Tech Company CollectionsY Combinator Portfolio Companies

Contrario is a managed hiring network helping growth-stage startups and enterprises fill hard roles fast. They fill critical roles faster with AI-powered expert recruiters who deliver high-signal candidates quickly. Contrario white-glove delivers top candidates by pairing proprietary AI models with recruiter workflows to filter noise and surface only the best-fit talent.

Propolis is an Information Technology company that simulates real users via swarms of autonomous browser agents that test for you.

Casco validates security, safety, and accuracy of AI apps and agents. Continuously.

StarSling is one interface that automates all the tasks that eat up your time after you’ve left your code editor: deployments, performance, incidents, and bugs. Open your homepage, click on a GitHub, Linear, or Sentry issue and you’ll see an Autofix button that triggers an agent and opens up a Pull Request with a fix, all without leaving your portal.

Opennote is an edtech company that offers an AI-powered platform for interactive learning experiences.

Bluejay is the platform for AI agent quality assurance. Reducing development processes from days to minutes, preventing performance regressions, and identifying issues before entering production.

CrowdVolt is a platform that allows fans to swap tickets to live events via a two-sided, bid-ask system, beginning with raves and EDM concerts.

Pretzel AI is a cutting-edge, open-source substitute for Jupyter Notebook designed for data scientists and analysts that solves a number of persistent problems with Jupyter. It emphasizes AI, fosters collaboration, provides a contemporary development environment, and is fully open-source.

OneGrep is an artificial intelligence company that provides insights to improve team observability data and streamline the engineering operations

Arini is an AI receptionist for dental practices that answers phone calls, and schedules appointments.

Polymet is an AI Product Designer, helps teams create well-designed user interfaces and prototypes without any design experience. You explain what you want or provide an image, and Polymet will design it for you and provide production-ready front-end code for those designs.

Aidy is an AI assistant that helps to find, qualify, and apply for U.S. federal grants. It can quickly check the project's eligibility and competitiveness across various grant programs, and assist in filling out forms and drafting documents with AI.

Oma Care is to empower, assist, and compensate people who care for our most vulnerable citizens—family caregivers.

ClaimSorted is a modern claims TPA providing a 5-star claims experience while also reducing operational and indemnity costs through our industry-leading claims team and advanced automation

USUL is a modern government intelligence platform that provides software solutions.

Revyl is an AI-enabled QA platform that allows teams to create, run, and maintain fully functional, automated E2E tests easily with no maintenance.

Browser Use is a software company currently based in San Francisco, California, United States. It has been founded in 2024 by Magnus Müller.

Airfront automates the manual tasks directly from the inbox by using artificial intelligence.

Pave Robotics builds robots that repair roads. Their first product, 'Tracer', seals cracks in asphalt faster, cheaper, and more efficiently than traditional crews.

Elevate AI is a Purchasing API tool that provides Financial infrastructure for AI agents.

Vespper is an AI 24/7 operational engineer. it automatically troubleshoots incidents and alerts, links to sources and helps you find the customer impact quickly. Whether your organisation is going through growing pains, need a better handle at dealing with SEV0 or have too many low priority unsolved issues. Vespper will adapt to your needs to democratise expert knowledge across your org

Blacksmith is a company that helps businesses to conduct their continuous integration (CI) up to twice as quickly and at half the expense. Blacksmith accomplish this by running CI on powerful gaming CPUs.

Aedilic is a transportation service provider offering Storage services with drone delivery.

CopyCat automates repetitive tasks in your browser. It’s an application layer built to create and execute workflows for browser-based tasks, making your work faster and more efficient.

Find out if Crustdata is the right fit for your future career! Explore jobs, salary, equity, and funding information. Read about work-life balance, perks, benefits, and the company culture!

Just words is a software company that makes it simple to create self-optimized content variations for emails and advertisements.

Corefin is an open-source lending platform that enables technology businesses to create and market lending solutions.

RetailReady specializes in streamlining retail compliance through directed workflows that eliminate the need for traditional paper SOPs and spreadsheet tracking. By digitizing warehouse processes, which traditionally relied on extensive manuals, into a more accessible mobile app format, RetailReady aims to reduce the financial burden of retailer chargebacks on brands and third-party logistics (3PLs). The company leverages AI to revolutionize retail fulfillment strategies, offering insights into common pitfalls in meeting retailer requirements and providing a 360-degree view of the in-store customer journey. RetailReady's solutions are designed to enhance the efficiency of supply chain, fulfillment, and logistics operations.

A software solution that aggregates spot freight opportunities for medium-to-large carriers

Operand is an AI consultant for consumer brands. We're generating 6 figure returns in P&L impact for early clients.

Canvas AI is an AI based Software Development firm that offers Copilot for Customer Success.

Blume Benefits is an insurance broker management platform that converts complex insurance quotes into clear and concise formats.

Kabilah streamlines shift change for nurses with an AI-powered assistant that replaces paper reports.

Toma is a software company currently based in New York City, New York, United States. It has been founded in 2024 by Anthony Krivonos, Monik Pamecha, and Junyu Huang.

Piramidal offers artificial intelligence software that transforms brain activity into easy-to-understand health data to help diagnose neurological diseases.

Tergle builds AI agents for auditors. Book a demo today!

GoldenBasis is a B2B fintech company that aims to help self-clearing firms receive account transfers with AI.

FanCave is the platform that allows all fans to directly offer recruits and participate in all opportunities with athletes.

BuiltRight helps home service businesses generate their website faster, better and cheaper than ever before using AI.

Arva AI (LinkedIn) makes onboarding onto a bank/fintech as a business 100x faster and significantly cheaper. We've built a highly compliant AI agent that instantly handles all low/medium risk manual KYB work in real-time as a customer is onboarding, cutting reviews to seconds and ops spend by 80%.

Pipeshift is a modular orchestration platform for building with open-source AI components—embeddings, vector databases, LLMs, vision models, and audio models—across any cloud or on-premise. Enterprises get to deploy their AI workloads in production faster and more reliably.

OpenFunnel provides AI agents that help Go-To-Market teams find potential customers by detecting real-time intent signals from the internet.

SimCare AI is a healthcare technology firm that is using artificial intelligence to revolutionize clinical training.

Hestus is a Software Development firm offering AI powered software to speeds up the development of hardware.

Ocular is a Cloud and Artificial Intelligence company, backed by Y Combinator, bringing Enterprise AI and Search to the Workplace and Engineering.

Taxo leverages AI to automate medical billing and coding for healthcare providers, accelerating claims processing while significantly reducing costs.

Thorntale is the first presentation program developed for data storytelling.

Amber is an extension of your post-sales team, providing context for each customer and action.

dScribe AI serves the function of analyzing any video online using only its link. dScribe AI takes care of the demanding work of managing audio and video content for social media, so you can concentrate on what matters for your business. dScribe AI has you covered, whether you're a developer wanting to incorporate social media analysis into your app, a business aiming to gain a better understanding of your audience, or an enterprise in need of mass brand protection.

AI-powered operating system for short-term rental hosts

Pap! automates refund claims by scanning email receipts, recovering billions owed to consumers from price drops and flight delays.

Linkup connects large language models (LLMs) and AI agents to the internet. The platform enables AI systems to access, search, and interact with web content efficiently, enhancing their capabilities and reducing inaccuracies. By providing APIs, Linkup allows developers to integrate web content into AI applications seamlessly.

Agentic Labs is integrating AI into software design and architecture to alleviate pain points. Although there are many tools available to developers today for quickly developing code, the most difficult and labor-intensive aspect of software engineering is building the systems that integrate this code.

We transform audio into intelligence — building proprietary data and cutting-edge audio analytics to fuel the next generation of AI.

nCompass Technologies is a platform for accelerating and hosting open-source and custom AI models. It offers low-latency AI deployment without rate-limiting. All with just one line of code.

Octolane AI is an artificial intelligence platform that rebuilds salesforce with the power of AI.

Taiki is an API that automatically pulls tax documents and data from payroll and financial institutions using AI.

And AI is a platform for managing patents, helping attorneys and inventors streamline searches and claim drafting.

Alacrity is a company that assists businesses in preventing ATOs (account takeovers) by offering a range of multi-factor authentication tools that provide both security and a positive user experience.

careCycle is an AI workforce for Medicare agencies and FMOs, supporting top agencies in their operations.

Pickle generates lifelike AI clones that allow users to join video calls without using a camera. Our AI avatar lip-syncs to the user's voice in real-time, replicating their facial expressions and interactions with near zero latency.

PathPilot offers an AI-powered platform that analyzes session replays to reveal user insights, UI issues, and improvement recommendations.

Tinfoil provides provable security for AI workloads, bringing the security guarantees of on-prem to the cloud.

Hamming AI is an experimentation platform that helps teams build reliable AI products.

ProSights is an AI-powered enterprise search platform designed for investors.

Lumen Space offers cloud computing and data relay to satellites in space. The company's mission is to accelerate downlink times by processing data in orbit.

Lucite is a finance productivity software that automates research and presentation creation for investment bankers, investors, corporate finance teams, and consultants.

Open-source framework to accelerate development tasks with AI

Ply Health’s platform delivers a better and faster contracting and credentialing experience. Using our tech + automation and behavioral health expertise, we've been able to get providers in network with payers weeks to months faster than other vendors. Ply Health partners with physical practices, digital practices, build-your-own-business platforms and new provider entrepreneurs in behavioral to magically simplify data collection, enrollment submission, follow ups and record keeping. Ply Health is backed by YCombinator and is based in San Francisco.

Reprompt is the control panel for production AI systems.

Haplotype is a startup that improves human health over time by dramatically improving the security, accessibility, and sophistication of population genetics software and polygenic risk scores.

Mentra’s mission is to employ 100,000 talented neurodiverse individuals by 2025. Join today to close the autism employment gap as a candidate, recruiter, or vocational rehabilitation center. Founded at Georgia Tech by disability advocates, Mentra's aim is to create an accessible future for those on the autism spectrum, including Asperger's syndrome, ADHD, OCD, Dyslexia, and other learning disabilities.

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K-Scale Labs is a robotic engineering company specializing in creating open-source humanoid robots.

EdgeTrace makes video data easily available and actionable for important businesses.

Spur works in automation of all functional codes and E2E testing.

Ergo empowers modern sales teams to maximize efficiency, enhance pipeline accuracy, and drive predictable growth by automating CRM updates and surfacing actionable insights. The Ergo CRM Automation Platform captures and integrates customer interactions, streamlines data management, and powers workflows that eliminate manual processes and improve team productivity. Businesses rely on Ergo to keep their CRM up-to-date, ensure sales data consistency, and unlock their revenue potential with smarter, faster sales operations.

Astrix builds AI purchasing agents for healthcare providers. Astrix helps providers secure better deals on recurring medical supplies, equipment, and pharmacy orders by using AI to find the best offers from reputable vendors. Powered by generative AI, Astrix aggregates and normalizes data from millions of sources, delivering actionable pricing insights for buyers and sellers alike. Our team brings expertise in building AI systems from Palantir, Oxford, Duke Health, and MedStar Health. Backed by Y Combinator, Astrix operates globally from San Francisco, NYC, and London.

Yondu is a robotics engineering firm offering AI models for diverse robotic applications, including a voice-controlled drone.

Superfilter is a companion that manages your inbox with the intelligence of an executive assistant. It never misses an important email, suggests follow up actions, and handles things like meeting coordination and quick replies in one click. Superfilter is for founders and executives who want to: * Spend less time checking email. * Never drop the ball on high priority messages. * Delegate email related tasks.

Leaping autonomously into the code is a recipe for bugs and errors. Instead, trust the tested code fixes for a reliable and successful solution.

Olive allows companies to generate internal tools connected to their data sources with AI.

Pickle is a mobile application that enables its users to share photos of food with others. The application allows its users to view, upload, and share photos of food from restaurants with others. Users can then landmark the food picture to the location it was purchased from. The application is available for iOS and Android platforms. Pickle was launched in 2013 by Ben Thomas and Barthelemy Menayas and is based in California.

Givefront is the financial operating system for non-profits.

Revamp AI uses artifical intelligence to generate targeted email and paid acquisition campaigns for eCommerce brands and agencies.

Backdrop, previously known as Twig, offers a specialized service in the form of expense management for the film, TV, and music production industry. The company operates as a vertical SaaS platform, providing a streamlined solution for managing expenses related to TV, film, music, and commercials. Backed by Y Combinator, Backdrop aims to simplify the financial aspects of production, making it easier for production companies to focus on their creative endeavors.

Metoro is an AI-powered site reliability engineer. Engineers can ask Metoro questions like “Why is my web app down”, Metoro will investigate and return a custom debugging dashboard with the root cause and potential fixes.

Your AI bookkeeper understands your business and is as accessible as sending an email. From creating detailed invoices to managing bills and payments, LedgerUp’s AI ensures every financial aspect is handled with precision. LedgerUp is more than a bookkeeper - it’s your financial partner.

Spark AI is a search engine and workflow solution for clean energy developers that helps them break ground 10x sooner. It lets developers easily search grid policy, incentives, and permitting requirements across thousands of PDFs, proprietary datasets, websites, and maps so they can identify suitable sites and markets in seconds instead of days.

Reducto's API converts unstructured documents into structured outputs for RAG, process automation, and more.

Gumloop provides a platform that allows users to automate various workflows with AI without needing coding knowledge. The service supports tasks such as web scraping, document processing, and SEO marketing through a visual interface, enabling users to design and run complex workflows easily. By integrating with numerous applications, Gumloop enhances productivity and streamlines operations for businesses across different sectors.

Spine (YC S23) is a platform to build enterprise-ready AI copilots to enhance downstream customer UX.

Exploding Gradients is into building an open-source evaluation and testing infrastructure for LLM applications.

Anaphero is health care unit that helps in reducing clinical staff shortage using virtual agents that can safely interact with patients.

Navier AI CFD platform allows aerospace and mechanical engineers to design high-performance machines with ease.

AI Accelerated Deal Flow and Portfolio Intelligence

Parea AI (YC S23) is the essential developer platform for prompt engineering and monitoring every stage of LLM application development. Parea provides debugging, testing, evaluation, and monitoring in one unified platform.

Inri is an investment platform for Indian Expats to diversify capital.

Clueso streamlines your entire customer education workflow. Transform basic screen captures of your product features into rich, studio-grade explainer videos and step-by-step guides. Imagine supercharging your help center's quality by 10x while reducing the creation time by 90%. Yes, that's Clueso for you!

Line empowers contractors with tools that make building decarbonization projects affordable for their customers and boosts conversion rates. With buildings accounting for almost 40% of US GHG emissions, retrofitting for efficiency is essential to reduce emissions and load on the grid, but expensive. Over $80B of rebates, incentives and financing is available but hyper-fragmented across utilities, federal funds, grants, and green lending programs. Line consolidates disparate sources of funds and simplifies finding and applying for rebates and incentives. Line provides both a stand alone app and API endpoints.