Companies167
Active96%
Acquired or public2%
Inactive2%
Y Combinator's directory lists 167 companies in the Summer 2025 batch: 160 Active, 3 Acquired, 0 Public and 4 Inactive. Summer 2025 is less than two years out, so its Inactive share (2%) is not yet comparable with older batches (23% across batches at least two years old).
ActiveAcquiredPublicInactive
Statuses are Y Combinator's own listing in its public company directory, read on the date shown. YC's directory can drop companies altogether, so the Inactive counts here are a floor, not a full count of companies that stopped. Acquired and Public are as YC lists them; neither says anything about the price or the outcome for founders.
What the directory lists about Summer 2025
- By the industry YC files each company under: B2B 113, Industrials 15, Consumer 12, Healthcare 11, Fintech 9, Real Estate and Construction 4, Education 2, Government 1.
- Where 165 of the 167 companies say they are based, by the first location each lists: San Francisco, CA, USA (110), New York City, NY, USA (26), London, England, United Kingdom (3), San Francisco (3), Austin, TX, USA (2), Amsterdam, NH, Netherlands (1), Berlin, Berlin, Germany (1), Boston, MA, USA (1), and 18 other places.
- Earlier names on the entries: Acrely (earlier Zetlkast); Alara (earlier DentalSteals); Albacore Inc. (earlier Albacore Ocean Systems, Inc.); Alter (earlier Alter AI); Ambral (earlier Helium, Halidom and Ambral AI); args (earlier Async and gitdot); Astor (earlier Gaus); Autumn (earlier Recase); Avelis Health (earlier Avelis); b12 Labs (earlier B12 and b-12); Bitrig (earlier Aurelia); Bizzy AI (earlier Visibl.ai and Geo AI); Blank Bio (earlier Orthrus Bio); Blue (earlier L5 Assistant); BootLoop (earlier BootLoop, Inc.); and 74 more.
- Status changes seen since tracking began on September 26, 2026: Closera, Active to Inactive (seen October 21, 2026); Acrely, Active to Inactive (seen October 17, 2026).
Every company in Summer 2025
| Company | What they do | Status | Team |
|---|---|---|---|
| Adaptional | AI-powered insurance claims review | Active | — |
| AgentMail | Email Inboxes for AI Agents | Active | 10 |
| Alara | Procurement Platform for Dental Offices | Active | — |
| Albacore Inc. | Drone submarines | Active | 18 |
| Alter | Privileged Access Management for AI Agents | Active | 2 |
| Altur | Voice AI Agents for Debt Collection | Active | 9 |
| Ambral | AI for account management and customer success | Active | 4 |
| args | A better GItHub | Active | 2 |
| Astor | Your personal investing agent | Active | 5 |
| Autosana | AI agents for E2E testing across mobile & web | Active | 5 |
| Autumn | Billing infrastructure for AI | Active | 5 |
| Avelis Health | We audit medical claims for self-insured employers and health plans. | Active | 3 |
| Avent | AI agents for industrial commerce | Active | 5 |
| b12 Labs | Making hard molecules for Pharma and Biotech | Active | 3 |
| Bitrig | Build and ship native Swift apps with AI | Active | 3 |
| Bizzy AI | Bizzy works 24/7 so you never miss a lead. | Active | — |
| Blank Bio | RNA intelligence for precision medicine | Active | 6 |
| Blue | AI rebuilt coding. We’re rebuilding the phone | Active | 7 |
| BootLoop | Firmware in minutes, not months - rigorously tested on real hardware | Active | 3 |
| burnt | Agentic Operating System for Food Supply Chain | Active | 3 |
| Cactus Compute | Automation Foundation Models For Tiny Devices | Active | 8 |
| CareSwift | AI scribe for Ambulance Reports | Active | 2 |
| Certus AI | Replacing the restaurant phone line with Voice AI | Active | 8 |
| Channel3 | Database of every product on the internet | Active | 5 |
| Char | The AI notepad that knows and works for you | Active | 3 |
| CLODO | Planet-scale people discovery. | Active | 2 |
| cocreate | video production software | Active | 10 |
| Comena | AI agents for distributors and manufacturers to automate order entry. | Active | 8 |
| ContextFort | Visibility and Controls for Browser Agents | Active | 2 |
| Convexia | The world's first AI-maximalist pharma company | Active | 4 |
| Conviction | Anyone Can Trade | Active | 3 |
| Costream | Indexing human dialogue through digital products | Active | 8 |
| Cyberdesk | Self learning computer use agent for developers | Active | 2 |
| Datafruit | The AI workspace for software implementations | Active | 2 |
| Dedalus Labs | Persistent computers for AI agents | Active | 8 |
| DeepAware AI (Robotics Center of Silicon Valley) | Robots, parts & RL envs & evals - delivered in 48 hrs / pickup in SF. | Active | 4 |
| DeepGrove | Frontier Intelligence. On Any Device. | Active | 3 |
| Design Arena | World's largest crowdsourced benchmark for AI-generated design | Active | 3 |
| Doe | The boring stuff, handled. Everything else, supercharged. | Active | 2 |
| Duranium | Reshoring critical metal production | Active | 12 |
| EffiGov | The AI OS for Cities | Active | 3 |
| Embedder | Autonomous Firmware Engineer | Active | 6 |
| Epicenter | ChatGPT's memory feature in an open, portable format | Active | 1 |
| F2 | The AI platform for private markets investors | Active | 15 |
| F4 Industries | The GD&T Analysis Platform for Engineering Drawings | Active | 5 |
| Finto | AI accounting for enterprise finance teams | Active | 10 |
| Flai | We Bring Customers to Your Dealership | Active | 40 |
| Fleetline | Optimizing fleet planning with data driven algorithms | Active | 11 |
| Floot | The app platform inside Claude and ChatGPT. | Active | 4 |
| Flywheel AI | Waymo for excavators | Active | 2 |
| Freya | Voice AI for Enterprises | Active | 14 |
| Frizzle | AI Grading for Teachers | Active | 2 |
| Fulcrum | The agentic debugger for AI systems | Active | 2 |
| GETASAP | AI-Native Fresh Produce Logistics | Active | 30 |
| GhostEye | Your always-on red team. | Active | 6 |
| Golpo | Create Whiteboard Explainer Videos with AI from a Prompt or Document | Active | 7 |
| Halluminate | Data and RL environments to automate knowledge work | Active | 5 |
| Hera | The AI-native creative canvas | Active | 5 |
| Humoniq | Airline customer service, fully automated. | Active | 5 |
| idler | Hill-climb any benchmark, for any model, in any domain. | Active | 12 |
| Imprezia | The World's First AI Ad Network. | Active | 4 |
| Interfere | Give engineering, product, and design teams insight into unseen issues | Active | 8 |
| Iron Grid | AI-Native Data Center Engineering | Active | 2 |
| IronLedger.ai | AI-enabled Corporate Cards and Invoice Processing for Real Estate | Active | — |
| Janet AI | Agents that learn your company and work 24/7 | Active | 5 |
| Juxta | Building a GPS alternative 100x more powerful with no hardware needed. | Active | — |
| Kalinda | Deep research for class action law firms | Active | 2 |
| KERNEL | Crazy fast, open source infra for AI agents to use the Internet | Active | 22 |
| Kestroll | AI video editor | Active | 2 |
| Knowlify | Done-for-you AI video paid ads and Meta campaign management | Active | 6 |
| Lanesurf | Book any load in 10 minutes | Active | 14 |
| Lark | The E2E testing layer for AI-driven development | Active | 5 |
| Lilac | We sell GPUs. | Active | 4 |
| Liva AI | Building socially intelligent AI | Active | 6 |
| LLM Stats | Independent AI evaluations lab | Active | 2 |
| Locata | AI Referral Automation for Primary Care Clinics | Active | 4 |
| Lotas | AI for quantitative trading | Active | 2 |
| Luminal | Making AI run fast on any hardware. | Active | 7 |
| Magnetic | AI Tax Preparer for CPA firms | Active | 10 |
| Magnitude | Run open models as fast as your hardware allows | Active | 2 |
| MangoDesk | Long-horizon RL environments | Active | 2 |
| Manufact | Cloud infrastructure for MCP servers and Claude / ChatGPT plugins. | Active | 5 |
| Maximal | Truckload Planning at Machine Precision | Active | 3 |
| Meteor | We provide hedge funds with information they can trade on | Active | 2 |
| Meteor Labs | We provide hedge funds with information they can trade on | Active | 2 |
| Mimos | The growth OS for plaintiff-side law firms | Active | 2 |
| Minimal AI | AI Agents for E-commerce Customer Support | Active | 3 |
| Modelence | Production infrastructure on autopilot | Active | 3 |
| Monarcha | Turn maps into data | Active | 2 |
| Monte | Specialized Models for Agents | Active | 2 |
| Motives | Consumer focus groups run by AI | Active | — |
| Munify | The Cross-Border Neobank for the Middle East | Active | 4 |
| Nautilus | AI platform to grow and to optimize car washes | Active | 7 |
| Nixo | Make every FDE on your team capable of moving any account forward. | Active | 6 |
| Normal | Applied research lab for hardware design | Active | 4 |
| NOSO LABS | AGI for home service | Active | 6 |
| Notte | Browser infra for AI agents: sessions, auth, proxies, payments | Active | 5 |
| Novaflow | The AI data analyst for biology labs | Active | 4 |
| Nox Metals | Supplying America's Industrial Base | Active | 52 |
| Nozomio | creators of folk.com | Active | 4 |
| Okibi | Turns products into CLIs and agents into customers | Active | 2 |
| Omnara | The Open-Source Alternative to Claude Managed Agents | Active | 4 |
| OnDeck AI | Analyze any footage, without training a model | Active | 6 |
| OneStop | The local internet for NYC. | Active | 2 |
| Orange Slice | Agentic sales enrichment spreadsheet | Active | 2 |
| Pally | Your personal AI Assistant | Active | 2 |
| Paloma | AI-native custom software + data analytics for real economy operations | Active | 3 |
| Panels | Audio Data for AI Labs | Active | 1 |
| Pangolin | Open networking and security for your workforce, AI agents, and infra | Active | 3 |
| Panoptive | Agent systems for clinical development work | Active | 2 |
| PARES AI | AI-native real estate services firm | Active | 3 |
| Perseus Defense | America's Golden Dome for Drones | Active | 3 |
| Perspectives Health | AI to run behavioral health programs better | Active | 5 |
| Phases | AI for the physical world | Active | 3 |
| Physical Turing | Next generation robot deployer | Active | 2 |
| Pingo | Your personal AI for language learning | Active | 4 |
| Playgent | Sandboxes for AI agents | Active | 2 |
| Pleom | Agentic Business Intelligence | Active | — |
| Preseen | The AI forecasting company for global macro events. | Active | 1 |
| ProcIndex | AI-powered accounting automation for construction and manufacturing | Active | 4 |
| Proliferate | Do your life's work with agents | Active | — |
| Quotain | AI sales roleplay built from your real deals | Active | 2 |
| Reacher | We automate creator marketing for the world's largest brands | Active | 10 |
| RealRoots | IRL friendship app for women | Active | 7 |
| Rebulk | AI-native software for managing rail and bulk operations. | Active | 3 |
| Relling | deploying the first billion robots for manufacturing | Active | — |
| Risely AI | AI agents that automate administrative work across college campuses. | Active | 8 |
| Riverbank | Infrastructure Cartography | Active | 1 |
| RowFlow | Replacing forms with AI conversations | Active | 2 |
| Ruvo | The Global Dollar App for Brazil | Active | 11 |
| Sapien | Synthetic populations for decisions | Active | 2 |
| Serafis | Deep intelligence for private markets | Active | 4 |
| Shor | International payroll, built for founders | Active | 4 |
| SigmanticAI | The Cursor for Chip Design - Delivering Silicon-Ready Chip Designs… | Active | 2 |
| Sira | AI Native Rippling for Deskless Workers | Active | 4 |
| Slashy | Cursor for Email | Active | 3 |
| Socratix AI | AI coworkers for fraud and compliance teams. | Active | 5 |
| Solva | Building the new superintelligence for insurance | Active | 7 |
| Spotlight Realty | AI powered brokerage reducing residential rental commissions in NYC… | Active | 4 |
| stagewise | The makers of Klex Bots, your own team of digital coworkers. | Active | 3 |
| Stellon Labs | Building tiny frontier AI models that run on edge devices | Active | 2 |
| Stockline | AI-native ERP for food wholesalers | Active | 2 |
| Stormy | Stormy runs the office so your crew can run the work. | Active | 5 |
| Synthetic Society | Synthetic Videos to Power Marketing | Active | 2 |
| Tesora | Frontier AI for Actuaries | Active | 5 |
| The Prompting Company | We help products get discovered & used by AI agents. | Active | 7 |
| Theora | Building medical school for AI Agents | Active | 3 |
| Topological | Physics-based foundation models for CAD optimization. | Active | 2 |
| Trace | Context-aware orchestration between humans and AI. | Active | 3 |
| TraceRoot.AI | The open-source platform that continuously improves your ai agents | Active | 4 |
| truthsystems | Automatically blocking risky behavior with real-time governance agents | Active | 6 |
| TwentyTwo | AI infrastructure for biosecurity | Active | 3 |
| Uplift AI | Foundational Voice Models for regional languages | Active | 3 |
| Veritus | AI agents for the consumer lending industry | Active | 10 |
| Verne Robotics | AI models that teach robots new skills in hours | Active | 8 |
| VibeFlow | AI content manager that grows your company's online presence | Active | 3 |
| Vulcan Technologies | Secure frontier AI for government & adjacent knowledge work | Active | 17 |
| Wafer | AI that makes AI fast | Active | 21 |
| Wayline | AI voice for property managers | Active | 5 |
| Wedge | AI Employees for Healthcare | Active | 2 |
| Metis | Infrastructure to build reliable agents | Acquired | 13 |
| Nexa Labs | Implantable microchips and AI for cattle monitoring | Acquired | 3 |
| Opennote | The notebook that thinks with you. | Acquired | 3 |
| Acrely | Enterprise Voice Agents | Inactive | 6 |
| Closera | AI Shopping Agent for Your Ecommerce Store | Inactive | 2 |
| Nuntius | Making Models Follow Rules. | Inactive | 2 |
| TectoAI | A Platform for AI Governance | Inactive | 2 |
How this is measured
Measured 2026-11-10 from Y Combinator's company directory. Team size is the number YC lists for the company, where it lists one. Survival here means listed Active; Acquired and Public are shown separately because YC's listing does not say whether an acquisition was a good outcome.
All batchesShut-down companies
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