en.wikipedia.org/wiki/Lucy_Guo

Reliable sources show this sentence conflates Forbes' April 17, 2025 billionaire calculation with Meta's separate June 12, 2025 investment.

• Forbes Australia reported on April 17, 2025 that Guo became "the youngest self-made woman billionaire" because a tender offer was valuing Scale AI at $25 billion. Forbes wrote that the company was "wrapping up a tender offer" and that the deal "is slated to be completed by June 1" at a $25 billion valuation. So the article's claim that this happened when Meta bought Scale AI is wrong on both the trigger and the timing.
• Scale AI's own June 12, 2025 announcement says Meta made a "significant new investment" that valued Scale at over $29 billion and that "Meta will hold a minority" stake. The same announcement also states that "Scale remains an independent leader in AI", which directly contradicts the claim that Meta bought Scale AI.
• A Reuters report published by Yahoo Finance on June 12, 2025 further states that Meta took a 49% stake for $14.3 billion. That contradicts both the article's $25 billion figure and its implication that Meta acquired the whole company.

So the statement is inaccurate in at least three ways:

1. Meta did not buy Scale AI outright; it bought a minority stake.
2. The deal was not for $25 billion; Reuters reported $14.3 billion for a 49% stake, while Scale said the investment valued the company at over $29 billion.
3. Guo's billionaire milestone was reported by Forbes in April 2025, before the Meta deal, based on a $25 billion tender-offer valuation, not on a Meta acquisition in May 2025.