Companies274
Active73%
Acquired or public12%
Inactive14%
Y Combinator's directory lists 274 companies in the Winter 2023 batch: 201 Active, 34 Acquired, 0 Public and 39 Inactive. 14% of Winter 2023 is listed Inactive, against 23% across YC batches at least two years old, so more of this batch is still going than in most.
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.
Every company in Winter 2023
| Company | What they do | Status | Team |
|---|---|---|---|
| 1stCollab | Performance-Optimized Influencer Marketing at Scale | Active | 11 |
| 222 | the AI social facilitator for offline human to human interactions | Active | 23 |
| Adri AI | Your AI Partner for SAP Development | Active | 3 |
| Adventris Pharmaceuticals | Adventris makes cancer vaccines | Active | 7 |
| Alaan | Ai-native finance platform for the Middle East | Active | 250 |
| Alloy | AI prototyping tool for product managers | Active | 5 |
| Alphawatch AI | Relationship Coverage for Deal Teams | Active | 8 |
| Aqueduct | Create, edit, and share procedural material graphs. | Active | 1 |
| Ariglad | Knowledge base maintenance on auto-pilot | Active | 4 |
| Atmeto | Building a frontier world model for power | Active | 2 |
| Automat | Agentic automation that understands context, recovers, and improves. | Active | — |
| Avoca | AI-powered Sales Agent for Service-Based Industries | Active | 85 |
| Backdrop | AI coworkers for running projects and operations | Active | 2 |
| Benchmark | Decision infrastructure for investment firms | Active | 7 |
| Berry | Scale customer success and onboarding with AI | Active | 8 |
| Bluedot | Bluedot is a single payment platform for EV drivers and fleets. | Active | 15 |
| Boundary | The programming language for AI | Active | 10 |
| BuildJet | High-performance computing cloud | Active | 2 |
| Bujeti | The Finance Control Centre for African Businesses | Active | 35 |
| Chart | Realtime Access to Verified Tax Records | Active | 3 |
| Chima | Building infrastructure tools to help large companies customize their… | Active | 7 |
| Clad | Project management software for building infrastructure. | Active | 7 |
| Clearspace | Less screen time, more life. | Active | 7 |
| ClickPe | Finance on a Click | Active | 2 |
| Cloudchipr | The #1 Actionable FinOps Platform | Active | 25 |
| Clueso | Create beautiful videos & docs for any product or process in minutes | Active | 25 |
| co.dev | Turn your ideas into full-stack apps | Active | 2 |
| coil inc. | ai | Active | 1 |
| Coldreach | Find the best leads with custom intent signals | Active | 3 |
| CombineHealth | Automating Healthcare Revenue Cycle Management with AI Workforce | Active | 15 |
| Common Paper | The SAFE for commercial contracts | Active | 8 |
| compliant-llm | Detect every data leak into third-party GenAI tools | Active | 3 |
| Concourse | The AI Agent platform for finance | Active | 15 |
| Conduit | The operating system for shipping and receiving. | Active | 15 |
| Constant | AI Analysts for the Buy-Side | Active | 2 |
| Coperniq | Workflow software for solar & energy contractors ☀️😎 | Active | 6 |
| Corgi Labs | AI to increase payment acceptance and reduce fraud for businesses | Active | 3 |
| Cosine | Fully Agentic SWE | Active | 12 |
| Credal.ai | The Control Plane for Enterprise Agents | Active | 14 |
| Dataglade | The smart way to research stocks. | Active | 2 |
| DataSuite | Dataset Management for AI Trainers | Active | 4 |
| Decohere | Real-time generative AI | Active | 4 |
| Depot | Software delivery built for machine scale. | Active | 22 |
| Designbase | Design and build great interfaces | Active | 3 |
| Diffuse Bio | Generative AI for protein design | Active | 10 |
| Dill | Dill helps construction suppliers automate accounts receivable,… | Active | — |
| Double – Coding Copilot | AI coding copilot engineered for performance | Active | 2 |
| DrDroid | Your best friend in production. | Active | 8 |
| Dream3D | We build tools to help humanity predict the future. | Active | 3 |
| Edge | The ultimate IP assistant. | Active | 2 |
| Epsilon | AI Search Engine for Academic Research | Active | 2 |
| Escape | Offensive security for the teams that are 100x outnumbered | Active | 29 |
| Extend | Production-ready document processing | Active | 25 |
| FactIQ | Investment research data for AI agents | Active | 3 |
| Fastgen | Webflow for the Backend | Active | 7 |
| Finic | The AI fraud hunter | Active | 4 |
| Finn | AI Wealth Manager | Active | 5 |
| Finni Health | Empowering Autism Care Providers to Go Independent | Active | 40 |
| Finta | Magically simplify accounting and taxes | Active | 2 |
| FlexDesk | AI Agents for corporate real estate teams | Active | 8 |
| FlexWash | The operating system for the car wash industry. | Active | 2 |
| Flower | Train AI on distributed data | Active | 20 |
| Floworks | Hire the best AI Sales employees | AI SDR | AI RevOps | AI EA | Active | 20 |
| Fluid Markets | Invest in public companies KPIs | Active | 3 |
| Frigade | AI-powered product assistance for modern software teams | Active | 4 |
| Glass Health | AI-Powered Clinical Decision Support & Ambient Scribing | Active | 7 |
| Gooseworks | Self-Improving Ad Creative Engines | Active | 5 |
| GovEagle | AI for Government Contractors | Active | 25 |
| Hadrius | Automating Securities Compliance | Active | 80 |
| Hammr | Rippling for the Construction Industry | Active | 10 |
| Haven | AI workforce for property management | Active | 3 |
| Helios | Create your AI workforce | Active | 3 |
| Hindsight | Deal Intelligence and Sales Coaching Platform | Active | 3 |
| Hippo Scribe | AI assisted documentation for PT/OT/SLP | Active | 2 |
| Hona | Personal Injury Legal Work - Automated | Active | 32 |
| Honeydew | The home for shared data logic | Active | 6 |
| IcePanel | Design and explain complex software architecture. | Active | 9 |
| inBuild | Workflow Automation for Construction Finance | Active | 12 |
| Infinia | Move money programmatically - built for developers | Active | 28 |
| Infisical | Unified platform for secrets, certs, and privileged access management | Active | 50 |
| infra.new | AI Agent for Cloud Infrastructure | Active | 3 |
| Inkeep | Build AI Agent teammates and automations in code or no-code | Active | 18 |
| Invitris | Creating new protein-based drugs at scale | Active | 6 |
| Invopop | We help global software companies comply with local tax reporting | Active | 7 |
| Kivo Health | AI-powered care for seniors with chronic disease | Active | 40 |
| Koywe | Crypto On and Off Ramp for Latam | Active | 7 |
| Kyber | Instantly draft, review, and send complex regulatory notices. | Active | 5 |
| Laminate | Active | — | |
| Latent | Medical language models to automate healthcare operations | Active | 50 |
| Lightski | Transform Document Workflows with AI Agents | Active | 1 |
| LinkGrep | AI browser copilot for teams | Active | 2 |
| Linum | type text, dream video | Active | 2 |
| LiteLLM | Call every LLM API like it's OpenAI [100+ LLMs] | Active | 20 |
| Littio | Dollar banking for people in Latin America | Active | 37 |
| loopfour | Workflow automation, without AI hallucinations. | Active | 20 |
| Loula | Enabling birth & postpartum doulas to easily accept insurance. | Active | 7 |
| Magic Patterns | Go from idea to production with AI. | Active | 10 |
| MagnaPlay | AI-powered game translation. | Active | 5 |
| Mantys | AI agents for healthcare and insurance operations in GCC | Active | 10 |
| Matano | Cloud Native SIEM (alternative to Splunk/Elastic) | Active | 2 |
| Maxi | AI Agent for your personal finances | Active | 2 |
| Mercoa | AI Agent for Billpay platforms to pay invoices with virtual cards | Active | 2 |
| Metal | Metal is an AI-driven operating system for fundraising | Active | 21 |
| Metal | The AI context platform for private capital. Everything your firm… | Active | 17 |
| Middleware | AI-based full stack observability platform | Active | 40 |
| Milio | B2B-2C real-time account to account payments | Active | 16 |
| Miracle | Accelerate clinical trials with real-time, actionable insights | Active | 7 |
| Modulari-T | We teach your immune system to attack and cure cancer | Active | 4 |
| Nango | A single API for all your integrations | Active | 6 |
| Narrative | AI agents for end-to-end testing | Active | 5 |
| Novelcare | Empowering every doctor and every patient to participate in research | Active | 5 |
| Noya Software | Product design tool that lets everyone design like a designer | Active | 2 |
| Numeral | The AI-native sales tax solution. | Active | 110 |
| nunu.ai | Building the first multimodal agents to play and test games. | Active | 5 |
| Odigos Technologies Inc. | Enterprise-Grade OpenTelemetry | Active | 16 |
| Ohm | Ohm helps engineering teams accelerate hardware development & testing. | Active | 6 |
| Omnistrate | Transform any software to multi-cloud SaaS in minutes not years | Active | 15 |
| OneText | Frictionless payments via SMS | Active | 6 |
| Onshore | AI for corporate tax | Active | 60 |
| Orchid | AI-powered EHR for independent mental health professionals | Active | 4 |
| Overlord | AI Accountability Partner | Active | 2 |
| Pair AI | Reimagining education with short form video and AI | Active | 2 |
| Palomma | AI & financial services for real estate in LatAm, starting by rent | Active | 8 |
| Pando Bioscience | Gen-AI Designed Enzymes for Pharmaceutical Innovation | Active | 5 |
| Persist AI | Developing long-lasting drug formulations 50% faster | Active | 6 |
| Pier | Stripe for Credit - Trusted Credit Compliance Partner | Active | 4 |
| Pierre | Pierre is a new, opinionated, git platform. | Active | 10 |
| Pigeon | AI-powered document automation: collect, review, extract, and sync. | Active | 5 |
| Pirros | AI Platform for Architects and Engineers | Active | 44 |
| Pledge Health | AI RCM assistant that handles any insurance task on payer portals for… | Active | 2 |
| Plutis | Active | 2 | |
| PoloTab | Restaurant software that actually works | Active | 18 |
| PoplarML | Deploy Machine Learning Models with One Command | Active | 2 |
| Portalform | Build and host internal tools | Active | 4 |
| Proglix | B2B Marketplace for Steel Raw Materials | Active | 25 |
| Propexo | Plaid for Commercial Real Estate | Active | 6 |
| Pylon | The Agentic Support Platform purpose-built for B2B. | Active | 120 |
| Radical | Building persistent, high-performance infrastructure in the sky | Active | 6 |
| Reflex | The operating system for building mission-critical enterprise apps. | Active | 10 |
| Relace | Models and infra for coding agents | Active | 7 |
| Repacket | Employee security done for you. | Active | 4 |
| Resend | Email for developers | Active | 45 |
| Retape | AI Operating System for Debt Settlement | Active | 3 |
| rex.fit | Automating nutrition tracking. | Active | 2 |
| Rivet | Rivet Actors are the primitive for stateful workloads | Active | 5 |
| Rollstack | Automate data-driven slide decks and documents with AI | Active | 30 |
| Rubbrband | A new kind of creative company. | Active | 10 |
| Ruby Card | Neobank for e-commerce businesses | Active | 3 |
| RUUF | Managed marketplace for solar in Latam | Active | 60 |
| Sage AI | Your self-generating, self-maintaining code knowledge base. | Active | 2 |
| Salient | AI Servicing for Auto Lenders | Active | 40 |
| Sameday | The leading AI workforce for the trades. | Active | 7 |
| Sanvivo | Shopify for pharmacies in Europe | Active | 4 |
| Scanbase | The API for Diagnostic Test Analysis (COVID-19, FLU, RSV, STD,… | Active | 10 |
| Scout | Scout is an AI news aggregator that turns your role, industry, and… | Active | 3 |
| Shekel Mobility | B2B marketplace for Auto Dealers in Africa | Active | 18 |
| Sherloq | One place for all your queries, directly on your SQL editor | Active | 6 |
| Shortbread | Read romance comics. | Active | 4 |
| ShortLoop | Phone AI that Captures Every Dealership Revenue Opportunity | Active | 8 |
| Sirdab | Cloud warehousing & supply chain platform in MENA | Active | — |
| Skyhook | PaaS-like experience with the power of Kubernetes, on your cloud | Active | 7 |
| SpecCheck | Unifying how the optical industry does business. | Active | 5 |
| Speedy Labs | Maximize profits with AI-powered rebate management. | Active | 8 |
| Storyboarder | Tool and platform to create and sell webcomics | Active | 2 |
| Stralis Aircraft | Emission free hydrogen electric aircraft | Active | 4 |
| Suger | Salesforce for Cloud marketplaces on AWS, Azure, GCP | Active | 50 |
| SuperAPI | Programmable API gateway that makes APIs cacheable | Active | 2 |
| SuperKalam | AI-Powered Super Mentor for Test Prep | Active | 20 |
| Syncly | Social listening for the video era | Active | 15 |
| TableFlow | AI Teammates for Data Tasks | Active | 2 |
| Tagsafe | Active | — | |
| Teclada | Remote Shell Access in the Browser | Active | — |
| Tennr | Fast, Transparent Patient Experiences | Active | 205 |
| Texel.ai | Run AI pipelines 10x faster | Active | 2 |
| Theya | The world's simplest Bitcoin self-custody solution | Active | 3 |
| Trackstar | Plaid for supply chain logistics | Active | 7 |
| Trigger.dev | Build and deploy fully‑managed AI agents and workflows | Active | 9 |
| Truewind | AI-Powered Accounting | Active | 30 |
| Type | AI-native storytelling studio. | Active | 5 |
| Unify | Models that keep learning | Active | 4 |
| Univerbal | Language learning with a conversational AI Tutor | Active | 3 |
| Unstatiq | Single source of truth for your clinic's finances and supply chain. | Active | 2 |
| Untether Labs | Scheduling software for digital health clinics to do more with less. | Active | 6 |
| Vaero | AI for Human Writing | Active | 1 |
| Variance | AI Agents for Fraud Review and Investigations | Active | 12 |
| Vector | Advertising for the new internet | Active | 20 |
| Vellum | Active | 23 | |
| Velos | Platform to automate manual back-office work | Active | 3 |
| Vendah | Vendah is building a Faire-style marketplace for LATAM’s +50M… | Active | 8 |
| Vendora | All-in-One Software for the $1T Grocery Industry | Active | 4 |
| Verata | Network Intelligence for Investors | Active | 2 |
| Versive | AI-first user research platform | Active | 3 |
| Vitalize | Transforming how health systems optimize labor | Active | 28 |
| Vooma | Automation platform for logistics | Active | 40 |
| Wallbit | Neobank for global remote workers | Active | 17 |
| Warp | AI-native Employee Management Platform for High-Growth Companies | Active | 80 |
| Waza | B2B payments platform for emerging markets. | Active | 28 |
| Wild Moose | Automating root cause analysis with generative AI | Active | 3 |
| Yuma AI | The AI Support Agent for Ecommerce | Active | 26 |
| ZeroDev | Account abstraction wallets as a service | Active | 5 |
| zudo.work | AI Workers for Warranty | Active | 3 |
| Arroyo | Cloud-native stream processing | Acquired | 2 |
| Bluebirds | Automate outbound with signals | Acquired | 6 |
| Booth AI | Generative AI Photographer for E-Commerce | Acquired | 3 |
| Brewit | Conversational data analytics for every team | Acquired | 4 |
| Cardinal | Your AI product backlog | Acquired | 3 |
| Cobblestone | Delinquency reduction and automation software for institutional… | Acquired | 3 |
| DAGWorks Inc. | Open source tools & services for reliable AI Agents & AI Applications | Acquired | 2 |
| Dashdive | Break down AI and cloud costs by feature and customer | Acquired | 2 |
| EdgeBit | Autofix your software dependencies | Acquired | 5 |
| EzDubs | Real-time speech translation | Acquired | 6 |
| Fairway Health | AI Co-Pilot for Health Insurers to Authorize Treatment Faster | Acquired | 3 |
| Fern | Instantly offer SDKs and API Docs | Acquired | 30 |
| Fintool | Financial copilot for institutional investors | Acquired | 6 |
| Helicone | LLM Observability for Developers | Acquired | 5 |
| highlight.io | The open source, fullstack monitoring platform: stop guessing why… | Acquired | 8 |
| Keep | The open-source AIOps platform | Acquired | 5 |
| Langfuse | Open source LLM engineering platform | Acquired | 19 |
| Lume | Speed up customer implementation with AI | Acquired | 5 |
| Muffin Data | Modern analytics for CPG brands | Acquired | 2 |
| Mulligan | AI automation for insurance brokerages | Acquired | 5 |
| No Cap | AI startup investor, No Cap | Acquired | 5 |
| OfOne | AI-powered order taker for restaurant drive-thrus | Acquired | 5 |
| OpenInt | Open Source Embedded Product Integrations | Acquired | 4 |
| OpenMeter | Usage Metering, AI & API Monetization | Acquired | 7 |
| Outerbase | The interface for your database | Acquired | 4 |
| Persana AI | Sales Agents with 100+ data sources to close more deals | Acquired | 2 |
| PlayAI | Our mission is to make Voice AI accessible and useful to all. | Acquired | 35 |
| Rally Tax | AI-native tax platform to save $1T+ for Americans | Acquired | 5 |
| StackAI | The Enterprise AI Transformation Platform | Acquired | 62 |
| Traceloop | Know what your LLM is doing — and why it’s failing | Acquired | 9 |
| Trigo | Rent verification API for landlords and lenders | Acquired | 4 |
| Versori | Agentic integrations & automations for enterprise | Acquired | 16 |
| Viddy | A new way to create landing pages that is video-native. | Acquired | 2 |
| Vocode | Open source Voice AI | Acquired | 3 |
| Blyss | End-to-end encrypted AI. | Inactive | 2 |
| Cakework | API that adds cloud hosting to any developer platform | Inactive | 2 |
| Choppy! | FAST FLAVORFUL PROTEIN | Inactive | 2 |
| CodeParrot AI | Helps Developers build stunning UI Lightning Fast ⚡️ | Inactive | 2 |
| CreatorML | Foundation Model for Human Attention | Inactive | 6 |
| Defer | Zero infrastructure background processing platform. | Inactive | 2 |
| Demospace | Inactive | 2 | |
| Echo | Founder-led sales co-pilot for B2B startups. | Inactive | 3 |
| Fabius | AI to improve Sales Calls | Inactive | 2 |
| Fetchr | The Personal Shopper in Your Pocket | Inactive | 4 |
| Gluetrail | Create step by step articles with screenshots and videos 10x faster | Inactive | 2 |
| GoodCourse | The TikTok style corporate training platform | Inactive | 8 |
| Homeflow | Simplifying insurance for large real estate investors | Inactive | 4 |
| Indexical | AI-powered data extraction engine | Inactive | 2 |
| Interlock | We are still in stealth mode. | Inactive | 2 |
| Lavo Life Sciences | AI for drug formulation | Inactive | 3 |
| Layup | Guide your users. Right in your product. | Inactive | 3 |
| Luca | The Modern Pricing Engine for Retail | Inactive | 6 |
| Lynx | AI platform for investigating and resolving engineering incidents | Inactive | 5 |
| Magicflow 𐂂 | The Gen AI evaluation and curation platform | Inactive | 2 |
| Mogara | Automatic software R&D capitalization | Inactive | 2 |
| moonrepo | Open source build tool for monorepos and large codebases | Inactive | 2 |
| Neptyne | The programmable spreadsheet. | Inactive | 4 |
| OpenSight | AI-powered customer support automation for fast-growing companies | Inactive | 3 |
| OutSail Technologies | Revolutionary, Modern Wing Sails | Inactive | 3 |
| Overflux | Streamline EV charger installations for real estate developers | Inactive | 2 |
| Paperplane | Credit risk management platform for builders' merchants | Inactive | 5 |
| Parabolic | AI assistant for customer support | Inactive | 2 |
| Peeba | Risk-free wholesale for retailers across Southeast Asia | Inactive | 30 |
| Rainmaker | DeFi for Everyone | Inactive | 2 |
| rift | B2B lead routing made simple | Inactive | 2 |
| Rubber Ducky Labs | AI Powered Product Discovery | Inactive | 2 |
| Second | AI-Native Enterprise Codebase Maintenance | Inactive | 3 |
| SensorSurf | Resolve PR check failures instantly with AI | Inactive | 1 |
| Serial | Root cause manufacturing issues in seconds | Inactive | 2 |
| Sorted | Instant SaaS management | Inactive | 2 |
| Struct | Multi-lingual AI Voice Agents | Inactive | 3 |
| Turntable | AI-native operating system for analytics teams | Inactive | 3 |
| Upfront | A personal assistant for every homeowner | Inactive | 4 |
How this is measured
Measured 2026-09-26 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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