Last year was a groundbreaking one for the AI industry, with startups across the globe securing massive funding to fuel innovation. In the United States alone, 49 companies raised rounds worth $100 million or more in 2024, with some even crossing the billion-dollar mark. Three companies managed to secure multiple mega-rounds, and seven landed funding rounds of $1 billion or higher.
But what about 2025? The year is still young, but the momentum shows no signs of slowing down. Already, nine U.S.-based AI companies have secured funding rounds exceeding $100 million, with one startup raking in over $3 billion in a single round. Let’s dive into the companies that have set the tone for AI funding in 2025.
March: A Blockbuster Start to Spring
Anthropic: $3.5 Billion Series E
Leading the charge in March, AI research and large language model developer Anthropic announced a staggering $3.5 billion Series E round on March 3. This round valued the company at an eye-watering $61.5 billion.
The round was led by Lightspeed, with contributions from heavyweights like Salesforce Ventures, Menlo Ventures, and General Catalyst. Anthropic’s rapid ascent underscores the growing appetite for advanced AI systems, and this funding is set to propel the company even further as it continues to compete with the likes of OpenAI and Google DeepMind.
February: A Month of Massive Raises
Together AI: $305 Million Series B
On February 20, Together AI, an open-source generative AI and model development infrastructure company, secured a $305 million Series B round, valuing the company at $3.3 billion.
The round was co-led by Prosperity7 and General Catalyst, with participation from major names like Salesforce Ventures, Nvidia, and Lux Capital. Together AI’s mission to democratize AI development resonates with investors eager to back infrastructure solutions that can scale across industries.
Lambda: $480 Million Series D
Just a day earlier, on February 19, AI infrastructure startup Lambda announced a $480 million Series D round, placing its valuation at nearly $2.5 billion. The round was co-led by SGW and Andra Capital, with support from Nvidia, G Squared, ARK Invest, and others. Lambda’s focus on high-performance computing for AI workloads has positioned it as a key player in the rapidly growing AI infrastructure space.
Abridge: $250 Million Series D
Meanwhile, in Pittsburgh, healthcare AI startup Abridge raised $250 million on February 17 in a Series D round that valued the company at $2.75 billion.
The company, which uses AI to transcribe and summarize patient-clinician conversations, saw its round co-led by IVP and Elad Gil, with contributions from Lightspeed, Redpoint, and Spark Capital. Abridge’s growth reflects the rising demand for AI-powered healthcare solutions that enhance efficiency and improve patient outcomes.
Eudia: $105 Million Series A
Legal tech startup Eudia raised a $105 million Series A round on February 13, led by General Catalyst. The round also included participation from Floodgate, Defy Ventures, Everywhere Ventures, and several angel investors.
For a Series A, this is an enormous raise, signaling strong investor belief in Eudia’s potential to disrupt the legal industry with AI-driven tools that streamline case management, research, and documentation.
EnCharge AI: $100 Million Series B
Also on February 13, AI hardware company EnCharge AI secured a $100 million Series B round, led by Tiger Global. The round saw participation from Scout Ventures, Samsung Ventures, and RTX Ventures.
Founded in 2022 and based in Santa Clara, EnCharge AI is building next-generation hardware to power complex AI workloads, addressing growing concerns around energy efficiency and computational speed.
Harvey: $300 Million Series D
Wrapping up the month, legal AI startup Harvey closed a $300 million Series D round on February 12, valuing the company at $3 billion.
The round was led by Sequoia, with contributions from the OpenAI Startup Fund, Kleiner Perkins, Elad Gil, and others. Harvey, founded just three years ago, has quickly emerged as a leader in AI-powered legal tech, helping law firms and corporate legal teams supercharge their workflows.
January: Kicking Off 2025 with a Bang
ElevenLabs: $180 Million Series C
On January 30, synthetic voice startup ElevenLabs announced a $180 million Series C round, valuing the company at over $3 billion. The raise was co-led by ICONIQ Growth and Andreessen Horowitz, with participation from Sequoia, NEA, and Salesforce Ventures.
ElevenLabs is at the forefront of generative voice technology, and its platform is rapidly being adopted for applications ranging from content creation to customer service.
Hippocratic AI: $141 Million Series B
Rounding out the list, Hippocratic AI raised a $141 million Series B round on January 9, pushing its valuation past $1.6 billion. The round was led by Kleiner Perkins, with participation from Andreessen Horowitz, Nvidia, and General Catalyst.
Hippocratic AI specializes in developing large language models tailored for the healthcare industry, with a focus on improving patient care through advanced natural language understanding.
The Road Ahead
With only a few months into 2025, it’s clear that investor confidence in AI remains sky-high. Startups across healthcare, legal tech, infrastructure, and voice synthesis are attracting huge rounds, signaling that the AI boom is far from over.
If this early momentum continues, we could very well see even more record-breaking raises and valuations in the months ahead. For founders, developers, and investors alike, 2025 is shaping up to be another transformative year in the world of artificial intelligence.
Stay tuned — this is just the beginning.
