Most Active AI Infrastructure Investors in Menlo Park 2026

10 firms writing AI Infrastructure checks in Menlo Park, led by Mayfield Fund, Lightspeed Venture Partners.

AI Infrastructure in Menlo Park accounts for 6 tracked companies with verified cap-table data, 6 of which disclose round sizes totalling $1.4B. The median disclosed raise is $81M, and the largest is Safe Superintelligence at $1B, ahead of Snorkel AI ($135M) and AttoTude ($81M).

The names that recur most often on these ai infrastructure cap tables are Greylock (2 companies), SV Angel (1 company), DST Global (1 company), Sequoia Capital (1 company), Andreessen Horowitz (1 company), NFDG (1 company). By latest disclosed round, the market skews Series B (3), Series A (2), Series D (1).

Best funded AI Infrastructure in Menlo Park companies

  1. Safe Superintelligence — $1B (latest: Series A)
  2. Snorkel AI — $135M (latest: Series D)
  3. AttoTude — $81M (latest: Series B)
  4. Reevo — $80M (latest: Series A)
  5. Selector — $66M (latest: Series B)
  6. Onehouse — $43M (latest: Series B)

Sector × city funding reports (20)

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•By Alejandro Cremades