Cohorts of 2023
Companies whose accelerator cohort started in 2023. 2,105 companies.
| Company | Cluster | Program | Status | Last signal |
|---|---|---|---|---|
| AutotabAI AI agents reliable enough to do real work | Horizontal AI assistantsAI workflow automation agents | Y CombinatorS23 | Acquired | checked 2026-08-23 |
| COREAI Your AI butler that understands you really well and proactively acts… | Horizontal AI assistantspersonal AI assistant for productivity | Y CombinatorS23 | Active | checked 2026-08-23 |
| KhojAI AI for humans | Horizontal AI assistantsOpen source AI assistant for productivity | Y CombinatorS23 | Active | checked 2026-08-23 |
| LangdockAI The all-in-one AI platform for companies. | Horizontal AI assistantsenterprise AI chat and workflow automation | Y CombinatorS23 | Active | checked 2026-08-23 |
| Obento HealthAI CRM Co-Pilot for Medtech Sales | Horizontal AI assistantsCRM copilot for medtech sales | Y CombinatorS23 | Site unreachable | checked 2026-08-24 |
| OnwardAI Intelligent meeting automation for ambitious teams. | Horizontal AI assistantsMeeting automation and follow-up | Y CombinatorS23 | Inactive | - |
| UpstreamAI The first inbox designed for humans and agents | Horizontal AI assistantsAI email agent assistant | Y CombinatorS23 | Active | checked 2026-08-23 |
| WebhoundAI Long-horizon research agents | Horizontal AI assistantsLong-horizon research automation | Y CombinatorS23 | Active | checked 2026-08-23 |
| Alphawatch AIAI Discover new opportunities (jobs, deals, investors) | Horizontal AI assistantsAI-powered relationship intelligence platform | Y CombinatorW23 | Active | checked 2026-08-23 |
| BackdropAI AI coworkers for running projects and operations | Horizontal AI assistantsAI project and operations management | Y CombinatorW23 | Active | checked 2026-08-23 |
| EchoAI Founder-led sales co-pilot for B2B startups. | Horizontal AI assistantsAI sales copilot for founders | Y CombinatorW23 | Inactive | checked 2026-08-24 |
| EpsilonAI AI Search Engine for Academic Research | Horizontal AI assistantsAI search for academic research | Y CombinatorW23 | Active | checked 2026-08-23 |
| FintoolAI Financial copilot for institutional investors | Horizontal AI assistantsFinancial analysis copilot for investors | Y CombinatorW23 | Acquired | 2026-08-23 |
| FrigadeAI AI-powered product assistance for modern software teams | Horizontal AI assistantsAI-powered in-app product assistant | Y CombinatorW23 | Active | checked 2026-08-23 |
| LayupAI Guide your users. Right in your product. | Horizontal AI assistantsAI-powered in-app guidance and documentation | Y CombinatorW23 | Inactive | checked 2026-08-23 |
| LinkGrepAI AI browser copilot for teams | Horizontal AI assistantsAI browser copilot for team collaboration | Y CombinatorW23 | Active | checked 2026-08-23 |
| ParabolicAI AI assistant for customer support | Horizontal AI assistantsAI customer support copilot | Y CombinatorW23 | Inactive | checked 2026-08-17 |
| TypeAI AI-native storytelling studio. | Horizontal AI assistantsAI storytelling assistant for creators | Y CombinatorW23 | Active | checked 2026-08-23 |
| UnifyAI AI teammates for everyone else 🤖 | Horizontal AI assistantsAI teammates for productivity tasks | Y CombinatorW23 | Active | checked 2026-08-23 |
| VaeroAI AI for Human Writing | Horizontal AI assistantsAI writing assistant for personalized style | Y CombinatorW23 | Active, new domain | 2026-08-23 |
| VellumAI Vellum: Your Personal Intelligence | Horizontal AI assistantsPersonal AI assistant with memory | Y CombinatorW23 | Active | checked 2026-08-23 |