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 |
|---|---|---|---|---|
| RemyAI Making it simpler for medical clinics to work with insurance | Vertical AI agentsInsurance automation for medical clinics | Y CombinatorS23 | Inactive | checked 2026-08-17 |
| SidenoteAI Meeting follow-up, automated | Vertical AI agentsMeeting follow-up automation | Y CombinatorS23 | Inactive | checked 2026-08-23 |
| OpenSightAI AI-powered customer support automation for fast-growing companies | Vertical AI agentsAI customer support automation | Y CombinatorW23 | Inactive | checked 2026-08-17 |
| SerialAI Root cause manufacturing issues in seconds | Vertical AI agentsAI root cause analysis for manufacturing | Y CombinatorW23 | Inactive | checked 2026-08-17 |
| StructAI Multi-lingual AI Voice Agents | Vertical AI agentsMulti-lingual AI voice agents for phone tasks | Y CombinatorW23 | Inactive | 2026-08-23 |