Mercor raises a US$750 million Series D at a US$20 billion valuation

Mercor has raised a US$750 million Series D that values the company at US$20 billion. Co-founder and CEO Brendan Foody set out the round in a 10 November post, “Organizing human intelligence for the entire economy.” The company’s X account announced the same figures that day.

“Today, we’re announcing our $750 million Series D valuing Mercor at $20 billion.”

— Brendan Foody, in Organizing human intelligence for the entire economy

Foody said the round included an employee tender, along with participation from 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. The company says the latest funding will accelerate its investment in evaluation and post-training infrastructure, and in building more environments where agents can learn complex workflows.

Mercor trains and evaluates AI systems with human expertise, a business it first built for frontier labs and is now taking to other companies. Foody wrote that those capabilities are being adopted by big tech, developers of open models, application-layer companies and the Fortune 500. He also wrote that Mercor has more than five million experts in its network “getting paid to train frontier AI models based on their unique knowledge.”

The post says the firm acquired Deeptune earlier this year, a team that had spent two years recreating hundreds of enterprise applications where agents can practise professional workflows. It also says Mercor has opened offices in New York and London this year, after starting out in San Francisco.

In October 2025, CNBC reported that Mercor had announced a US$350 million Series C that valued the company at US$10 billion, in a round led by Felicis. Mercor still lists that CNBC story in its newsroom.

Foody also wrote that Mercor already spends three times as much on inference as on employee salaries, and argued that if that ratio held as AI spread through the rest of the economy, “it points to something closer to double-digit GDP growth over the next five years.” That is the company’s own projection, not an independent forecast.

Mercor has raised a $750 million Series D at a $20 billion valuation to scale our mission of organizing human intelligence for the entire economy.

Every company now needs what we built for the frontier AI labs. Over the next five years, more money will be spent applying AI to pic.x.com/T3kcxCdHj2

— Mercor (@mercor) November 10, 2026