Agentic AI Startup Mirendil Raises $1B Series A to Top Weekly Funding

Mirendil, a San Francisco developer of agentic AI for research and development, raised $1 billion in Series A funding. Kleiner Perkins and Clearlake Capital led the round. The deal was the largest of the ten biggest announced U.S. startup financings for the week of Nov. 7-13, 2026, tracked by Crunchbase.

Mercor followed at $750 million. The Series D values the four-year-old San Francisco company at $20 billion. Mercor connects AI developers with human experts for model training and evaluation, and a long list of venture investors backed the round.

The vast majority of the week's largest rounds went to AI-related companies. Biotech, fintech and enterprise software filled the remaining slots.

What did the mid-tier rounds deliver?

Torus, based in Salt Lake City, raised $500 million in growth financing led by Magnetar Capital. The company builds distributed power and compute infrastructure. It also launched Foundry, a product it describes as modular AI infrastructure for inference compute.

Two companies tied at $300 million:

• Path Robotics, a Columbus, Ohio developer of physical AI for robotics and manufacturing with initial expertise in welding, closed a $300 million Series E led by Georgian at a $2.45 billion valuation.
• LangChain, a four-year-old San Francisco company whose platform runs, improves and governs AI agents, secured a $300 million Series C led by CapitalG at a $3 billion valuation.

Nominal raised $240 million at a $3 billion valuation. Lightspeed Venture Partners and Insight Partners led the round for the Austin startup, which builds intelligence tools for hardware engineering.

Which companies landed $100 million-plus?

Imprint and Mavria tied at $130 million. Imprint, a six-year-old New York payments, loyalty and customer intelligence platform for brands, raised $130 million at a $1.9 billion valuation with Khosla Ventures leading. Mavria launched publicly with $130 million in pre-seed and seed funding to date; its latest round, led by Paradigm, values the startup at $1 billion, and its founders previously worked at the U.S. Department of Energy. The company focuses on standardizing how AI infrastructure is developed, built and deployed.

Three companies closed at $100 million:

• Delix Therapeutics raised a $100 million Series C led by Johnson & Johnson Innovation and SV Health Investors' Dementia Discovery Fund. The Bedford, Massachusetts biotech says it has "reverse-engineered and optimized psychedelics" to develop treatments for psychiatric and psychological disorders.
• Rox, a San Francisco developer of an AI revenue agent for enterprise sales, announced a $100 million Series B led by General Catalyst and March Capital.
• Databento, a finance data platform also based in Salt Lake City, secured a $100 million Series C led by Fifth Down Capital at a $1.1 billion valuation.

How was the list compiled?

Crunchbase tracked the largest announced rounds raised by U.S.-based companies for the period of Nov. 7-13, 2026. Most announced rounds appear in the database, though some are reported late in the week and may lag.

The week's top ten rounds total roughly $3.55 billion. Agentic AI and AI infrastructure companies — Mirendil, Mercor, Torus, LangChain, Mavria and Path Robotics among them — account for more than three-quarters of that figure, a concentration that suggests investors will keep directing capital toward agent tooling and compute buildouts in the weeks ahead.