Cohorts of 2015
Companies whose accelerator cohort started in 2015. 757 companies.
clusterConsumer 145B2B SaaS 99Commerce and marketplaces 76Fintech 48Healthcare and bio 37Developer tools 36Robotics and physical world 27Other 24Security and compliance 20Climate and energy 15Vertical AI agents 11Data for AI 10AI infra and compute 8Agent infrastructure 4Horizontal AI assistants 4Defense and space 2
| Company | Cluster | Program | Status | Last signal |
|---|---|---|---|---|
| Reduced Energy Microsystems Building the lowest-power silicon for embedded deep learning and… | AI infra and computelow-power edge AI silicon | Y CombinatorS15 | Inactive | checked 2026-08-17 |
| Nextop Nextop optimizes the path between your app and backend. Client… | AI infra and computemobile CDN and network optimization | Y CombinatorW15 | Inactive | checked 2026-08-17 |
| Paperspace Paperspace is a cloud platform for building and scaling AI… | AI infra and computeGPU cloud platform for AI | Y CombinatorW15 | Acquired | checked 2026-08-23 |
| Raven TechAI Our vision is to build the next generation of iOS or Android, to… | AI infra and computeNext-generation OS with AI | Y CombinatorW15 | Acquired | checked 2026-08-17 |
| SigOpt SigOpt is an Optimization-as-a-Service platform that seamlessly tunes… | AI infra and computeML hyperparameter optimization platform | Y CombinatorW15 | Acquired | 2026-08-23 |