Y Combinator companies
The Y Combinator portfolio as the radar sees it: synced daily, classified into clusters, checked for life and movement. 6,198 companies.
| Company | Cluster | Program | Status | Last signal |
|---|---|---|---|---|
| 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 |
| QuestDB High-performance time series database | AI infra and computetime series database infrastructure | Y CombinatorS20 | Active | checked 2026-08-23 |
| AtmoAI Ultra-precise AI weather forecasting. | AI infra and computeAI weather forecasting infrastructure | Y CombinatorW20 | Active | checked 2026-08-23 |
| Fly.io Run full stack apps close to your users. | AI infra and computedistributed app deployment infrastructure | Y CombinatorW20 | Active | 2026-07-29 |
| TermiiAI Termii is an AI-native reliability infrastructure company. | AI infra and computeAI-powered transaction reliability infrastructure | Y CombinatorW20 | Active | checked 2026-08-23 |
| Kern Systems Using DNA to store data. | AI infra and computeDNA data storage infrastructure | Y CombinatorS19 | Active | checked 2026-08-23 |
| Vorticity The Fastest Scientific Computing Platform on the Planet | AI infra and computeScientific computing simulation platform | Y CombinatorS19 | Active | checked 2026-08-23 |
| Wasmer The Operating System for Edge Computing | AI infra and computeWebAssembly runtime and edge compute infrastructure | Y CombinatorS19 | Active | checked 2026-08-23 |
| AssemblyAIAI The best way to build Voice AI apps | AI infra and computeSpeech-to-text and voice understanding API | Y CombinatorS17 | Active | checked 2026-08-23 |
| Veryfi, Inc.AI Document AI. One API Call. | AI infra and computeDocument extraction and fraud detection API | Y CombinatorW17 | Active | checked 2026-08-24 |
| DeepgramAI Building foundational AI for speech transcription and understanding. | AI infra and computeSpeech AI infrastructure and APIs | Y CombinatorW16 | Active | checked 2026-08-23 |
| Protonet Protonet provides the easiest way for a small business to run its own… | AI infra and computeSmall business cloud infrastructure | Y CombinatorW16 | Site unreachable | checked 2026-08-17 |
| Protocol Labs Protocol Labs makes internet protocols: IPFS, Filecoin, and more. | AI infra and computeDecentralized data infrastructure protocols | Y CombinatorS14 | Active | 2026-08-23 |
| Rescale High Performance Computing Built for the Cloud | AI infra and computeCloud HPC and simulation platform | Y CombinatorW12 | Active | checked 2026-08-23 |
| SingleStore The cloud-native, operational database built for speed and scale. | AI infra and computeDistributed database for real-time analytics | Y CombinatorW11 | Active | checked 2026-08-23 |