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Person

Lucy Guo

Co-founder of Scale AI, which she left in 2018.

4 links, 2 backed by primary records

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Over time
  1. worked at Scale AI (co-founder; led operations and product design, COO) 2016–2018
Lucy Guo holds

Connections 4

founded

worked at

  • Quora 2015 product designer Scholarship & press 57

    Joined in 2015, where she met Alexandr Wang; Forbes says she left for a brief stint at Snapchat before co-founding Scale in 2016. No source gives exact dates.

  • Scale AI 2016–2018 co-founder; led operations and product design, COO Primary record 348

    COO is her title on Scale’s team page archived 2017-03-23; she left in 2018 (no month given). Her own accounts: "disagreements around products and sales" (CNBC, 2025) and "differences in product vision and road map" (Forbes, 2023).

owns a stake in

  • Scale AI 5.99%, as of 11 Jul 2023 Scholarship & press 12

    Figure from a screenshot Fortune reviewed in 2023 and repeated in December 2024.

Timeline 3 dates
  1. 2015 Lucy Guo worked at Quora
  2. 2016 Lucy Guo founded Scale AI
  3. 2016–2018 Lucy Guo worked at Scale AI
Proof 8 sources
  1. How I made my first million: Scale AI co-founder Lucy Guo, Fortune, 11 Jul 2023. Scholarship & press
    Fortune reviewed a screenshot showing Guo’s 5.99% ownership in Scale AI, which she said comprised the lion’s share of her net worth.
  2. Multimillionaire Lucy Guo’s only regret: Investing in ‘every startup that’s gone to zero’, Fortune, 17 Dec 2024. Scholarship & press
    Guo departed Scale in 2018, but retains 5.99% ownership, which amounts to nearly 47 million Class A shares.
  3. Inside billionaire Lucy Guo’s intense daily routine: 5:30 a.m. wake-ups, double gym sessions, and no lunch breaks, CNBC, 23 Aug 2025. Scholarship & press
    Guo co-founded Scale AI, an AI data labeling company, alongside Alexander Wang in 2016.
    Guo, who headed up the operations and product design teams at the Silicon Valley startup, left the company in 2018. "We had disagreements around products and sales," Guo explained.
  4. Scale: API For Human Intelligence, Scale AI. Primary record
    Lucy Guo COO and Co-founder
  5. The inside story of Scale AI cofounder Alexandr Wang’s rise and the $14 billion Meta deal, Fortune, 22 Jun 2025. Scholarship & press
    Lucy Guo cofounded Scale AI with Alexandr Wang, but left in 2018.
    teaming up with Lucy Guo, a product designer at Quora
  6. Scale, whose army of humans annotate raw data to train self-driving and other AI systems, nabs $18M, TechCrunch, 7 Aug 2018. Scholarship & press
    who co-founded Scale with Lucy Guo
  7. This AI founder has unseated Taylor Swift as the world’s youngest self-made woman billionaire, Forbes Australia, 17 Apr 2025. Scholarship & press
    In 2015, Guo got a job as a product designer at question-and-answer firm Quora, where she met Wang. She left Quora and worked briefly at Snapchat doing product design before she and Wang decided to cofound Scale AI in 2016.
  8. How Alexandr Wang Turned An Army Of Clickworkers Into A $7.3 Billion AI Unicorn, Forbes, 11 Apr 2023. Scholarship & press
    Guo subsequently left the company “due to differences in product vision and road map,” she says.
Page history 1 change
  1. Add Alexandr Wang and Scale AIAlibek4938021

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