Mercor, the AI data company that supplies human experts to train and test AI models, said on 10 November that it “raised a $750 million Series D at a $20 billion valuation”, in a company release. NVIDIA is one of 13 investors the release names.
The valuation is double the $10 billion Mercor gave for its Series C on 27 October 2025, by our arithmetic, and the new round is about 2.1 times that round’s $350 million.
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The key insight: Mercor raised $750 million at a $20 billion valuation, with NVIDIA among 13 named investors. Its Series C in October 2025 valued it at $10 billion, so the valuation has doubled in about a year, by our arithmetic.
The release lists the investors as “Benchmark, Felicis, Fundomo, funds managed by affiliates of Apollo, G Squared, General Catalyst, Glade Brook Capital, NVIDIA, Salesforce, Sapphire Ventures, StepStone Group, XTX Ventures, and Zoom”. It does not name a lead investor.
Mercor says the money will “accelerate Mercor’s evaluation (evals) and post-training business”. It describes a network of “more than five million experts” working for frontier AI labs, big tech, AI startups and Fortune 500 companies.
Co-founder and co-CEO Brendan Foody said: “We spent the last two years building that infrastructure with the frontier labs. Now we’re bringing it to enterprises across the economy”. Foody also discussed the round on CNBC’s Squawk Box; no transcript of that interview was available to us, so we do not quote it.
Mercor valuation by round, from its October 2025 Series C post and November 2026 Series D release. The $2 billion Series B mark is our arithmetic.
What Was Posted on X
We raised our $750 million Series D at a $20 billion valuation from @benchmark, @generalcatalyst, @nvidia, @salesforce, and @zoom.
@mercor scaled from $1M to $3B in run-rate revenue in 27 months, the fastest in history to $3B.
For 2 years, we’ve organized human intelligence to build evals and training data for every frontier lab.
The labs are the leading indicator for AI startups, then the Fortune 500.
Our growth has accelerated over the past 6 months as enterprises start evaluating and training their own models. For many, owning their intelligence is existential.
Mercor CEO Brendan Foody posted at 15:52 UTC on 10 November that the company raised its $750 million Series D at a $20 billion valuation from Benchmark, General Catalyst, Nvidia, Salesforce and Zoom. He also wrote that Mercor scaled from $1 million to $3 billion in run-rate revenue in 27 months, which he called the fastest in history; the run-rate figures are his claim and are not independently verified. He said growth has accelerated over the past six months as enterprises start evaluating and training their own models.
MERCOR IS NOW WORTH $20 BILLION
The AI training-data startup raised $750 million in a Series D at a $20 billion valuation, according to Reuters.
How fast it has grown:
February 2025: $2 billion October 2025: $10 billion November 2026: $20 billion
Its founders were 21 when Mercor first hit a $2 billion valuation. Investors in the new round include Benchmark, General Catalyst, Nvidia, Salesforce and Zoom.
IPO Newsroom posted at 14:52 UTC on 10 November that Mercor raised $750 million in a Series D at a $20 billion valuation, citing Reuters. The post lists the valuation path as $2 billion in February 2025, $10 billion in October 2025 and $20 billion in November 2026. Those marks match this piece: $20 billion is double the $10 billion Series C mark and ten times the $2 billion Series B mark, by our arithmetic.
Why Nvidia Is on the Cap Table
Nvidia sells the chips that models train on. Mercor, by its own description, sells the expert work that labs and companies use to “evaluate and post-train models on real professional work”. With this round, Nvidia is also an investor in that data and expert-labour layer.
Mercor’s pitch is that the buyer base is widening. Sapphire Ventures’ Jai Das said in the release: “For the last few years, frontier labs have been the primary buyers of expert-driven training data, which is about to change”. Co-CEO Adarsh Hiremath said Mercor builds “custom benchmarks with each enterprise to measure models against its own standards”.
Mercor’s Series C post said “This round values Mercor at $10 billion, 5x our Series B valuation”. That puts the Series B mark at $2 billion, by our arithmetic, so the valuation has risen tenfold across two rounds.
The Structural Read
As we read the release, the sales pitch is shifting from frontier labs to enterprises: Mercor says it will build custom benchmarks with each company and use them as the starting point for post-training.
As we read the investor list, Nvidia now has exposure to the human-expertise input that labs and enterprises use to evaluate and post-train models, alongside its chip business.
Adarsh Hiremath, co-founder and co-CEO, Mercor release, 10 November 2026
“A model can score well on a public benchmark and still fail on the systems, policies, and edge cases that define how a specific business runs”
Three Implications
FOR MERCOR The release says the Series D will accelerate its investment in research, evaluation and post-training infrastructure, including environments where agents learn professional workflows.
FOR NVIDIA NVIDIA appears in the Series D investor list and in the release’s list of Mercor backers; the release gives no size for its investment.
FOR INVESTORS The $20 billion mark is double the $10 billion Series C mark and ten times the $2 billion Series B mark implied by Mercor’s own 5x figure, by our arithmetic.
The framework describes “The Container Moat” as one “built by closed data loops inside a customer’s environment”.
As we read it, Mercor’s enterprise pitch, benchmarks and post-training on each company’s own work, is an attempt to sell into that position. The framework predates this round and does not discuss Mercor or Nvidia.
What Is Not Established
The release gives no revenue figure, no size for Nvidia’s cheque and no split between new and secondary shares. It does not say whether $20 billion is a pre-money or post-money figure.
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Mercor raised $750 million at a $20 billion valuation, with Nvidia among 13 named investors. That valuation is double its October 2025 Series C mark, by our arithmetic.
A note on sourcing. Figures and quotations are from Mercor’s Series D release of 10 November 2026 (Business Wire) and its Series C post of 27 October 2025. Ratios marked as such are our arithmetic. Mercor and Nvidia were not contacted for this piece.
Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur (for example, How to Digitize a Family Business in Europe) and HackerNoon. Find him on LinkedIn and Substack. See how we source.
