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 |
|---|---|---|---|---|
| D-IDAI Enable creators and developers to generate realistic AI personas | Developer toolsAI video generation APIs for creators | Y CombinatorS17 | Active | checked 2026-08-23 |
| Escher Reality The backend for Augmented Reality. | Developer toolsAugmented Reality API platform | Y CombinatorS17 | Acquired | checked 2026-08-23 |
| PlasticityAI Natural language processing APIs for developers. | Developer toolsNLP APIs for developers | Y CombinatorS17 | Acquired | checked 2026-08-23 |
| PullRequest Code review as a service - combining automation with a network of… | Developer toolscode review automation and services | Y CombinatorS17 | Acquired | checked 2026-08-23 |
| Armory Continuous Deployment at any scale, for all developers. | Developer toolsContinuous deployment and release automation | Y CombinatorW17 | Acquired | checked 2026-08-17 |
| Bitrise Hosted Continuous Integration and Delivery for mobile apps | Developer toolsCI/CD for mobile apps | Y CombinatorW17 | Active | checked 2026-08-23 |
| FastJVM Making the JVM faster | Developer toolsJVM performance optimization and parallelization | Y CombinatorW17 | Active | checked 2026-08-23 |
| Retool Build internal tools fast. | Developer toolsLow-code internal tools platform | Y CombinatorW17 | Active | checked 2026-08-23 |
| Scaphold.io The Universal API | Developer toolsGraphQL API platform for developers | Y CombinatorW17 | Acquired | 2026-08-23 |