For some, AI fatigue is settling in. But for venture investors, artificial intelligence remains a scorching hot category. In 2024, AI startups based in the U.S. continued to dominate the venture capital landscape, with dozens raising funding rounds exceeding $100 million.

According to Crunchbase data, AI companies secured a staggering $19 billion in venture capital during Q3 alone, accounting for 28% of all VC investment during the quarter. The buying frenzy continued into Q4 with Elon Musk’s xAI closing a $6 billion round—one of seven billion-dollar AI deals this year. Notably, OpenAI led the pack with a $6.6 billion raise and a valuation of $157 billion.

Below is a comprehensive list of 49 U.S.-based AI companies that raised $100 million or more in 2024. These high-growth ventures are leading innovation across AI infrastructure, generative AI, robotics, and more.

December 2024

• Liquid AI: $250M Series A | Valuation: $2.35B
• Tractian: $120M Series C | Valuation: $720M
• Tenstorrent: $693M Series D | Valuation: $2.7B

November 2024

• xAI (Elon Musk): $6B | Valuation: $50B
• Enfabrica: $115M Series C
• Writer: $200M Series C | Valuation: $1.9B
• Physical Intelligence: $400M Series A | Valuation: $2B+

October 2024

• Sierra: $175M | Valuation: $4.5B
• Nimble Robotics: $106M Series C | Valuation: $1.1B
• Lightmatter: $400M Series D | Valuation: $4.4B
• Path Robotics: $100M Series D
• EvenUp: $135M Series D | Valuation: $1B
• KoBold Metals: $491.5M
• Poolside: $500M Series B | Valuation: $3B
• OpenAI: $6.6B | Valuation: $157B

September 2024

• Glean: $260M Series E | Valuation: $4.5B
• Safe Superintelligence: $1B | Valuation: $4B

August 2024

• Magic: $320M Series C
• Codeium: $150M Series C | Valuation: $1.2B
• DevRev: $100M Series A | Valuation: $1.1B
• Abnormal Security: $250M | Valuation: $5B+
• Groq: $640M Series D | Valuation: $3B+

July 2024

• World Labs (Fei-Fei Li): $100M | Valuation: $1B+
• Harvey: $100M Series C | Valuation: $1.5B
• Hebbia: $130M | Valuation: $700M
• Skild AI: $300M Series A | Valuation: $1.5B

June 2024

• Bright Machines: $106M Series C
• Etched.ai: $120M Series A
• EvolutionaryScale: $142M Seed
• AKASA: $120M
• AlphaSense: $650M Series F | Valuation: $4B

May 2024

• xAI (Elon Musk): $6B Series B | Valuation: $24B
• Scale AI: $1B Series F | Valuation: ~$14B
• Suno: $125M Series B | Valuation: $500M
• Weka: $140M Series E | Valuation: $1.6B
• CoreWeave: $1.1B Series C | Valuation: $19B

April 2024

• Blaize: $106M Series D
• Augment: $227M Series B
• Cognition: $175M | Valuation: ~$2B
• Xaira Therapeutics: $1B Series A
• Cyera: $300M Series C | Valuation: $1.4B

March 2024

• Celestial AI: $175M Series C
• FundGuard: $100M Series C | Valuation: $400M
• Together AI: $106M Series A | Valuation: $1.2B
• Zephyr AI: $111M Series A

February 2024

• Glean: $203M Series D | Valuation: $2.2B
• Figure: $675M Series B | Valuation: $2.7B
• Abridge: $150M Series C | Valuation: $850M
• Recogni: $102M Series C
• Lambda: $320M Series C | Valuation: $1.5B
• Magic: $117M Series B

January 2024

• Kore.ai: $150M Series D

Final Thoughts

The momentum behind U.S. AI startups shows no signs of slowing down. With funding rounds continuing to climb and valuations reaching eye-watering heights, 2024 is shaping up to be a landmark year for artificial intelligence innovation. These well-funded startups are driving next-generation advancements in AI infrastructure, robotics, language models, enterprise tools, and beyond. Whether you’re tracking trends or scouting the next unicorn, keeping an eye on these movers is essential.