Tech Company CollectionsY Combinator Portfolio Companies

Y Combinator is a renowned startup accelerator and venture capital firm that has played a pivotal role in shaping the tech startup landscape. Founded in 2005 by Paul Graham, Y Combinator (often abbreviated as "YC") is widely recognized for its unique approach to nurturing and supporting early-stage startups.

YC's primary program is its startup accelerator, which typically runs in three-month cycles. During these cycles, selected startups receive a combination of funding, mentorship, resources, and guidance to help them develop their products, refine their business models, and prepare for growth. In exchange for a small equity stake, startups receive seed funding, access to a network of experienced mentors, and the opportunity to present their progress to a room full of potential investors during a culminating "Demo Day."

YC's mentor network is one of its defining features. The network consists of successful entrepreneurs, industry experts, and investors who provide startups with invaluable insights, advice, and connections. This mentorship-driven approach allows founders to tap into a wealth of knowledge and experience, enabling them to make informed decisions and navigate the challenges of building a startup.

Beyond its accelerator program, Y Combinator offers additional resources to support the startup community. YC Continuity is a fund designed to provide growth-stage funding to YC alumni companies as they continue to scale. YC Research focuses on funding important projects, and YC Startups is a resource hub for early-stage founders, featuring advice, articles, and tools.

Notably, Y Combinator has a remarkable track record of backing successful companies. YC has invested in and supported startups that have gone on to become industry giants, including Airbnb, Dropbox, Stripe, Reddit, DoorDash, and many more. The success stories from YC's portfolio showcase the impact of the accelerator's guidance and resources.

In essence, Y Combinator is more than just a venture capital firm; it's an ecosystem that fosters innovation, nurtures entrepreneurship, and empowers founders to turn their ideas into thriving businesses. Through its accelerator program, mentor network, and ongoing support, YC continues to shape the trajectory of startups and contribute to the evolution of the tech industry.

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List of Y Combinator Portfolio Companies

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StarSling logo
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
2 - 102025$500,000
Casco logo
Casco validates security, safety, and accuracy of AI apps and agents. Continuously.
2 - 102025
Bluejay logo
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.
5 - 102025$4,000,000
Contrario logo
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 candi
5 - 102025$500,000
Propolis logo
Propolis is an Information Technology company that simulates real users via swarms of autonomous browser agents that test for you.
2 - 102025$500,000
Opennote logo
Opennote is an edtech company that offers an AI-powered platform for interactive learning experiences.
2 - 102025$1,350,000
Lumen Orbit logo
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.
RedmondWA5 - 202024$23,900,000
CopyCat logo
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.
5 - 102024$1,925,000
Ply Health logo
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. Pl
San FranciscoCA5 - 102024$500,000
Mentra logo
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
5 - 202024$5,110,000
Hamming AI logo
Hamming AI is an experimentation platform that helps teams build reliable AI products.
San FranciscoCA5 - 202024$4,300,000
USUL logo
USUL is a modern government intelligence platform that provides software solutions.
ChehalisWA5 - 102024$3,300,000
Fan Cave logo
FanCave is the platform that allows all fans to directly offer recruits and participate in all opportunities with athletes.
North AttleboroughMA2 - 102024$500,000
Aidy logo
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.
San FranciscoCA2 - 102024$500,000
Toma logo
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.
New YorkNY10 - 502024$17,500,000
Hestus logo
Hestus is a Software Development firm offering AI powered software to speeds up the development of hardware.
2 - 102024$2,000,000
Revyl logo
Revyl is an AI-enabled QA platform that allows teams to create, run, and maintain fully functional, automated E2E tests easily with no maintenance.
San FranciscoCA5 - 102024$1,100,000
Origami Agents logo
Find companies actively searching for your solution
San FranciscoCA5 - 202024$2,500,000
OneGrep logo
OneGrep is an artificial intelligence company that provides insights to improve team observability data and streamline the engineering operations
New YorkNY2 - 102024$500,000
Pretzel AI logo
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 envir
San FranciscoCA2 - 102024$500,000
David AI logo
We transform audio into intelligence — building proprietary data and cutting-edge audio analytics to fuel the next generation of AI.
10 - 502024$80,500,000
Polymet logo
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
1 - 502024$2,000,000
CrowdVolt logo
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.
New YorkNY5 - 202024$500,000
GoldenBasis logo
GoldenBasis is a B2B fintech company that aims to help self-clearing firms receive account transfers with AI.
San FranciscoCA2 - 102024$500,000
Ergo logo
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, st
2 - 102024$500,000
Browser Use logo
Browser Use is a software company currently based in San Francisco, California, United States. It has been founded in 2024 by Magnus Müller.
5 - 202024$17,500,000
Patched logo
Open-source framework to accelerate development tasks with AI
San FranciscoCA1 - 102024
Haplotype Labs logo
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.
OrindaCA1 - 102024$500,000
Tergle logo
Tergle builds AI agents for auditors. Book a demo today!
2 - 102024$500,000
Arva AI logo
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, cuttin
San FranciscoCA5 - 202024$3,125,000
Pickle logo
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.
5 - 2020246000000000 KRW
Airfront logo
Airfront automates the manual tasks directly from the inbox by using artificial intelligence.
San FranciscoCA1 - 102024$500,000
Agentic Labs logo
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
New YorkNY2 - 102024$500,000
Superfilter logo
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
RemoteOR10 - 502024
Amber AI logo
Amber is an extension of your post-sales team, providing context for each customer and action.
2 - 102024
Pave Robotics logo
Pave Robotics builds robots that repair roads. Their first product, 'Tracer', seals cracks in asphalt faster, cheaper, and more efficiently than traditional crews.
5 - 102024$5,500,000
ProSights logo
ProSights is an AI-powered enterprise search platform designed for investors.
New YorkNY2 - 102024$2,700,000
DScribe AI logo
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
2 - 102024$1,700,000
Yondu logo
Yondu is a robotics engineering firm offering AI models for diverse robotic applications, including a voice-controlled drone.
San FranciscoCAundefined - undefined2024$500,000
Thorntale logo
Thorntale is the first presentation program developed for data storytelling.
San FranciscoCA1 - 102024$500,000
Corefin logo
Corefin is an open-source lending platform that enables technology businesses to create and market lending solutions.
San FranciscoCA1 - 102024$500,000
Retail Ready logo
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 mor
AtlantaGA5 - 202024$3,800,000
Spur logo
Spur works in automation of all functional codes and E2E testing.
5 - 202024$5,000,000
Oma Care logo
Oma Care is to empower, assist, and compensate people who care for our most vulnerable citizens—family caregivers.
San FranciscoCA2 - 102024$500,000
Alacrity logo
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.
San FranciscoCA1 - 102024$500,000
Crustdata logo
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!
20 - 502024$12,000,000
Pickle logo
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
5 - 2020246000000000 KRW
PathPilot logo
PathPilot offers an AI-powered platform that analyzes session replays to reveal user insights, UI issues, and improvement recommendations.
San FranciscoCA2 - 102024$500,000
Manifold Freight logo
A software solution that aggregates spot freight opportunities for medium-to-large carriers
SeattleWA10 - 4002024$2,400,000
Leaping logo
Leaping autonomously into the code is a recipe for bugs and errors. Instead, trust the tested code fixes for a reliable and successful solution.
San FranciscoCA2 - 102024$500,000
ProhostAI logo
AI-powered operating system for short-term rental hosts
San FranciscoCA2 - 102024
Kabilah logo
Kabilah streamlines shift change for nurses with an AI-powered assistant that replaces paper reports.
StanfordCA1 - 102024$500,000
CareCycle logo
careCycle is an AI workforce for Medicare agencies and FMOs, supporting top agencies in their operations.
5 - 102024$2,000,000
Ocular AI logo
Ocular is a Cloud and Artificial Intelligence company, backed by Y Combinator, bringing Enterprise AI and Search to the Workplace and Engineering.
AtlantaGA2 - 102024$2,500,000
NCompass Technologies logo
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.
San FranciscoCA2 - 102024$500,000
Arini logo
Arini is an AI receptionist for dental practices that answers phone calls, and schedules appointments.
San FranciscoCA1 - 102024$500,000
Blume Benefits logo
Blume Benefits is an insurance broker management platform that converts complex insurance quotes into clear and concise formats.
San FranciscoCA1 - 102024$500,000
Pipeshift logo
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
5 - 202024$3,000,000
And AI logo
And AI is a platform for managing patents, helping attorneys and inventors streamline searches and claim drafting.
5 - 202024$7,000,000
Vespper logo
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
2 - 102024$500,000
Aedilic logo
Aedilic is a transportation service provider offering Storage services with drone delivery.
Palo AltoCA2 - 102024$500,000
BuiltRight logo
BuiltRight helps home service businesses generate their website faster, better and cheaper than ever before using AI.
ChicagoIL2 - 102024$5,050,000
Taiki logo
Taiki is an API that automatically pulls tax documents and data from payroll and financial institutions using AI.
San FranciscoCA1 - 102024$500,000
Linkup logo
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 allo
New YorkNY2 - 1020243000000 EUR
Edgetrace logo
EdgeTrace makes video data easily available and actionable for important businesses.
San FranciscoCA2 - 102024$500,000
Tinfoil logo
Tinfoil provides provable security for AI workloads, bringing the security guarantees of on-prem to the cloud.
1 - 102024
Reprompt logo
Reprompt is the control panel for production AI systems.
South San FranciscoCA2 - 102024$500,000
Piramidal logo
Piramidal offers artificial intelligence software that transforms brain activity into easy-to-understand health data to help diagnose neurological diseases.
San FranciscoCA2 - 102024$8,000,000
OpenFunnel logo
OpenFunnel provides AI agents that help Go-To-Market teams find potential customers by detecting real-time intent signals from the internet.
San FranciscoCA2 - 102024$1,300,000
Just Words logo
Just words is a software company that makes it simple to create self-optimized content variations for emails and advertisements.
San FranciscoCA5 - 202024$2,200,000
ClaimSorted logo
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
New YorkNY50 - 1002024$16,300,000
TAXO logo
Taxo leverages AI to automate medical billing and coding for healthcare providers, accelerating claims processing while significantly reducing costs.
5 - 102024$10,500,000
Canvas AI logo
Canvas AI is an AI based Software Development firm that offers Copilot for Customer Success.
San FranciscoCA1 - 102024$500,000
SimCare AI logo
SimCare AI is a healthcare technology firm that is using artificial intelligence to revolutionize clinical training.
2 - 102024$2,500,000
Operand logo
Operand is an AI consultant for consumer brands. We're generating 6 figure returns in P&L impact for early clients.
1 - 102024$3,600,000
Pap! logo
Pap! automates refund claims by scanning email receipts, recovering billions owed to consumers from price drops and flight delays.
2 - 102024$5,242,000
Astrix Health logo
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, Astr
2 - 102024$2,000,000
Olive logo
Olive allows companies to generate internal tools connected to their data sources with AI.
2 - 102024$2,100,000
ELEV4TE logo
Elevate AI is a Purchasing API tool that provides Financial infrastructure for AI agents.
New YorkNY5 - 202024$500,000
Octolane AI logo
Octolane AI is an artificial intelligence platform that rebuilds salesforce with the power of AI.
New YorkNY2 - 102024$3,100,000
Lucite logo
Lucite is a finance productivity software that automates research and presentation creation for investment bankers, investors, corporate finance teams, and consultants.
New YorkNY2 - 102024$500,000
K-Scale Labs logo
K-Scale Labs is a robotic engineering company specializing in creating open-source humanoid robots.
New YorkNY2 - 102024$500,000
Blacksmith logo
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.
VenturaCA10 - 202024$14,000,000
Twenty logo
Twenty builds the modern salesforce, powered by the open source community.
San FranciscoCA10 - 502023$10,000,000
Serial logo
Serial is software to help root cause manufacturing issues in seconds.
San FranciscoCA2 - 102023$500,000
Trieve logo
Trieve provides search teams with infrastructure for retrieval and RAG.
San FranciscoCA2 - 102023$4,000,000
Velorum Therapeutics logo
Velorum Therapeutics produces powerful cancer treatments that starve tumors.
South San FranciscoCA1 - 102023$500,000
Thread logo
Thread develops incident management tools for enterprises.
San FranciscoCA10 - 502023$11,000,000
Decipher AI logo
Decipher AI is a software platform that monitors, identify, prioritize, and resolve errors by analyzing data using artificial intelligence.
San FranciscoCA1 - 102023$500,000
Trainy logo
We're working on open source tooling to take the guesswork out of optimizing the speed of distributed model training. We've built a dashboard for understanding multi-gpu profiles and tools to train and serve LLMs that you can try right now. Check out our p
San DiegoCA2 - 102023$500,000
Bland AI logo
Bland is the platform for AI phone calling. Build, test, and scale AI phone agents, and integrate with our API. Get started at https://t.co/ZIAmhsRzor
San FranciscoCA10 - 1002023$56,000,000
CatX logo
The exchange for trading and transferring risk
DoverDE1 - 102023$3,200,000
Powder logo
Powder is a financial services company currently based in Los Altos, California, United States. It has been founded in 2023 by Dominic Tully, Jeffrey Magder, and David Goerz.
LexingtonKY5 - 102023$5,500,000
Fragment logo
Fragment bridges AI-human collaboration, aiding fintech ops in task management and enhancing automation with human oversight.
San FranciscoCA2 - 102023$500,000
Zimi logo
At Zimi, we're breaking down barriers to trade and unlocking Africa's export potential by making it easier, faster, and cheaper for merchants and manufacturers to sell globally. Zimi integrates with sales channels to make international shipping and order f
HawleyPA2 - 102023$2,500,000
Contour logo
Contour helps developers intelligently create and maintain end-to-end tests with minimal engineering effort
San FranciscoCA2 - 102023$500,000
GigaML logo
We make high-quality finetuned models based on open-source LLMs
San FranciscoCA20 - 502023$3,600,000
Digi logo
Digi develops romantic AI companions that allow users to interact with a customized avatar. The company is exploring the extent to which individuals can derive satisfaction from relationships with AI partners. Through its initial app, users can engage with
San FranciscoCA20 - 502023$6,750,000
Solidroad logo
Increase CSAT without increasing cost with the AI QA & training platform that reviews 100% of your customer conversations. Generate individualized training simulations for human reps and refinement recommendations for AI agents.
5 - 202023
Metal logo
AI Accelerated Deal Flow and Portfolio Intelligence
New YorkNY5 - 102023$7,500,000
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