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 |
|---|---|---|---|---|
| AssemblyAIAI The best way to build Voice AI apps | AI infra and computeSpeech-to-text and voice understanding API | Y CombinatorS17 | Active | checked 2026-08-23 |
| LyrebirdAI Our tech speaks for itself. | AI infra and computeSpeech synthesis API for developers | Y CombinatorS17 | Acquired | 2026-08-23 |
| FloydHub ML Platform for developing, training and deploying ML models | AI infra and computeML model training and deployment platform | Y CombinatorW17 | Inactive | checked 2026-08-17 |
| Peer5 P2P delivery network that enables high quality video streaming | AI infra and computeP2P video delivery network | Y CombinatorW17 | Acquired | checked 2026-08-17 |
| Terark Fastest Storage Engine with the Best Compression, we enables direct… | AI infra and computeDatabase storage engine and compression | Y CombinatorW17 | Acquired | checked 2026-08-17 |
| Veryfi, Inc.AI Document AI. One API Call. | AI infra and computeDocument extraction and fraud detection API | Y CombinatorW17 | Active | checked 2026-08-24 |