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 |
|---|---|---|---|---|
| Ferveret Nuclear-inspired cooling that turns wasted power into more AI compute | AI infra and computedata center cooling hardware | Y CombinatorS21 | Active | checked 2026-08-23 |
| MindPortalAI Thought-to-Language AI Models | AI infra and computeBrain-computer interface AI models | Y CombinatorW21 | Inactive | checked 2026-08-23 |
| Mystic Low latency API to run and deploy ML models | AI infra and computeML model serving and inference | Y CombinatorW21 | Site unreachable | checked 2026-08-17 |
| OllamaAI Get up and running with large language models. | AI infra and computeLocal LLM inference runtime | Y CombinatorW21 | Active | checked 2026-08-23 |