Top 10 AI Startups Raising $50 Million+ in Q3 of 2025

AI startups secured approximately 62.7% of all U.S. venture capital funding in Q3 according to PitchBook data. Overall, more than $192 billion has flowed into AI startups through 2025, marking this the first year AI has captured the majority share of total VC investment worldwide.

The third quarter alone stood out for its mega funding activity, with Anthropic’s record $13 billion Series F and xAI’s multibillion-dollar capital raise. Investments have flowed not just into technology hubs like Silicon Valley but also emerging innovation centers worldwide.

Backed by renowned VC firms like Sequoia Capital, Andreessen Horowitz, Benchmark, as well as tech giants including Google, Nvidia, Bill Gates’ investment arms, and Jeff Bezos’ Expeditions, this cohort represents the technical skill required to move AI from research to critical infrastructure in global markets.

1. Decart Raises $100M

Decart closed a $100 million Series B funding round in August 2025, achieving a valuation of $3.1 billion. The round included participation from key investors such as Sequoia Capital, Benchmark, Zeev Ventures, and new backer Aleph VC, bringing Decart’s total funding to $153 million to date. Founded in late 2023 by AI veterans Dr. Dean Leitersdorf and Moshe Shalev, Decart is pioneering production-ready real-time AI video generation models, including its Mirage and Oasis frameworks.