Demand vs supply: YC RFS Fall 2026
What YC is asking for (Requests for Startups) against how many recent YC companies (2025+) already build in the mapped cluster. Short bars = open windows.
The Future of American Defense
39
AI-Native Compliance Infrastructure
41
Proving You're Human
41
Multiplayer AI
49
AI for the Aging Population
50
Data for the Real World
60
The Primer
61
AI-Powered Consumer Products for 1 Billion People
61
Compute at Sea
69
The Best Time to Build in Crypto
70
A Cloud for Small Software
88
New Operating Systems for the Physical World
119
Self-Maintaining APIs
214
Mapping RFS theme → cluster is editorial; several themes share a cluster, so identical bars can appear. Supply counts only classified YC companies with a 2025+ batch.