The AI industry saw unprecedented investment in 2024, with 49 startups securing funding rounds of $100 million or more. Seven of these rounds surpassed $1 billion, signaling strong investor confidence in AI’s future. As 2025 unfolds, the trend continues. The number of U.S.-based AI startups that have raised over $100 million is already nearing double digits, and at least one mega-round has exceeded $1 billion.
Major AI Funding Rounds in 2025
March
- Anthropic – Raised $3.5 billion in a Series E round, valuing the AI research and large language model startup at $61.5 billion. Investors include Lightspeed, Salesforce Ventures, Menlo Ventures, and General Catalyst.
February
- Together AI – Secured $305 million in a Series B round, valuing the company at $3.3 billion. Investors include Prosperity7, General Catalyst, Salesforce Ventures, Nvidia, Lux Capital, and others.
- Lambda – Raised $480 million in a Series D round, with a valuation of $2.5 billion. Co-led by SGW and Andra Capital, with participation from Nvidia, G Squared, ARK Invest, and others.
- Abridge – This Pittsburgh-based AI platform for medical transcription raised $250 million in a Series D round, valuing it at $2.75 billion. Investors include IVP, Elad Gil, Lightspeed, Redpoint, and Spark Capital.
- Eudia – The AI legal tech startup secured $105 million in a Series A round led by General Catalyst, with backing from Floodgate, Defy Ventures, and Everywhere Ventures.
- EnCharge AI – Raised $100 million in a Series B round, led by Tiger Global, with participation from Scout Ventures, Samsung Ventures, and RTX Ventures.
- Harvey – An AI-powered legal tech startup, raised $300 million in a Series D round, valuing the company at $3 billion. Led by Sequoia, with participation from OpenAI Startup Fund, Kleiner Perkins, and Elad Gil.
January
- ElevenLabs – A synthetic voice startup, raised $180 million in a Series C round, surpassing a $3 billion valuation. Investors include ICONIQ Growth, Andreessen Horowitz, Sequoia, NEA, and Salesforce Ventures.
- Hippocratic AI – Developing LLMs for the healthcare sector, the startup secured $141 million in a Series B round, with a valuation of $1.6 billion. Investors include Kleiner Perkins, Andreessen Horowitz, Nvidia, and General Catalyst.
What’s Next for AI Funding in 2025?
With multiple AI companies securing hundreds of millions in funding early in the year, investor interest remains high. As AI adoption accelerates, especially in healthcare, legal tech, and infrastructure, more billion-dollar rounds may emerge.
Stay tuned as AI funding trends continue to reshape the technology landscape in 2025.
