The two largest checks of the funding week went to model builders: a closed $20 billion Series E at xAI and a signed term sheet that would hand Anthropic $10 billion at a $350 billion valuation. Below those, security and enterprise AI companies raised at valuations that tripled or quintupled inside two years, and one of the biggest venture firms restocked with $15 billion to keep the cycle fed.
xAI said it raised the $20 billion after setting out for $15 billion, with Valor Equity Partners, StepStone Group, Fidelity Management & Research Company, Qatar Investment Authority, MGX and Baron Capital Group in the round, joined by Nvidia and Cisco Investments as strategic investors. The company says the money will accelerate its infrastructure buildout, product deployment and research. Both Nvidia and Cisco also work with xAI as vendors, which puts two suppliers in the position of financing a customer whose spending flows back to them. Reporting in November placed the financing near a $230 billion valuation; the company itself stated no figure.
An even larger price attaches to Anthropic. The Claude developer has signed a term sheet for a $10 billion round at a $350 billion valuation, with Coatue and Singapore's sovereign wealth fund GIC reported to be leading. A term sheet is not a closed round, so the number could still move. If it holds, it would put Anthropic within range of OpenAI, whose valuation has reached $500 billion, and it follows November commitments from Microsoft and Nvidia of up to $5 billion and up to $10 billion respectively.
Data security drew the week's largest growth-stage round. Cyera raised a $400 million Series F at a $9 billion valuation, led by funds managed by Blackstone, triple its price of roughly six months earlier, and the company reports revenue growth of 3.4 times. "AI is reshaping how organizations operate, and our mission is to ensure transformation happens securely," said co-founder and chief executive Yotam Segev.
Further down the stack, Intel spinout Articul8 has secured more than half of a planned $70 million Series B at a $500 million pre-money valuation, roughly five times its Series A price, with the first installment led by Spain's Adara Ventures. Chief executive Arun K. Subramaniyan told TechCrunch the company expects to end the year with just over $57 million in annual recurring revenue from customers in regulated industries. "We are not cash-strapped," he said.
Supply of capital shows no sign of thinning. Andreessen Horowitz disclosed $15 billion in new funds, including a $6.75 billion growth vehicle and $1.7 billion each for apps and infrastructure, aimed at technology that cofounder Ben Horowitz describes as "dynamic, innovative, and intensely competitive with China." The open question is whether enterprises can absorb what this much capital builds as quickly as investors expect; the week's buyers of AI security and audit-ready systems suggest where absorption is furthest along.
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