Y Combinator companies
The Y Combinator portfolio as the radar sees it: synced daily, classified into clusters, checked for life and movement. 6,198 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 152Climate and energy 123Defense and space 85Other 44
| Company | Cluster | Program | Status | Last signal |
|---|---|---|---|---|
| Tesseract Tesseract builds better thrusters for modern satellites | Defense and spacesatellite propulsion systems | Y CombinatorS17 | Active | checked 2026-08-23 |
| Wright Electric Boeing for electric planes | Defense and spaceelectric aircraft manufacturing | Y CombinatorW17 | Active | checked 2026-08-23 |