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 |
|---|---|---|---|---|
| Airtrain AIAI No-code data curation for LLM fine-tuning and evaluation. | Data for AIData curation for LLM fine-tuning | Y CombinatorS22 | Inactive | checked 2026-08-23 |
| Denormalized serverless platform for real-time data | Data for AIserverless real-time data platform | Y CombinatorS22 | Inactive | checked 2026-08-23 |
| Grai Open source version control for metadata | Data for AImetadata versioning and lineage tracking | Y CombinatorS22 | Inactive | 2026-07-30 |
| Superpowered AIAI API for Retrieval Augmented Generation | Data for AIRAG infrastructure for LLM applications | Y CombinatorS22 | Inactive | checked 2026-08-17 |