In the first half of 2025, 24 U.S.-based AI startups have each raised $100 million or more, continuing the massive funding momentum seen in 2024. Among the most significant raises are Anysphere’s $900 million Series C round and OpenAI’s $40 billion mega-round, which pushed its valuation to $300 billion. Companies like SandboxAQ, Runway, Anthropic, and Shield AI also secured multi-hundred-million-dollar rounds, emphasizing a strong appetite for AI infrastructure, defense tech, and creative tools. Funding has flowed across verticals, from enterprise search and coding to healthcare, legal tech, and voice synthesis. This early surge in capital suggests that 2025 may rival or even surpass last year’s record-setting pace for AI investment.
Notably, Hippocratic AI stood out among the early fundraisers with a $141 million Series B round announced in January. Specializing in safety-focused large language models for healthcare, Hippocratic AI’s valuation rose to over $1.6 billion in this round led by Kleiner Perkins, with backing from prominent investors like Andreessen Horowitz, Nvidia, and General Catalyst. The company’s inclusion on this elite list underscores growing investor confidence in verticalized AI solutions—particularly those aimed at high-impact sectors like healthcare, where Hippocratic AI is working to deploy generative AI agents for non-diagnostic clinical tasks.