AI funding in the U.S. is still booming in 2025. Even though we’re only halfway through the year, two dozen startups have already pulled in $100 million or more — and some even crossed the billion-dollar mark.
In 2024, we saw 49 startups raise mega-rounds of funding (some even raised more than once). It was a record-breaking year for AI. And now, it looks like 2025 is keeping that energy going — maybe even turning it up a notch.
Let’s take a look at the 24 U.S. AI startups that hit or passed the $100 million mark in 2025 (so far).
June: Glean and Anysphere Dominate
- Glean, which helps companies search their internal data more easily, raised $150 million in a Series F. Its new valuation? $7.25 billion.
- Anysphere, the team behind the popular AI coding tool Cursor, raised a whopping $900 million. That puts them close to a $10 billion valuation.
May: Tools for Developers and AI Infra Heat Up
- Snorkel AI, known for smart data labeling, landed $100 million in a Series D.
- LMArena, a benchmarking platform for AI models, raised $100 million right out of the gate — as a seed round. That’s rare.
- TensorWave, based in Las Vegas and building infrastructure for AI workloads, also brought in $100 million in Series A funding.
April: AI Gets Creative and Quantum
- SandboxAQ, which blends AI with quantum security, raised a massive $450 million.
- Runway, the company behind AI video tools that many creators love, locked in $308 million.
March: Biggest Month Yet
March was huge. A few highlights:
The Big Ones:
- OpenAI shattered records with a $40 billion round. Yep, billion. With a B.
- Anthropic brought in $3.5 billion, pushing its value to a stunning $61.5 billion.
Other March Rounds:
- Nexthop AI – $110M (infra tools)
- Insilico Medicine – $110M (drug discovery)
- Celestial AI – $250M (chip and hardware tech)
- Lila Sciences – $200M (science-focused AI)
- Reflection.Ai – $130M (autonomous systems)
- Turing – $111M (AI tools for devs)
- Shield AI – $240M (defense tech)
February: Healthcare and Legal AI Take the Lead
- Together AI – $305M to support open-source AI infrastructure.
- Lambda – $480M for AI chips and compute power.
- Abridge – $250M for transcribing doctor-patient convos. (Valued at $2.75B)
- Eudia – $105M to shake up the legal tech space.
- EnCharge AI – $100M to build AI hardware.
- Harvey – $300M to create legal AI assistants. (Valued at $3B)
January: Starting 2025 with a Bang
- ElevenLabs – $180M for realistic AI voice generation. The startup is now worth over $3B.
- Hippocratic AI – $141M to build trustworthy healthcare-focused AI systems.
At a Glance: The 24 AI Startups with $100M+ Raises in 2025
Here’s a quick look at the companies leading the funding charts this year:
| Company | Amount Raised | Area of Focus |
| OpenAI | $40B | General AI / LLMs |
| Anthropic | $3.5B | Foundation Models |
| Anysphere | $900M | AI Code Assistant |
| SandboxAQ | $450M | Quantum + AI Security |
| Lambda | $480M | AI Hardware & Compute |
| Runway | $308M | AI for Media & Creativity |
| Harvey | $300M | AI for Legal Work |
| Together AI | $305M | Open Source AI Infra |
| Celestial AI | $250M | Optical Chip Technology |
| Abridge | $250M | AI in Healthcare |
| Shield AI | $240M | Defense + Autonomous Drones |
| Lila Sciences | $200M | AI for Scientific Research |
| ElevenLabs | $180M | Voice AI |
| Hippocratic AI | $141M | AI for Doctors/Patients |
| Glean | $150M | Enterprise Search |
| Reflection.Ai | $130M | AI for Autonomous Systems |
| Insilico Medicine | $110M | AI Drug Discovery |
| Nexthop AI | $110M | AI Infrastructure |
| Turing | $111M | Developer AI Tools |
| Eudia | $105M | Legal Tech |
| EnCharge AI | $100M | AI Chips |
| Snorkel AI | $100M | Data Labeling |
| LMArena | $100M | AI Benchmarking |
| TensorWave | $100M | AI Infrastructure |
What This Means
The AI gold rush isn’t slowing down — and 2025 might even outpace 2024 in funding totals. From massive infrastructure plays to niche tools for doctors and lawyers, investors are pouring money into all corners of the AI world.
With more than $50 billion raised already, the rest of the year should be just as exciting.
Final Thoughts
It’s wild to think we’re just halfway through the year and already seeing this many 9- and 10-figure deals in AI. If you’re keeping an eye on emerging tech, this list is a snapshot of where the real innovation (and money) is flowing in 2025.