AI Infrastructure Dominates $10B+ Weekly Funding Surge as Crusoe and Fluidstack Lead the Pack
Two multibillion-dollar artificial intelligence infrastructure deals topped this week's venture funding announcements, with Crusoe's $3 billion raise and Fluidstack's $1.5 billion round significantly outpacing other sectors.
Artificial intelligence infrastructure companies captured the lion's share of major venture capital this week, with the sector accounting for the two largest announced funding rounds in the United States. Beyond these headline deals, a broader range of industries—from cybersecurity to robotics to healthcare—also secured substantial capital commitments, reflecting continued investor appetite for growth-stage startups.
The Week's Top 10 Funding Rounds
1. Crusoe, $3B, AI infrastructure
Denver-based Crusoe completed a $3 billion Series F round with co-leads Atreides Management and Valor Equity Partners, alongside Mubadala Capital. The company, which initially focused on using stranded natural gas for cryptocurrency mining operations, has evolved into a significant provider of cloud and data center services for artificial intelligence workloads. Its customer base includes OpenAI, Microsoft and Meta. Crusoe's cumulative funding now stands at nearly $7.2 billion, and the latest round values the company at $30 billion—a threefold increase from its valuation approximately one year prior.
2. Fluidstack, $1.5B, AI infrastructure
Fluidstack, headquartered in New York, secured $1.5 billion through a private equity financing round led by Jane Street Capital. The company supplies large-scale GPU and data center resources for computationally demanding artificial intelligence applications, positioning itself within a growing cohort of firms investing substantially to address accelerating demand for computational capacity. This round brings Fluidstack's total funding to just over $2.6 billion and establishes its valuation at $18 billion.
3. (tied) Gimlet Labs, $300M, AI infrastructure
San Francisco-based Gimlet Labs raised $300 million in Series B financing led by Andreessen Horowitz, with participation from Sapphire Ventures, Menlo Ventures, Arm Holdings and M12—Microsoft's corporate venture fund. Gimlet is constructing an inference cloud platform that allocates computational tasks across heterogeneous chip architectures, a strategy intended to accelerate and optimize the resource-intensive task of executing artificial intelligence models. The company has accumulated $392 million in total funding and achieved a $3 billion valuation in this latest round.
3. (tied) Upwind Security, $300M, cybersecurity
San Francisco-based Upwind Security raised $300 million in new capital through a round co-led by Bessemer Venture Partners and TCV, with additional backing from Salesforce Ventures 1, Greylock, Craft Ventures and Cyberstarts. Upwind's technology leverages real-time cloud runtime information to detect security threats and system vulnerabilities, combining expertise in cloud security with artificial intelligence capabilities. To date, the company has raised $730 million and was valued at $3.8 billion in this transaction.
5. David, $250M, food and nutrition
New York-based David, a manufacturer of high-protein food products, completed a $250 million Series B round co-led by Greenoaks and Valor Equity Partners, with Iconiq Capital, Imaginary Ventures and co-founder Peter Rahal also investing. Recognized primarily for its high-protein, low-calorie snack bars, David has broadened its portfolio to encompass additional protein-centric offerings as consumer interest in products emphasizing protein and metabolic wellness continues to expand. The company's cumulative funding reaches $335 million, and the latest round values it at $2.25 billion.
6. HiBob, $166M, HR software
New York-based HiBob secured $166 million in a financing round led by Salesforce, with Farallon Capital Management also participating. HiBob's Bob platform integrates human resources, payroll administration, benefits management and employee oversight capabilities. The company is increasingly leveraging its workforce data assets as a foundation for enterprise-level artificial intelligence solutions. This round brings HiBob's total funding to $740 million and establishes its valuation at $3.2 billion.
7. Lyte AI, $165M, robotics and physical AI
Sunnyvale, California-based Lyte AI completed a $165 million Series C round led by Maverick Silicon, with support from Fidelity Management And Research Company, Atreides Management, Key 1 Capital and Ora Global. Established by former Apple engineers, Lyte develops proprietary silicon, sensing systems and artificial intelligence algorithms that enable robotic systems to perceive and interpret their physical environments—core technologies within the rapidly expanding physical artificial intelligence sector. Lyte's total funding now reaches $272 million, and the Series C values the company at $1.6 billion.
8. TabaPay, $155M, fintech and payments
Mountain View, California-based TabaPay obtained $155 million in growth-stage financing led by FTV Capital. TabaPay operates as a money-movement platform enabling banks and fintech firms to rapidly execute fund disbursements, collections and transfers. The company announced this financing concurrent with its pursuit of acquiring Transact Bank, a federally chartered institution, a strategic move that could expand its position within the payments infrastructure landscape. TabaPay's previous Series A round, announced in 2022, had an undisclosed funding amount.
9. Thyme Care, $125M, health care and oncology
Nashville, Tennessee-based Thyme Care raised $125 million in Series E financing led by Morgan Health, JPMorgan Chase's healthcare investment division. Additional investors included CVS Health Ventures, Humana and Andreessen Horowitz. Thyme Care partners with health plans, employers and healthcare providers to coordinate cancer treatment delivery and oversee oncology care management, reflecting a broader industry movement toward value-based specialty care models. The company has accumulated $399 million in total funding and achieved a $2 billion valuation in this round.
10. HiddenLayer, $100M, AI cybersecurity
Austin-based HiddenLayer completed a $100 million Series B round led by Delta-v Capital, with participation from Ten Eleven Ventures, M12, Booz Allen Ventures and Morgan Stanley. HiddenLayer develops security solutions specifically engineered to defend artificial intelligence models, agents and workflows against attacks and exploits—an increasingly critical category as enterprises deploy artificial intelligence systems into production environments. HiddenLayer's cumulative funding stands at $156.2 million.
Methodology
The data reflects the largest announced funding rounds in the Crunchbase database for U.S.-based companies during the period of August 29 through September 4, 2026. While most announced rounds appear in the database, a minor time lag may occur as certain rounds are disclosed later in the week.
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