Y Combinator companies
The Y Combinator portfolio as the radar sees it: synced daily, classified into clusters, checked for life and movement. 6,197 companies.
clusterVertical AI agents 898Consumer 821B2B SaaS 787Fintech 633Developer tools 515Healthcare and bio 477Commerce and marketplaces 433Agent infrastructure 350Robotics and physical world 314Data for AI 192Security and compliance 189Horizontal AI assistants 152AI infra and compute 151Climate and energy 123Defense and space 85Other 44
| Company | Cluster | Program | Status | Last signal |
|---|---|---|---|---|
| Momentus The space infrastructure services company | Defense and spacein-space transport and logistics | Y CombinatorS18 | Public company | checked 2026-08-23 |
| PaladinAI We deploy autonomous drones to 911 calls. Our software gives first… | Defense and spaceemergency response drones | Y CombinatorS18 | Active | checked 2026-08-23 |