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

AI training startup Mercor has secured $750 million in Series D funding, doubling its valuation to $20 billion.

Artificial intelligence training startup Mercor announced it has raised $750 million in a Series D funding round, according to Reuters. The financing values the company at $20 billion, doubling its $10 billion valuation set in October 2025 as it moves to bring AI agent evaluation tools to enterprise customers.[3][4][5]

The round drew prominent venture and corporate backers, including Benchmark, General Catalyst, and Nvidia. Additional participants include Felicis, Fundomo, G Squared, Glade Brook Capital Partners, Salesforce, Sapphire Ventures, StepStone Group, XTX Ventures, Zoom, and funds managed by affiliates of Apollo Global Management.[1][4][5]

Key facts

  • Mercor raised $750 million in a Series D funding round.
  • The funding round values Mercor at $20 billion, up from $10 billion in October 2025.
  • Investors include Benchmark, General Catalyst, and Nvidia.
  • Additional participants include Felicis, Fundomo, G Squared, Glade Brook Capital Partners, Salesforce, Sapphire Ventures, StepStone Group, XTX Ventures, Zoom, and funds managed by affiliates of Apollo Global Management.

Sources · 5 sources

  1. TF

    Tech Funding News@TFNBreakingNewsPost on X ·

    💰@mercor has raised $750 million in Series D funding at a $20 billion valuation. https://t.co/DGj1Ye8r6E The round includes participation from @benchmark, @felicis, Fundomo, funds managed by affiliates of Apollo Global Management, Inc., G Squared, General Catalyst, Glade Brook Capital Partners LLC, NVIDIA, Salesforce, Sapphire Ventures, StepStone Group, XTX Ventures and Zoom. #ai #ustech #innovation #investment #vcfunding #startups #technology

    Open source
  2. TS

    The SaaS News@TheSaaSNewsPost on X ·

    Mercor Raises $750M Series D #AI #AITraining #AIAgents #AIResearch #AIData #Traininginfrastructure #EnterpriseAI #SeriesD #Funding #Mercor https://t.co/CYJf8cHFWt

    Open source
  3. SI

    SiliconANGLE@SiliconANGLEPost on X ·

    Mercor raises $750M at $20B valuation to take AI agent evaluation to enterprises https://t.co/D3s2DNnIjP

    Open source
  4. TE

    Techmeme@TechmemePost on X ·

    AI training startup Mercor raised a $750M Series D from Benchmark, General Catalyst, Nvidia, and others at a $20B valuation, up from $10B in October 2025 (Reuters) (Visit Techmeme dot com for the link and full context!)

    Open source
  5. TE

    TechmemeArticle ·

    AI training startup Mercor raised a $750M Series D from Benchmark, General Catalyst, Nvidia, and others at a $20B valuation, up from $10B in October 2025 (Reuters) Reuters : AI training startup Mercor raised a $750M Series D from Benchmark, General Catalyst, Nvidia, and others at a $20B valuation, up from $10B in October 2025 — Mercor said on Tuesday it had raised $750 million in a funding round that valued the AI training startup at $20 billion.

    Open source