Companies248
Active85%
Acquired or public5%
Inactive10%
Y Combinator's directory lists 248 companies in the Winter 2024 batch: 211 Active, 13 Acquired, 0 Public and 24 Inactive. 10% of Winter 2024 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 2024
| Company | What they do | Status | Team |
|---|---|---|---|
| Adapted | AI physical therapy for athletes | Active | 2 |
| Aftercare | Conversational AI surveys with intelligent follow-up questions | Active | 3 |
| Agentic Labs | AI system design tools for dev teams | Active | 2 |
| Aidy | Mobile app helping people better manage chronic health conditions | Active | 2 |
| Alai | Create high quality presentations quickly using AI | Active | 5 |
| Alex | Alex is the AI recruiter for hiring great people. | Active | 30 |
| Andon Labs | Autonomous organizations without humans in the loop | Active | 11 |
| Andy AI | Faster clinical documentation for home health nurses | Active | 5 |
| Aqua Voice | Frontier Voice Input - write 4x faster than typing. | Active | 5 |
| Argon AI, Inc. | AI for Pharma Intelligence | Active | 2 |
| Arini | AI receptionist for dentists | Active | 17 |
| Artisan | AI employees that take on real work, starting with sales | Active | 50 |
| Artos | Authoring documents for life sciences in minutes, not months. | Active | 7 |
| Astro Mechanica | Supersonics for the new Jet Age | Active | 52 |
| atopile | We make tools to design electronics circuit boards with code | Active | 5 |
| Attunement | Attunement turns fragmented behavioral health records into structured… | Active | 3 |
| AveryIQ | AI Copilot for Property Managers and Landlords | Active | 3 |
| Basalt | Constellations as a Service | Active | 10 |
| Basepilot | AI agents for insurance claims | Active | 2 |
| BetterBasket | Smart grocery pricing with AI | Active | 5 |
| Bilanc | AI-Powered Engineering Productivity | Active | 3 |
| BiteSight | The video-first food delivery app. Imagine TikTok meets DoorDash. | Active | 4 |
| Blacksmith | The fastest way to run your GitHub Actions | Active | 3 |
| Brainbase Labs | The AI Labor Company | Active | 4 |
| Breez Labs | Helping Companies Deploy Email Agents in High Trust Domains | Active | 2 |
| camelAI | Unlimited inference at $5 per stream | Active | 3 |
| Carma | The AI Operating System For Modern Fleets. | Active | 15 |
| Carousel Technologies | AI Assistant for Excel | Active | 4 |
| Centauri AI | Helps teams work effectively with AI coding agents. | Active | 5 |
| Centralize | The relationship intelligence platform for enterprise revenue | Active | 9 |
| Circleback | AI-powered meeting notes and automations | Active | 8 |
| Clarion | The AI communication layer for healthcare | Active | 16 |
| Clarum | AI agents for private market diligence, monitoring, and reporting | Active | 2 |
| Cleva | Global neobank for emerging markets | Active | 30 |
| CloudCruise | The developer platform for fast and reliable browser agents | Active | 7 |
| CoCrafter | B2B construction marketplace to match contractors and subcontractors. | Active | 9 |
| CodeAnt AI | Autonomous offensive and defensive cybersecurity platform | Active | 25 |
| CommodityAI | The AI operating system for commodity operations | Active | 6 |
| Conduit | AI Agents for Hospitality | Active | 15 |
| Copper Health | Modern patient engagement and remote therapeutic monitoring platform | Active | 2 |
| Cora | AI Fitness Coach | Active | 3 |
| CrowdVolt | The integration layer for live events infrastructure | Active | 12 |
| Datacurve | Frontier coding data for training and evaluating LLMs | Active | 4 |
| Decipher AI | QA agents that write tests 10x faster with zero maintenance | Active | 4 |
| Deep24 | AI coach for your entire life | Active | 2 |
| Deepnight | Building The Next Generation of Night Vision Devices | Active | 16 |
| Diana | Give Your Employee An Employee | Active | 7 |
| Dime | Dime automates administrative busywork at healthcare clinics | Active | 3 |
| Downlink | Make your LLMs 3x faster. | Active | 1 |
| Draftaid | Go from 3D models to CAD drawings using AI | Active | 14 |
| Dragoneye | Custom video detection models in less than 5 minutes | Active | 2 |
| Driver | Context for Codebases | Active | 15 |
| Dropback | The front office software suite for college sports | Active | 2 |
| DryMerge | AI that updates your CRM for you | Active | 4 |
| Duckie | Build AI Support Agents in Minutes | Active | 4 |
| Ecliptor | AI and Embeddings. | Active | 2 |
| EdgeTrace | Describe It. Find It. Act On It. | Active | 2 |
| Eggnog | Fun with AI video | Active | 1 |
| ego | AI applied research lab building synthetic sapience; human-like AI | Active | 9 |
| Ellipsis | Cloud platform for coding agents | Active | 2 |
| Elodin | Unified flight software and hardware for the mission of tomorrow | Active | 5 |
| Eris Biotech | Our drugs engage the immune system to fight tumors | Active | 2 |
| Event Horizon Labs | AI research lab automating all of investing | Active | 10 |
| Feldy | Field-First AI for home services | Active | 8 |
| Firebender | Most powerful coding agent for Android engineers | Active | 1 |
| floatingpoint | Datasets and evals to push the frontier of visual intelligence. | Active | — |
| Fluently | Speaking coach for non-native English professionals | Active | 2 |
| Focal | AI video creation tool for TV shows and movies | Active | 2 |
| Forge | AI native freight forwarder and customs broker | Active | 7 |
| Forge Rewards | Starbucks app for restaurants | Active | 5 |
| Fractal Labs | Active | 4 | |
| FurtherAI | AI Workforce for the Insurance Industry | Active | 36 |
| Garage | Marketplace for America's most essential assets | Active | 35 |
| GetCrux | AI Creative Strategist | Active | 9 |
| Givefront | Nonprofit Financial Management | Active | 6 |
| GloGlo | Curing and preventing type 1 diabetes | Active | 3 |
| GovernGPT | The RFP Platform Asset Managers Adopt | Active | 7 |
| Granza Bio | Building programmable therapeutics for the immune system | Active | 8 |
| Greenboard | Modern OS for the financial back office. | Active | 35 |
| Greptile | AI code review agent with complete context of your codebase | Active | 35 |
| Guide Labs | Frontier models and agents you can learn from, audit, and steer. | Active | 6 |
| Gumloop | The multiplayer AI agent builder. Let anyone build, IT controls access | Active | 44 |
| Haplotype Labs | Personalized prevention using genetics and AI | Active | 1 |
| Happenstance | People search powered by AI | Active | 3 |
| Hatchet | The orchestration platform for teams who ship. | Active | 7 |
| Hazel | AI-enabled procurement for government | Active | 7 |
| Healia | Modern health insurance for dual income families | Active | 15 |
| HeartByte | GenAI Interactive story. Creator write fictions 10x faster. | Active | 2 |
| Indemni | Cargo Theft and Fraud Prevention Platform | Active | 7 |
| Infinity | Business banking for cross-border SMBs & Startups | Active | 15 |
| InQuery | Intelligent Medical Record Reviews | Active | 4 |
| InspectMind AI | AI agent for construction drawings review | Active | 2 |
| Integuru | Generate fast, reliable APIs for any platform | Active | 5 |
| ion design | AI Website platform that grows revenue automatically | Active | 3 |
| Junction Bioscience | AI Hypothesis Engine for Molecular Discovery | Active | — |
| JustAI | Agentic Marketing Platform | Active | 4 |
| Kabilah | Agentic AI for Nursing Workflows | Active | — |
| kater.ai | Deliver complete data analysis from a single question | Active | 3 |
| Keystroke | An all-in-one platform for building internal agents & workflows | Active | 4 |
| Latted | A Unified Editor For AI Video | Active | 2 |
| Leaping | Automate bug resolution | Active | 2 |
| Legora | The AI workspace for lawyers | Active | 400 |
| LemonSlice | Give your voice agents a face | Active | 8 |
| Magic Hour | AI media creation platform for creators and developers | Active | 2 |
| Maia | AI relationship app that keeps couples together | Active | 2 |
| malibou | the first all-in-one payroll and HR software for French SMBs | Active | 2 |
| Manifold Freight | Aggregating Spot Freight Opportunities for Carriers | Active | 5 |
| Marblism | AI Employees who love overtime | Active | 5 |
| Marr Labs | AI-voice agents that are indistinguishable from humans. | Active | 9 |
| Mathos | Ultimate AI Math Problem Solver to Revolutionize Personalized Learning | Active | 5 |
| Meticulate | Making it easy for B2B sales teams to send stellar outbound | Active | 5 |
| Metofico | No Code Data Analysis for Life Science Research | Active | 2 |
| Miden | Card issuer processor and banking stack for businesses in Sub-… | Active | 19 |
| Million | Tools for agent verification | Active | 5 |
| Model ML | The AI for Financial Services. | Active | 180 |
| Momentic | The agentic quality platform for web and mobile | Active | 15 |
| Monumint | Conversational AI purpose-built for financial services | Active | 5 |
| NanoCorp | Autonomous Companies Run by AI Working While You Sleep. | Active | 1 |
| Navier AI | Agent-Driven Engineering | Active | 7 |
| nCompass Technologies | Optimize performance on GPUs - 10x faster | Active | 3 |
| Newton | AI-powered phone platform for dentists | Active | 4 |
| Nuanced | the AI coding app for thinking. | Active | 2 |
| Octolane AI | Revenue Superintelligence | Active | 4 |
| Ocular AI | Applied AI Data Research Lab Encoding Human Expertise into Machines… | Active | 8 |
| OddsView | The Bloomberg Terminal of Sports Betting | Active | 5 |
| OffDeal | AI-native investment bank for small businesses | Active | 15 |
| Oma Care | Get paid for taking care of your parents. | Active | 2 |
| OneGrep | AI Agent for DevOps Workflow Automation | Active | 2 |
| Open | Enterprise AI customer support | Active | 21 |
| Opencall | Practice admin run by AI | Active | 7 |
| OpenFoundry | The fastest developer experience for building on open source AI. | Active | 2 |
| Openmart | Local business data intelligence platform | Active | 6 |
| PandasAI | PandasAI is an open-source conversational data analysis platform with… | Active | 3 |
| Panelytic | Payment infrastructure for machines | Active | 2 |
| Paradigm | A reimagined workspace with AI at its core | Active | 8 |
| Parallel | AI agents for healthcare admin | Active | 15 |
| ParcelBio | Elevated mRNA for transformative medicines. | Active | 6 |
| PartnerHQ | A marketplace for B2B businesses to buy warm intros. | Active | 4 |
| Pazi | Platform where autonomous companies are built | Active | 7 |
| Penciled | AI front office assistant for physical therapy | Active | 2 |
| Piramidal | Foundation Model for the Brain | Active | 10 |
| Pivot Robotics | AI for Robot Arms in Factories | Active | 8 |
| PointOne | AI Time Platform for Law Firms | Active | 35 |
| Polar | The smarter way to manage USD earnings globally | Active | 2 |
| Polished | Generate ads. Iterate till perfect. | Active | — |
| Powder | AI Agents for precise document analysis | Active | 6 |
| Precip | High precision AI weather models | Active | 3 |
| Pretzel AI | AI tooling | Active | 2 |
| PromptArmor | LLM Security and Compliance | Active | — |
| ProSights | ProSights is a data / AI transformation partner to PE-backed portcos. | Active | 14 |
| Quivr | AI-powered auto-resolutions and reply suggestions for customer… | Active | 5 |
| Raindrop | Sentry for AI Agents | Active | 9 |
| Reducto | The complete agentic document platform | Active | 30 |
| Reform | AI Agents for high-stakes work. | Active | 13 |
| Relari | Building dexterous robots that learn from human biomechanics | Active | 2 |
| renderlet | Build interactive applications that run anywhere | Active | 2 |
| Reprompt | AI Agents for Location | Active | 3 |
| Respan | Self-driving observability, evals, and gateway for AI agents | Active | 23 |
| RetailReady | An AI-powered supply chain compliance engine | Active | 12 |
| Retell AI | Supercharge Your Contact Center Operations with AI Phone Agents | Active | 50 |
| Risotto | Risotto auto-solves IT support requests using AI | Active | 3 |
| ROE | AI for risk and compliance | Active | 9 |
| Rove | Travel the world for free. | Active | 4 |
| Ryse | The secondary market for real estate leases | Active | 13 |
| Saga AI | Voice Agents for Healthcare Operations | Active | 2 |
| Sagaland | AI entertainment platform | Active | 2 |
| Salvy | Mobile carrier for businesses in Brazil | Active | 27 |
| Scout | AI insights for consumer products | Active | 3 |
| Scritch | AI operating system for veterinary care | Active | — |
| Senso | Control what AI says about you | Active | 8 |
| Shepherd | Every student's personalized learning assistant | Active | 5 |
| Shiboleth | Shiboleth automates lending compliance for financial institutions… | Active | 5 |
| Silogy | An AI-powered test and debug platform for chip developers | Active | 3 |
| Solari AI | Gives non-technical team members agents that work right out of the box | Active | 1 |
| Sonia | Validated mental health support in your pocket, anytime. | Active | 7 |
| Spark | AI-powered workflows for energy infrastructure | Active | 5 |
| Stacksync | Real-time and two-way sync between CRMs and Databases | Active | 34 |
| Superagent | Security for AI-native developers | Active | 2 |
| SuretyNow | The Modern Surety Bond Platform | Active | 4 |
| sync. | AI lipsync tool for video content creators | Active | 13 |
| SynsoryBio | "If-then" conditional logic for protein drugs | Active | 2 |
| Tamarind Bio | AI Inference Platform for Drug Discovery | Active | 20 |
| Tekton Dynamics | AI control layer for welding robots | Active | 3 |
| Terrakotta | AI platform for phone-first sellers | Active | 5 |
| The New Money Company | Invoicing that pays you even if your buyer doesn’t | Active | 4 |
| Toma | AI for Underserved Industries | Active | 20 |
| Topo | All-in-one AI platform for outbound sales | Active | 12 |
| Tower | M&A due diligence platform powered by AI | Active | 3 |
| Tracecat | Open-source agentic security automation platform | Active | — |
| Treblo | Create hit songs with AI | Active | 4 |
| Trellis AI | Accelerate Medication Access with AI | Active | 34 |
| Triply | Operating system for travel businesses in Africa with embedded finance | Active | 18 |
| TrueClaim | Transparent, AI-powered healthcare TPA. | Active | 10 |
| Tuesday Labs | Delightful robots | Active | 7 |
| Ubicloud | Open source alternative to AWS | Active | 15 |
| Upsolve AI | Deploy trustworthy data agent that know your business | Active | 5 |
| Veles | CPQ for humans and agents | Active | 5 |
| Velorum Therapeutics | Breakthrough medicines unlocking the biology of heme | Active | 5 |
| Vibrant Labs | Autonomously scaling environments | Active | 6 |
| Vista Power | Batteries and solar for $0 upfront to help businesses save money | Active | 3 |
| Voicepanel | Evals for products | Active | 5 |
| VoxOps AI | Voice AI for Automotive | Active | 6 |
| Wavelength | Build Magical Customer Experiences | Active | 3 |
| Whip | A social feed for interactive AI Creations | Active | 6 |
| xPay | International Billing Ops, Sales Tax and Payments for SaaS businesses | Active | 3 |
| Yarn | Yarn is the video product for agentic GTM teams. | Active | 6 |
| Yenmo | Secured consumer lending in India | Active | 5 |
| Yondu | Robots to Automate Fulfillment | Active | 12 |
| Yoneda Labs | Foundation Model for Chemical Manufacturing | Active | 3 |
| Zaymo | Interactive email builder for ecommerce brands | Active | 13 |
| Zep AI | The unified context layer for enterprise data | Active | 10 |
| Arcane | AI | Acquired | 2 |
| Browser Buddy | A recommendation system for the Internet | Acquired | 2 |
| Consul | The Stablecoin Payouts Platform | Acquired | 2 |
| Lucite | Supercharging Insurance Brokers & Advisors | Acquired | 4 |
| Lumetric | The AI Analyst For Deal Teams | Acquired | 2 |
| Onyx | Open Source AI Chat | Acquired | 20 |
| Resonance | Self-improving content bank for marketing | Acquired | 2 |
| Sample | Flexible systems for clinical reasoning. | Acquired | 5 |
| Soundry AI | Remix any song into any style | Acquired | 2 |
| Speck | AI Notetaker that automates all your admin work | Acquired | 3 |
| StarJar | Starjar automates inbound document processing workflows for hospitals | Acquired | 11 |
| Trieve | All-in-one API for search, RAG, & recommendations | Acquired | 7 |
| Verse Therapy | Connecting All Ages with Speech Language Pathologists | Acquired | 3 |
| Abel | Transforming document review for litigation teams | Inactive | 2 |
| Aedilic | Open-Source AI-generated image/deepfake detection | Inactive | 2 |
| Blume Benefits | The AI copilot for health insurance brokers. | Inactive | 3 |
| Celest | The Vercel of Flutter | Inactive | 1 |
| crmCopilot | Give Salesforce the AI upgrade it deserves | Inactive | 2 |
| DGI Apparel | Expedia for ordering blank apparel | Inactive | 4 |
| Engines | Setup any repo with one command | Inactive | 2 |
| Fileforge | API For PDF Document Workflows | Inactive | 3 |
| Glimmer | AI search for massive PDFs | Inactive | 2 |
| K-Scale Labs | Open-source humanoid robots | Inactive | 10 |
| Lantern | Postgres vector database extension to build AI applications | Inactive | 3 |
| Lumona | AI-enabled search engine featuring insights from social media. | Inactive | 1 |
| Mango Health | AI Therapy for OCD | Inactive | 2 |
| Patchwork | Your team’s AI powered communication tool | Inactive | 2 |
| Preloop | Translate your experimental scripts into production ML services | Inactive | 2 |
| Quary | The first in-browser analytics engineering platform | Inactive | 2 |
| RadMate AI | Copilot for radiologists | Inactive | 2 |
| Selera Medical | One-time, device-based treatment for heart failure | Inactive | 2 |
| Stitch Technologies | - | Inactive | — |
| Tesseral | The open source platform for managing identity in business software | Inactive | 5 |
| Thorntale | The world's best presentation editor, powered by AI. | Inactive | 2 |
| Toolify | Build internal tools with AI | Inactive | 2 |
| Tusk | AI agent that generates unit and integration tests | Inactive | 4 |
| Wuri | App to read fiction stories as visual novels with images, videos,… | Inactive | 7 |
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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