(NEXSTAR) – Lucy Guo has amassed more wealth than Rihanna, Madonna and Beyonce, according to a new Forbes ranking, but you're far less likely to have heard of her.

Guo has a net worth of $1.3 billion thanks to her business ventures in artificial intelligence. She cofounded the startup Scale AI when she was just 21, Forbes writes. Even though she left the company, she maintained her 5% stake in the company – and that's about to pay off big time.

Scale AI is now valued at........

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