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 |
|---|---|---|---|---|
| Dome A unified API for prediction markets, like Kalshi and Polymarket | Commerce and marketplacesprediction market infrastructure API | Y CombinatorF25 | Inactive | checked 2026-08-23 |
| RovrAI AI FDE Engine that runs your engineering workflows | Developer toolsAI engineering ops automation | Y CombinatorF25 | Inactive | checked 2026-08-23 |
| SylvianAI Specialized AI Agents. | Agent infrastructureAI agent building platform | Y CombinatorF25 | Inactive | checked 2026-08-17 |
| NuntiusAI Making Models Follow Rules. | Agent infrastructureAI model alignment and safety | Y CombinatorS25 | Inactive | checked 2026-08-23 |
| CaucusAI AI CRM for Government | Vertical AI agentsAI CRM for government agencies | Y CombinatorX25 | Inactive | checked 2026-08-23 |
| Kanava AIAI Your First AI Sales Hire for Wholesale Distributors | Vertical AI agentsAI sales agent for wholesale distributors | Y CombinatorX25 | Inactive | checked 2026-08-23 |
| PercivalAI Accelerating data analysis for research | Data for AIAI copilot for research data analysis | Y CombinatorX25 | Inactive | checked 2026-08-23 |
| AltrinaAI The SOP Automation Platform | Vertical AI agentsSOP automation for enterprises | Y CombinatorW25 | Inactive | checked 2026-08-23 |
| Sublingual Daily productivity tracker | Developer toolsTeam productivity and shipping tracking | Y CombinatorW25 | Inactive | checked 2026-08-23 |