U.S. startup funding rounds skew to AI as Instinct leads with $1 billion

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US startup AI funding rounds

Highlights

Instinct leads U.S. startup funding with a $1 billion Series C round at a $10 billion valuation, backed by Sequoia Capital, Benchmark, and Coatue.
AI-related companies dominate top funding rounds, with EliseAI raising $350 million at a $4 billion valuation and Armadin securing $255.5 million at over $2.5 billion.
Major deals feature substantial debt financing, as GMI Cloud secures $445 million in debt alongside $223 million equity, and Homeward adds $330 million debt to its $120 million Series D.

Top rounds highlight investor focus on AI applications

As reported by Crunchbase News, Instinct tops this week’s ranking of the largest U.S. startup funding rounds with a $1 billion Series C backed by Sequoia Capital, Benchmark and Coatue. The financing gives the San Francisco-based developer of personal AI assistants a $10 billion valuation.

EliseAI follows with a $350 million round at a $4 billion valuation, with Andreessen Horowitz and Bessemer Venture Partners leading the financing for the New York-based company. The startup uses AI in the home rental market and is also expanding into healthcare.

Armadin ranks third after raising $255.5 million in Series B funding, led by Andreessen Horowitz and Accel, at a valuation of more than $2.5 billion. Kahua, which focuses on enterprise project management rather than AI, brings in $250 million in growth funding from Bain Capital Tech Opportunities and is the main non-AI outlier in the top tier of the list.

Other major rounds include GMI Cloud with $223 million in Series B funding plus $445 million in debt financing, General Intuition with $220 million, SiMa.ai with $150 million in Series C funding, Supabase with $150 million in new funding, and CScale with $145 million in Series C financing. Homeward rounds out the top 10 with $120 million in Series D equity funding and an additional $330 million in debt financing.

Valuations and debt deals show breadth of AI capital demand

The latest funding list suggests investors are backing AI across several layers of the market, from consumer assistants and rental software to cybersecurity, physical AI and data center infrastructure. Several of the rounds also come with multibillion-dollar valuations, including Instinct at $10 billion, General Intuition at $6.2 billion, EliseAI at $4 billion, Armadin at more than $2.5 billion and SiMa.ai at $1.45 billion.

Debt financing is also appearing alongside equity as companies scale capital-intensive operations. GMI Cloud adds $445 million in debt to its equity raise as it builds GPU cloud infrastructure for AI teams, while Homeward secures $330 million in debt financing on top of its equity round to support its real estate platform.

The concentration of large rounds among AI startups points to a market where investors continue to prioritize businesses tied to automation, model deployment and the infrastructure needed to train and run AI systems. Even within a broader startup funding environment, this week’s biggest U.S. deals show AI remains the dominant magnet for late-stage capital.

Our earlier article examined how soaring AI financing requirements are shaping investor and founder decisions, as large rounds and capital intensity don’t always translate into durable businesses. We highlighted Blackstone’s view on what defines lasting AI companies and pointed to big-ticket deals—such as funding for AI infrastructure firm Neysa and the Anthropic-backed implementation venture Ode—that show how equity and debt are increasingly used to scale compute and data-center capacity.

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