The artificial intelligence sector topped the list of the 10 largest announced funding rounds for U.S.-based startups between August 22 and 28, 2026, but the total value of the rounds trended lower compared with recent weeks. Instinct, which is developing an AI assistant currently in beta testing, raised the largest round: $250 million in a Series B, according to a report by The Wall Street Journal citing its founder, Noah Shinn. Index Ventures and Benchmark led the list of investors, while the San Francisco-based company reached a valuation of $2.5 billion.
The list is based on announced rounds for U.S. companies recorded in the Crunchbase database during the tracking week, with the possibility of a limited time lag in the recording of some rounds. It therefore provides a weekly snapshot of funding trends, not a definitive ranking of all investments closed during that period.
Leading AI Funding Rounds
Owner ranked second with a new $240 million funding round. The company develops AI tools for local businesses to automate website creation, online and phone orders, mobile applications, and customer support. Goldman Sachs Growth Equity led the financing, which raised the valuation of the eight-year-old San Francisco-based company to $2.3 billion.
Generalist AI raised $200 million in additional funding to develop a foundational AI model capable of working with multiple types of robots. The round represents an extension of a $400 million Series B announced in June, which 8VC was said to have led. At the same amount, Gatik closed a Series D round to finance its autonomous trucking operations, led by Qatar Investment Authority and Koch Disruptive Technologies.
Funding Extends to Identity, Energy, and Transportation
Socure, which specializes in identity verification, risk management, and compliance tools, raised $156 million in growth financing led by Summit Partners, reaching a valuation of $5.2 billion. The company also announced the acquisition of Fravity, an agent-based platform for fraud investigation and compliance operations.
Emerald AI raised $150 million in a Series A led by Energize Capital and DCVC. The company is developing a software platform that balances AI computing loads with available energy resources, and the financing set its valuation at $1.05 billion.
Regent Craft, which develops high-speed winged maritime vehicles, raised $120 million in Series B equity financing led by Mare Liberum and AE Industrial Partners, in addition to $120 million in debt financing from Erebor Bank. AusperBio, a San Francisco-based biotech startup, also raised $120 million in a Series C to support clinical trials for its lead treatment for chronic hepatitis B and other diseases.
Smaller Rounds Outside AI
Stability AI announced a $76 million Series B round backed by financial and strategic investors to develop AI products aimed at professional creators in music, gaming, and entertainment. Blank Street, the Brooklyn-based coffee and matcha beverage chain, raised $75 million from investors including General Atlantic to fund its expansion on the West Coast, in addition to $30 million in secondary-market transactions.
Why Does This Funding Matter?
The list shows that capital remains heavily concentrated in AI applications, but is distributed across different use cases: user assistants, tools for local businesses, robotics models, products for creators, and energy management. At the same time, the rounds involving Gatik, Regent Craft, and AusperBio show that large-scale funding is not limited to software. However, the source does not provide sufficient data to assess revenue, product stages, or investment terms, so commercial success cannot be inferred from the size of the round or the valuation alone.