
The Series D included Nvidia and funds managed by Apollo affiliates, with proceeds aimed at training and testing AI agents.
Mercor raised $750 million in a Series D funding round that valued the AI training company at $20 billion, the company said Tuesday.
The round included Benchmark, Felicis, Fundomo, Nvidia and funds managed by affiliates of Apollo, among other investors.
Mercor began as an AI-powered hiring platform. It now connects technology companies with subject-matter experts whose knowledge is used to train, test and improve AI models and agents. The San Francisco-based company said it will put the new funding toward training and testing AI agents on professional tasks.
Mercor was valued at about $10 billion after raising $350 million in October last year. Crunchbase data show AI-focused startups raised $102 billion in the third quarter of 2026, representing 64% of global venture capital for the period.
This article was produced with the help of AI technology. Based on reporting by the outlets listed above.