Cohorts of 2021
Companies whose accelerator cohort started in 2021. 1,685 companies.
clusterB2B SaaS 183Consumer 168Fintech 155Healthcare and bio 126Commerce and marketplaces 111Developer tools 68Climate and energy 66Vertical AI agents 66Robotics and physical world 59Security and compliance 34Other 28Data for AI 24Horizontal AI assistants 17Defense and space 15Agent infrastructure 13AI infra and compute 7
| Company | Cluster | Program | Status | Last signal |
|---|---|---|---|---|
| FrizAI AI Social Media Manager | Horizontal AI assistantsAI social media content management | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| PingPong Video messaging app for remote teams. | Horizontal AI assistantsasync video collaboration platform | Y CombinatorW21 | Acquired | checked 2026-08-17 |