The Week’s 10 Biggest Funding Rounds: Agentic AI And Infrastructure Are Still On A Roll

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This is a weekly feature that runs down the week’s Top 10 announced funding rounds in the U.S. Check out last week’s biggest funding deal roundup here.

Startup financings related to artificial intelligence maintained strong momentum this week. Mirendil, a creator of agentic AI tailored for research and development, topped the list with a $1 billion Series A, followed closely by Mercor, which pulled in $750 million to link AI developers with human experts.

While the vast majority of the week’s biggest capital raises centered on AI, the mix also featured selections from the biotech, fintech, and enterprise software sectors.

1. Mirendil, $1B, AI for R&D: Mirendil, a developer of agentic AI technology for research and development, secured $1 billion in a Series A funding. Kleiner Perkins and Clearlake Capital led the round for the San Francisco-based startup.
2. Mercor, $750M, human-led AI training: Mercor, a platform that connects AI developers with human experts for model training and evaluation, raised $750 million in Series D funding. The round, backed by a long list of venture investors, set a $20 billion valuation for the San Francisco-based company, which was founded less than four years ago.
3. Torus, $500M, AI infrastructure: Salt Lake City-based Torus, a manufacturer of distributed power and compute infrastructure, announced a $500 million growth financing led by Magnetar Capital. It also introduced a product called Foundry, described as modular AI infrastructure for inference compute.
4. (tied) Path Robotics, $300M, AI for manufacturing: Path Robotics, a developer of physical AI technology for robotics and manufacturing, with initial expertise in welding, picked up $300 million in Series E financing. Georgian led the round, which set a $2.45 billion valuation for the Columbus, Ohio-based company.
5. (tied) LangChain, $300M, agentic AI: LangChain, developer of a platform to run, improve and govern AI agents, closed on $300 million in Series C funding at a $3 billion valuation. CapitalG led the round for the 4-year-old, San Francisco-based company.
6. Nominal, $240M, hardware engineering tools: Nominal, a developer of intelligence tools for hardware engineering, raised $240 million at a $3 billion valuation. Lightspeed Venture Partners and Insight Partners led the round for the Austin-based startup.
7. (tied) Imprint, $130M, fintech: Imprint, a payments, loyalty and customer intelligence platform for brands, landed $130 million in new funding at a $1.9 billion valuation. Khosla Ventures led the financing for the 6-year-old, New York-based company.
8. (tied) Mavria, $130M, AI infrastructure: Mavria, a startup focused on standardizing how AI infrastructure is developed, built and deployed, launched publicly and said it has raised $130 million in pre-seed and seed funding to date. Its latest round, led by Paradigm, sets a $1 billion valuation for the startup, whose founders formerly worked at the U.S. Department of Energy.
9. (tied) Delix Therapeutics, $100M, biotech: Delix Therapeutics, a startup that says it has “reverse-engineered and optimized psychedelics” to develop treatments for psychiatric and psychological disorders, closed on $100 million in Series C funding. Johnson & Johnson Innovation and SV Health Investors’ Dementia Discovery Fund led the financing for the Bedford, Massachusetts-based company.
10. (tied) Rox, $100M, sales automation: San Francisco-based Rox, developer of an AI revenue agent for enterprise sales, announced a $100 million Series B financing led by General Catalyst and March Capital.
11. (tied) Databento, $100M, financial market data: Databento, a finance data platform, secured $100 million in Series C funding at a $1.1 billion valuation. Fifth Down Capital led the round for the Salt Lake City-based company.

Methodology

We tracked the largest announced rounds in the Crunchbase database that were raised by U.S.-based companies for the period of Nov. 7-13, 2026. Although most announced rounds are in the database, there may be a small time lag, as some rounds are reported late in the week.