD from subscription fees, making it the fastest-growing software startup in history. Hedin currently serves as Lovable's chief technology officer (CTO). Private investors valued the company at 6,6 billion USD in December.
Shayne Coplan
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Billionaire Shayne Coplan. Photo: Polymarket |
Age: 27
Net worth: 1 billion USD
Source of wealth: prediction market platform
Nationality: US
In the early days of the 2020 pandemic, Coplan, a New York University (NYU) dropout, founded the prediction market platform Polymarket. This platform allows users to bet on future events, such as economic indicators, weather patterns, awards, and election results.
In July, Polymarket acquired QCEX, a derivatives exchange and clearinghouse licensed by the US Commodity Futures Trading Commission (CFTC), which helped the platform receive federal approval to operate in November.
In October, Intercontinental Exchange, the group that operates billionaire Jeff Sprecher's global stock exchange, invested 2 billion USD in Polymarket at a 9 billion USD valuation, making Coplan a self-made billionaire.
Alexandr Wang
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Scale AI co-founder Alexandr Wang. Photo: Masters of Scale |
Age: 28
Net worth: 3,2 billion USD
Source of wealth: AI
Nationality: US
Wang co-founded the startup Scale AI with Lucy Guo (31) in 2016. The two later disagreed on strategy, and Guo left the company in 2018. He remained, serving as CEO until June, when Meta acquired a 49% stake in Scale AI for 14 billion USD.
After the deal, Wang joined Meta as director of AI. In 2022, he was the world's youngest self-made billionaire.
Luana Lopes Lara
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Kalshi co-founder Luana Lopes Lara. Photo: Linkedin Luana Lopes Lara |
Age: 29
Net worth: 1,3 billion USD
Source of wealth: prediction market platform
Nationality: Brazil
As an international student from Brazil, Luana Lopes Lara met Tarek Mansour from Lebanon at the Massachusetts Institute of Technology (MIT), where both studied computer science. They grew closer while interning at the quantitative trading firm Five Rings Capital in New York in 2018.
In the same year, they co-founded the prediction market startup Kalshi, which allows users to bet on election outcomes, sports matches, cultural and entertainment events, and other areas. Mansour and Lopes Lara became billionaires this month after Kalshi raised one billion USD at an 11 billion USD valuation. The deal also made Lopes Lara the world's youngest self-made female billionaire.
Tarek Mansour
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Kalshi co-founder Tarek Mansour. Photo: Kalshi |
Age: 29
Net worth: 1,3 billion USD
Source of wealth: prediction market platform
Nationality: US
Tarek Mansour, Kalshi's co-founder, serves as CEO and holds a 12% stake. The prediction platform received government approval to operate in 2020. In 2024, they were licensed to offer presidential election betting, marking the first time the US has allowed legal presidential election betting in over a century.
Ed Craven
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Ed Craven. Photo:X/Eddie |
Age: 29
Net worth: 2,8 billion USD
Source of wealth: online casino
Nationality: Australia
Craven co-founded a cryptocurrency-powered online casino in Australia in 2017 with billionaire Bijan Tehrani (31). The business boomed during the pandemic when it began paying content creators to livestream gambling activities. According to Forbes estimates, this casino generated 4,7 billion USD in gross revenue in 2024 and is currently valued at nearly 6 billion USD.
Phi An (according to Forbes)
