It was another active week for AI-related startup funding, with large rounds across infrastructure, biotech, space tech and physical AI. The largest financings went to Tenstorrent, a developer of AI processors and systems, and AI lab Flapping Airplanes.
1. Tenstorrent, $1.5B, AI infrastructure: Santa Clara, California-based Tenstorrent secured $1.5 billion in Series E funding led by Trace Capital and Innovation X, setting a $6.2 billion valuation for the 10-year-old company.
2. Flapping Airplanes, $1B, foundational AI: The San Francisco startup closed $1 billion in Series A funding led by Lux Capital and Index Ventures, less than 10 months after raising a $180 million seed round.
3. ASI, $325M, AI for critical infrastructure: Boston-based ASI picked up $325 million in Series C financing led by Spark Capital at a $3 billion valuation.
4. Xona, $250M, space tech: Burlingame, California-based Xona raised $250 million in Series D funding led by Future Ventures at a $2.4 billion valuation.
5. Pathos AI, $237M, biotech: New York-headquartered Pathos AI completed a $237 million Series E financing at a $3 billion valuation, led by Bristol-Myers Squibb.
6. Warp Sciences, $215M, AI, robotics and life sciences: Warp Sciences raised a $215M Series A round led by Lightspeed Venture Partners.
7. (tied) Whop, $200M, online business marketplace: New York-based Whop secured $200 million in Series D funding led by Sequoia Capital and Shopify Ventures at a $5.1 billion valuation.
7. (tied) Star Therapeutics, $200M, biotech: South San Francisco-based Star Therapeutics raised $200 million led by Orbi Med and Janus Henderson Investors.
7. (tied) Warhound, $200M, military dogs: Warhound launched from stealth with $200 million in seed funding, co-founded by Palmer Luckey, planning to equip dogs with Anduril technology.
10. Arda Industries, $160M, AI manufacturing software: San Francisco-based Arda Industries closed $160 million in Series A funding at a $1.5 billion valuation, co-led by Altimeter Capital, Accel and Khosla Ventures.
We tracked the largest announced rounds in the Crunchbase database raised by U.S.-based companies for the period of Oct. 17-23, 2026.
Source: Crunchbase News · Summarized by HeadlinesBriefing