The story of Scale AI
San Francisco AI company that provides data, model evaluations and AI applications to AI labs, enterprises and governments. Founded in 2016 (Y Combinator Summer 2016 batch).
2016 –
Scale AI. San Francisco AI company that provides data, model evaluations and AI applications to AI labs, enterprises and governments. Founded in 2016 (Y Combinator Summer 2016 batch).
2016
Alexandr Wang founded Scale AI. Co-founder.
Co-founded with Lucy Guo.
Lucy Guo founded Scale AI. Co-founder.
Y Combinator invested in Scale AI. Summer 2016 batch.
Also took part in the 2018 Series B as an existing investor. Scale’s 2018 release describes the May 2017 Series A as led by Accel and Y Combinator.
2016–2018: Lucy Guo worked at Scale AI. Co-founder; led operations and product design, COO.
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).
Aug 2018
Index Ventures invested in Scale AI. Led $18 million Series B.
Round total, not Index’s share. Index partner Mike Volpi was to join Scale’s board.
5 Aug 2019
Adam D’Angelo invested in Scale AI. Individual investor in the Series C.
TechCrunch (2019) describes him as Quora’s CEO.
Founders Fund invested in Scale AI. Led $100 million Series C at a valuation of over $1 billion.
Round total, not Founders Fund’s share. Accel, Coatue, Index Ventures, Spark Capital and Thrive Capital took part, as did Kevin Systrom, Mike Krieger and Adam D’Angelo.
1 Dec 2020
Tiger Global Management invested in Scale AI. Led $155 million Series D at a post-money valuation above $3.5 billion.
Round total, not Tiger Global’s share.
13 Apr 2021
Dragoneer Investment Group invested in Scale AI. Co-led $325 million Series E.
Round total, not Dragoneer’s share. Co-led with Greenoaks Capital and Tiger Global.
Greenoaks Capital invested in Scale AI. Co-led $325 million Series E.
Round total, not Greenoaks’s share. Co-led with Dragoneer and Tiger Global.
Tiger Global Management invested in Scale AI. Co-led $325 million Series E at a $7.3 billion valuation.
Round total, not Tiger Global’s share. Co-led with Dragoneer and Greenoaks Capital.
Scale AI, stakeholders: Alexandr Wang, Lucy Guo and Meta Platforms.
Scale AI, headquartered in San Francisco.
Scale AI, investors: Greg Brockman.
24 sourced connections, each with its evidence. Open the explorer to follow any of them further, filter by lens, or move through time.
Drawn from the sourced links on Scale AI. Change a link and this story changes with it.