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Lucy Guo | |
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Born | [ citation needed ] California, U.S. | October 14, 1994
Education | Carnegie Mellon University (Dropped out) |
Known for | Co-founder of Scale AI |
Lucy Guo is an American social media influencer and engineer who co-founded Scale AI. [1] In 2022, she founded her second start-up, known as Passes. [2] As of 2025, Guo is the world's youngest female self-made billionaire, due to her stake in Scale AI. [3] [4] [5]
Guo was raised in Fremont, California, by Chinese immigrant parents who worked as electrical engineers. She began coding at a young age; as a teenager she taught herself programming and earned money by developing bots for the online game Neopets and selling the in-game assets for profit. [6] Guo enrolled at Carnegie Mellon University where she studied computer science [6] but dropped out in 2014 after being selected for the Thiel Fellowship, [7] [8] a two-year $100,000 grant for young people to pursue entrepreneurial projects instead of completing their studies. [6]
After dropping out of Carnegie Mellon to pursue a Thiel Fellowship, Guo interned at Facebook before joining Snapchat as the company's first female designer. [9] At Snapchat, she helped develop Snap Maps. [10] She then moved to Quora where she met Alexandr Wang. [11] They co-founded Scale AI in 2016, but she was fired two years later in 2018. [1] The 5% stake she held in the company led her to become the youngest self-made female billionaire in May 2025, replacing Taylor Swift. [12]
In 2018, Guo launched an app called Apply to Date allowing users to create a dating resume. [13] In 2019, she launched Backend Capital, [14] originally called Backend Ventures, [15] a venture capital firm that primarily funds early-stage engineering startups. [16] The firm has funded startups such as the fintech company Ramp. [15] [16]
In 2022, Guo founded Passes, a social platform that allows creators to post content for paid subscribers. [17] It raised a $40 million Series A in 2024. [18]
Guo's Passes platform does not allow nudity or sexual content, and takes a ten percent margin from creator earnings. [19] In February 2025, Passes and Guo were sued by a creator who claimed Passes hosted and distributed nude photos of her in the month before her 18th birthday. [2] [20] [21]
As of 2024, Guo lives in Los Angeles. [22] [23] [24]
She was "living as a digital nomad" for a number of years before buying a $6.7 million apartment in 2020 in Miami where her parties caused conflict with neighbors. [25] [26]
In 2024, she purchased another $4.2 million home in West Hollywood, [27] and then purchased a $30 million home in Hollywood Hills in 2025. [28]