We back

Amboras, YC Spring 2026
Amboras
rellis
Adialante™
AquaShield
About↗ Team↗ Portfolio↗ Pitch us ↗
What we do

12x is an early-stage fund in San Francisco, we write $10–100K checks into founders before or during their entry into Y Combinator, a16z and the other top-tier accelerators.

Who is it for

Founders applying to, interviewing with, or recently accepted into top-tier accelerators who want an early believer in San Francisco before the rest of the market has seen them.

Portfolio

Pitch us.

Building something and thinking about the next batch? Send us a paragraph. We reply to every founder.