AI infrastructure dominated the latest U.S. venture‑funding week, with Denver‑based Crusoe closing a $3 billion Series F and New York‑based Fluidstack raising $1.5 billion. The two deals together account for roughly $4.5 billion of the $5.8 billion raised by the ten companies tracked by Crunchbase for the period Aug. 29‑Sept. 4.
Crusoe’s round was co‑led by Atreides Management and Valor Equity Partners, with Mubadala Capital also participating. The funding brings the company’s total capital to about $7.2 billion and values it at $30 billion, roughly three times its valuation a year earlier. Originally founded to power cryptocurrency mining with stranded natural gas, Crusoe now operates as a large‑scale AI cloud and data‑center provider serving OpenAI, Microsoft and Meta.
Fluidstack’s $1.5 billion private‑equity round was led by Jane Street Capital. The financing lifts the firm’s cumulative funding to just over $2.6 billion and places its valuation at $18 billion. Fluidstack supplies GPU‑rich data‑center capacity for intensive AI workloads, positioning itself among a growing cohort of providers scaling compute resources for generative‑AI models.
Other notable rounds include:
* Gimlet Labs (San Francisco) secured $300 million in a Series B led by Andreessen Horowitz, with participation from Sapphire Ventures, Menlo Ventures, Arm Holdings and Microsoft’s M12. The AI inference platform, which distributes workloads across diverse chip architectures, raised its total to $392 million and was valued at $3 billion.
* Upwind Security (San Francisco) also raised $300 million, co‑led by Bessemer Venture Partners and TCV, with investors such as Salesforce Ventures, Greylock and Craft Ventures. The cloud‑runtime security firm, which blends AI with threat detection, now has $730 million in funding and a $3.8 billion valuation.
* HiBob (New York) obtained $166 million from Salesforce and Farallon Capital Management, bringing its total to $740 million and valuing the HR‑software platform at $3.2 billion.
* Lyte AI (Sunnyvale) raised $165 million in a Series C led by Maverick Silicon, joined by Fidelity, Atreides Management, Key 1 Capital and Ora Global. The robotics‑focused startup, founded by former Apple engineers, has accumulated $272 million in capital and is valued at $1.6 billion.
* TabaPay (Mountain View) secured $155 million in growth financing from FTV Capital while pursuing the acquisition of Transact Bank, a federally chartered institution that would deepen its payments‑infrastructure capabilities.
* Thyme Care (Nashville) attracted $125 million in a Series E led by Morgan Health, the JPMorgan Chase health‑care investment arm, with CVS Health Ventures, Humana and Andreessen Horowitz also participating. The oncology‑care coordination platform now holds $399 million in total funding and a $2 billion valuation.
* HiddenLayer (Austin) closed a $100 million Series B led by Delta‑v Capital, with Ten Eleven Ventures, M12, Booz Allen Ventures and Morgan Stanley among the backers. The firm builds security tools to protect AI models and workflows, bringing its cumulative capital to $156.2 million.
* Food‑brand David (New York) raised $250 million in a Series B co‑led by Greenoaks and Valor Equity Partners, with participation from Iconiq Capital and co‑founder Peter Rahal. The high‑protein snack maker has raised $335 million overall and is valued at $2.25 billion.
These rounds underscore continued investor appetite for AI‑related infrastructure and a broad set of technology‑enabled businesses as compute demand and sector‑specific applications expand.
The list reflects Crunchbase’s methodology of tracking the largest announced U.S. rounds each week, acknowledging a possible reporting lag for late‑filed deals.
