Most Backed AI Infrastructure Startups in San Francisco, CA
44 AI Infrastructure startups in San Francisco, CA ranked by verified backer count, led by Anthropic, Decagon, OpenAI.
AI Infrastructure in San Francisco, CA accounts for 78 tracked companies with verified cap-table data, 78 of which disclose round sizes totalling $159B. The median disclosed raise is $155M, and the largest is OpenAI at $117B, ahead of xAI ($12B) and Databricks ($3.6B).
The names that recur most often on these ai infrastructure cap tables are Andreessen Horowitz (12 companies), General Catalyst (8 companies), NVIDIA (8 companies), Y Combinator (7 companies), Sequoia Capital (7 companies), Lightspeed Venture Partners (7 companies). By latest disclosed round, the market skews Series B (19), Series A (16), Series C (14), Seed (11).
Companies tracked: 78
Disclosed funding total: $159B across 78 companies
Median disclosed raise: $155M
Largest raise: OpenAI — $117B
Stage mix: Series B 19 · Series A 16 · Series C 14 · Seed 11
Most recent dated round: 2026-06-16
Best funded AI Infrastructure in San Francisco, CA companies
