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 |
|---|---|---|---|---|
| Curo Electric fleets park and charge anywhere with Curo | Climate and energyEV charging network marketplace | Y CombinatorF24 | Active | checked 2026-08-23 |
| ACX Next-generation biocides for sustainable agriculture at scale | Climate and energysustainable agricultural biotech | Y CombinatorS24 | Active | checked 2026-08-23 |
| Ionworks Simulation software used by leading battery and automotive companies | Climate and energybattery simulation and optimization | Y CombinatorS24 | Active | checked 2026-08-23 |
| NetworkOcean We build and operate underwater data centers. | Climate and energyunderwater data center infrastructure | Y CombinatorS24 | Active | checked 2026-08-23 |
| OffstreamAI Vanta for carbon compliance | Climate and energycarbon compliance automation | Y CombinatorS24 | Active | checked 2026-08-23 |
| Ontra Mobility Platform for cities to optimize transit | Climate and energytransit optimization software | Y CombinatorS24 | Active | checked 2026-08-23 |
| PlumeAI Renewable infrastructure deployment at scale. | Climate and energyAI site selection for renewable infrastructure | Y CombinatorS24 | Active | checked 2026-08-23 |
| Rewbi A stealth mode startup. | Climate and energyrenewable energy infrastructure | Y CombinatorS24 | Active | checked 2026-08-24 |
| Sorcerer Building a nervous system for the atmosphere | Climate and energyatmospheric sensor network for weather | Y CombinatorS24 | Active | checked 2026-08-23 |
| PrecipAI High precision AI weather models | Climate and energyAI weather forecasting for agriculture | Y CombinatorW24 | Active | checked 2026-08-23 |
| SparkAI AI-powered workflows for energy infrastructure | Climate and energyAI workflows for renewable energy permitting | Y CombinatorW24 | Active | checked 2026-08-23 |
| Vista Power Batteries and solar for $0 upfront to help businesses save money | Climate and energySolar and battery financing for businesses | Y CombinatorW24 | Active | checked 2026-08-23 |