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AI training startup Mercor valued at $20 billion in latest funding round
Mercor has raised $750 million in a Series D funding round, valuing the AI training startup at $20 billion. The deal reflects strong investor interest in businesses that help develop AI, and gives Mercor more funding to train and test AI agents for professional tasks.
The San Francisco-based company connects technology firms with subject-matter experts who help train, test and improve AI models and agents. Investors included Benchmark, Felicis, Fundomo, Nvidia and funds managed by Apollo affiliates. Mercor was valued at about $10 billion after raising $350 million last October; AI-driven startups raised $102 billion, or 64 per cent of global venture capital, in the third quarter of 2026, according to Crunchbase.
In short
- Mercor raised $750 million at a $20 billion valuation.
- Nvidia and other investors joined the Series D round.
- The funding will support training and testing AI agents.
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