Lucy Guo Named Youngest Self-Made Female Billionaire

Forbes has officially named Lucy Guo, the 30-year-old cofounder of Scale AI, as the world's youngest self-made female billionaire, overtaking Taylor Swift. Guo's wealth, estimated at $1.25 billion, largely comes from her nearly 5% stake in Scale AI, a company now valued at $25 billion. Although Guo left Scale AI in 2018 after a disagreement with her cofounder, she retained her equity, which surged in value as the AI industry boomed. Since leaving, Guo has launched the creator platform Passes and the venture fund Backend Capital, further cementing her presence in tech. Swift, whose net worth is reportedly higher overall, now ranks second after holding the youngest self-made female billionaire title since 2023. The change highlights the growing impact of technology and AI startups in shaping the new generation of young female billionaires.