Scale AI
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Investors
Founders
About
Scale AI is an AI data infrastructure company that provides data labeling, evaluation, and fine-tuning services for machine learning models 1. The company was co-founded in 2016 by Alexandr Wang and Lucy Guo through Y Combinator 2. In June 2025, Meta Platforms purchased a 49% non-voting stake in Scale AI for $14.3 billion, more than doubling its valuation to $29 billion; as part of the deal, founder Alexandr Wang departed to take a position at Meta and was replaced as CEO by Jason Droege 3. Scale AI has raised a total of approximately $15.9 billion across nine funding rounds 4.
Funding History
| Round | Date | Amount | Lead Investor(s) | Key Co-Investors | Valuation |
|---|---|---|---|---|---|
| Seed | 2016-06 | ~$120K | Y Combinator | — | — |
| Series A | 2017-07-16 | $4.5M | Accel | Y Combinator, Greg Brockman, Nat Friedman, Guillermo Rauch, Ilya Sukhar | — |
| Series B | 2018-08-07 | $18M | Index Ventures | Accel, Y Combinator, Drew Houston, Justin Kan | — |
| Series C | 2019-08-05 | $100M | Founders Fund | Accel, Coatue, Index Ventures, Spark Capital, Thrive Capital, Kevin Systrom, Mike Krieger, Adam d’Angelo | $1B+ |
| Series D | 2020-12-01 | $155M | Tiger Global | — | $3.5B |
| Series E | 2021-04-13 | $325M | Dragoneer, Greenoaks, Tiger Global | Wellington Management | $7.3B |
| Series F | 2024-05-21 | $1B | Accel | Y Combinator, Nat Friedman, Index Ventures, Founders Fund, Coatue, Thrive Capital, Spark Capital, Tiger Global, Greenoaks, Wellington, Nvidia, Meta, Amazon, Cisco, DFJ Growth, Intel Capital, ServiceNow Ventures, AMD Ventures, Elad Gil | $13.8B |
| Series G | 2025-06-12 | $14.3B | Meta | — | $29B |
Seed round is the standard Y Combinator Summer 2016 investment (~$120K); Scale was part of YC’s S16 batch 210. The Series A was announced by Scale on July 16, 2017, though the round itself closed earlier in May 2017 56. The Meta deal announced June 12, 2025 is a strategic investment for a 49% non-voting stake at a ~$29B valuation; proceeds are being used to distribute liquidity to existing shareholders and to fuel growth, with founder Alexandr Wang departing to lead Meta’s AI efforts and remaining a Scale board director while Jason Droege serves as CEO 31112.
What Investors Say
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What Founders Say
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Sources
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Scale AI website, accessed March 2026. https://scale.com↩
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Wikipedia, “Scale AI,” accessed March 2026. https://en.wikipedia.org/wiki/Scale_AI↩↩↩
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CNBC, “Scale AI’s Alexandr Wang confirms departure for Meta as part of $14.3 billion deal,” June 2025. https://www.cnbc.com/2025/06/12/scale-ai-founder-wang-announces-exit-for-meta-part-of-14-billion-deal.html↩↩↩
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Tracxn, “Scale AI - 2026 Funding Rounds & List of Investors,” accessed March 2026. https://tracxn.com/d/companies/scaleai/__iQC-P6zm6-YIchaMdt_UtWRoQNAzQYgkyxD99e8U-cI/funding-and-investors↩↩
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Scale AI Blog, “Announcing Our Series A With Accel,” May 2017. https://scale.com/blog/announcing-our-series-a-with-accel↩↩
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GlobeNewsWire, “Scale Announces $18 Million in Series B Funding Led by Index Ventures,” August 2018. https://www.globenewswire.com/news-release/2018/08/07/1548173/0/en/Scale-Announces-18-Million-in-Series-B-Funding-Led-by-Index-Ventures-with-Accel-and-YC-Joining-the-Round.html↩↩
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TechCrunch, “Scale AI and its 22-year-old CEO lock down $100 million to label Silicon Valley’s data,” August 2019. https://techcrunch.com/2019/08/05/scale-ai-and-its-22-year-old-ceo-lock-down-100-million-to-help-label-silicon-valleys-data/↩
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BusinessWire, “Scale AI Raises $1 Billion Series F to Push The Frontier of AI Data,” May 2024. https://www.businesswire.com/news/home/20240521674964/en/Scale-AI-Raises-$1-Billion-Series-F-to-Push-The-Frontier-of-AI-Data↩
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Crunchbase News, “Scale AI Raises $1B In Accel-Led Round; Hits $13.8B Valuation,” May 2024. https://news.crunchbase.com/ai/scale-holistic-raise-big-accel-nvda-amzn/↩
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Y Combinator, “Alexandr Wang: Building Scale AI, Transforming Work with Agents & Competing With China,” accessed April 2026. https://www.ycombinator.com/library/MV-alexandr-wang-building-scale-ai-transforming-work-with-agents-competing-with-china↩↩
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Scale AI Blog, “Founder, Alexandr Wang, Joins Meta to Work on AI Efforts,” June 12, 2025. https://scale.com/blog/scale-ai-announces-next-phase-of-company-evolution↩↩
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TechCrunch, “Scale AI confirms ‘significant’ investment from Meta, says CEO Alexandr Wang is leaving,” June 13, 2025. https://techcrunch.com/2025/06/13/scale-ai-confirms-significant-investment-from-meta-says-ceo-alexandr-wang-is-leaving/↩↩