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 153AI infra and compute 152Climate and energy 123Defense and space 85Other 44
| Company | Cluster | Program | Status | Last signal |
|---|---|---|---|---|
| Reduced Energy Microsystems Building the lowest-power silicon for embedded deep learning and… | AI infra and computelow-power edge AI silicon | Y CombinatorS15 | Inactive | checked 2026-08-17 |
| Nextop Nextop optimizes the path between your app and backend. Client… | AI infra and computemobile CDN and network optimization | Y CombinatorW15 | Inactive | checked 2026-08-17 |
| Paperspace Paperspace is a cloud platform for building and scaling AI… | AI infra and computeGPU cloud platform for AI | Y CombinatorW15 | Acquired | checked 2026-08-23 |
| Raven TechAI Our vision is to build the next generation of iOS or Android, to… | AI infra and computeNext-generation OS with AI | Y CombinatorW15 | Acquired | checked 2026-08-17 |
| SigOpt SigOpt is an Optimization-as-a-Service platform that seamlessly tunes… | AI infra and computeML hyperparameter optimization platform | Y CombinatorW15 | Acquired | 2026-08-23 |