Most Backed AI Infrastructure Startups 2026

109 AI Infrastructure startups ranked by number of verified backers, led by Anthropic, Groq, Glean. Each links to its full syndicate breakdown.

AI Infrastructure accounts for 120 tracked companies with verified cap-table data, 120 of which disclose round sizes totalling $316B. The median disclosed raise is $453M, and the largest is OpenAI at $117B, ahead of Cerebras Systems ($63B) and Aligned ($12B).

The names that recur most often on these ai infrastructure cap tables are Andreessen Horowitz (16 companies), NVIDIA (15 companies), Nvidia (14 companies), Sequoia Capital (13 companies), General Catalyst (11 companies), BlackRock (8 companies). By latest disclosed round, the market skews Series C (30), Series B (16), Series D (16), Series A (12).

Best funded AI Infrastructure companies

  1. OpenAI — $117B (latest: Growth)
  2. Cerebras Systems — $63B (latest: IPO)
  3. Aligned — $12B (latest: Growth)
  4. xAI — $12B (latest: Series C)
  5. STACK INFRASTRUCTURE — $10B (latest: Growth)
  6. Vantage Data Centers — $9.2B (latest: Growth)
  7. Compass Datacenters — $5.7B (latest: Growth)
  8. Cologix — $5B (latest: Growth)
  9. CoreWeave — $4.9B (latest: IPO)
  10. Crusoe Energy Systems — $3.9B (latest: Series E)
  11. DayOne — $3.9B (latest: Series C)
  12. Databricks — $3.6B (latest: Series H)
  13. Groq — $3B (latest: Growth)
  14. Reflection.Ai — $2B (latest: Series B)
  15. Thinking Machines Lab — $2B (latest: Seed)

More AI Infrastructure research (3)

Research on comparable markets (14)

Sector × city funding reports (20)

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