17 US AI Companies That Raised $100M+ in 2026: The Complete List
The AI funding frenzy shows no signs of slowing down. In less than two months of 2026, nearly 20 US-based AI startups have raised mega rounds of $100 million or more — a pace that could rival or exceed 2025's record-breaking $76 billion in megarounds.
From Elon Musk's xAI kicking off the year with a staggering $20 billion raise to Anthropic's $30 billion Series G at a $380 billion valuation, the numbers are eye-watering. Here is the complete breakdown of every US AI company that has closed a $100M+ round so far in 2026.
February 2026 Mega Rounds
Anthropic — $30 Billion Series G ($380B valuation)
The Claude AI maker announced the largest round on this list on February 12. Over 30 investors participated, including Founders Fund, Coatue, and Nvidia. At $380 billion, Anthropic is now one of the most valuable private companies in the world.
ElevenLabs — $500 Million Series D ($11B valuation)
The voice AI company closed a massive round led by Sequoia on February 4. ElevenLabs has become the go-to platform for AI-generated voice content, and its valuation reflects the explosive growth of audio AI applications.
Runway — $315 Million Series E ($5.3B valuation)
The media generation platform raised its Series E led by General Atlantic on February 10. Nvidia, Fidelity, and Felicis also invested. Runway continues to push the boundaries of AI-powered video and image creation.
Fundamental — $255 Million Series A ($1.4B valuation)
This AI research company announced a hefty Series A on February 5. Investors included Oak HC/FT, Salesforce Ventures, Valor Equity Partners, and QP Ventures.
Goodfire — $150 Million Series B ($1.25B valuation)
The AI research lab announced its round on February 5, led by B Capital with participation from Juniper Ventures, Lightspeed Venture Partners, and Menlo Ventures.
Simile — $100 Million Series A
Building AI to mimic human decisions, Simile raised a round led by Index Ventures on February 12, with Hanabi Capital, Bain Capital Ventures, and multiple angel investors participating.
January 2026 Mega Rounds
xAI — $20 Billion Series E
Elon Musk's AI lab started 2026 with a bang on January 6. Valor Equity Partners, Fidelity, and the Qatar Investment Authority participated. The company was later acquired by Musk's SpaceX.
SkildAI — $1.4 Billion Series C ($14B valuation)
Building AI models to power robots, SkildAI closed the second-largest single round on this list on January 14. SoftBank and Nvidia led the round, signaling massive confidence in AI-powered robotics.
humans& — $480 Million Seed Round ($4.48B valuation)
In one of the largest seed rounds ever, this AI research lab attracted Nvidia, Jeff Bezos, and GV among its investors on January 20.
Baseten — $300 Million Series E ($5B valuation)
The AI infrastructure startup raised a round led by IVP and CapitalG on January 23. Infrastructure plays continue to attract massive investment as companies build the plumbing for the AI era.
Decagon — $250 Million Series D ($4.5B valuation)
The conversational AI platform announced its round on January 28, co-led by Coatue and Index Ventures. Enterprise AI assistants remain one of the hottest categories.
OpenEvidence — $250 Million Series D ($12B valuation)
Based in Cambridge, Massachusetts, OpenEvidence raised for its medical AI chatbot on January 21. Thrive Global and DST Global co-led. The $12 billion valuation makes it one of the most valuable healthcare AI companies.
Flapping Airplanes — $180 Million Seed Round ($1.5B valuation)
This AI research lab raised from Google Ventures, Sequoia, and Index Ventures on January 28. Another monster seed round reflecting investor appetite for foundational AI research.
Arena — $150 Million Series A ($1.7B valuation)
The large language model evaluation platform raised a round co-led by Felicis and UC Investments on January 6. Just one year old, Arena is already valued at $1.7 billion.
PaleBlueDot AI — $150 Million Series B ($1B valuation)
The compute platform raised its round led by B Capital on January 28, reaching unicorn status.
Inferact — $150 Million Seed Round ($800M valuation)
The AI inference startup raised mere months after founding. Andreessen Horowitz and Lightspeed Venture Partners co-led the January 22 round.
Deepgram — $130 Million Series C ($1.3B valuation)
The voice AI platform raised a round led by AVP on January 13, with Tiger Global, ServiceNow Ventures, and Madrona also investing.
The Bottom Line
The combined funding across these 17 companies totals roughly $54 billion in just the first seven weeks of 2026. The largest rounds — xAI ($20B) and Anthropic ($30B) — alone account for over $50 billion, but even excluding those two outliers, the remaining 15 companies raised approximately $4 billion collectively.
The key takeaway? AI investment is not just continuing — it is accelerating. Seed rounds north of $100 million, Series A rounds that would have been respectable Series C's just two years ago, and valuations that defy traditional startup metrics are becoming the new normal. Whether this pace is sustainable remains the trillion-dollar question of 2026.