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Y Combinator Portfolio Companies

Investor actively backing innovative startups and growth-stage companies across various industries and funding rounds.

Last updated: July 2026

Y Combinator Investment Overview

Portfolio Companies
5,185
Total Invested
$29.9B
Average Investment
$10.5M

Y Combinator's Most Recent Investments (2020+)

Company NameFoundedFunding StageAmountCity
A1Base2025Pre-Seed$500KSan Francisco
Enhanced Radar2025Pre-Seed$500KSan Francisco
Pig2025Pre-Seed$500KSan Francisco
Sift Dev2025Pre-Seed$500KSan Francisco
Augento2025Pre-Seed$500KSan Francisco
Osmosis AI2025Seed$500KSan Francisco
G LNK2025Pre-Seed$500KNew York
Orchids2025Pre-Seed$500KSan Francisco
Maive2025Pre-Seed$500KSan Francisco
Calltree AI2025Pre-Seed$500KSan Francisco

Complete List of Y Combinator Portfolio Companies (5,185)

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#CompanyStageAmountLocation
2426A1BasePre-Seed$500KSan Francisco, United States
2427Enhanced RadarPre-Seed$500KSan Francisco, United States
2428PigPre-Seed$500KSan Francisco, United States
2429Sift DevPre-Seed$500KSan Francisco, United States
2430AugentoPre-Seed$500KSan Francisco, United States
2431Osmosis AISeed$500KSan Francisco, United States
2432G LNKPre-Seed$500KNew York, United States
2433OrchidsPre-Seed$500KSan Francisco, United States
2434MaivePre-Seed$500KSan Francisco, United States
2435Calltree AIPre-Seed$500KSan Francisco, United States
Artificial Intelligence (AI)Developer ToolsInformation and Communications Technology (ICT)

A1Base functions as the communication, trust, and identity framework for AI agents, aimed at enhancing interactions with human users.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

AerospaceAir TransportationArtificial Intelligence (AI)Information TechnologySoftware

Enhanced Radar is an Airlines and Aviation Technology firm offering AI for air traffic control.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Cloud ComputingDeveloper ToolsGenerative AISoftware

Pig is a software development company that develops API for automating Windows desktops with AI.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Developer ToolsGenerative AISaaS

Sift Dev minimizes logging volume, empowering developers to take control back effectively.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Developer ToolsRobotics

Augento is a Robotics Engineering company that provides turn key solution to cstomers.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Developer ToolsInformation TechnologyInternetMachine LearningSoftware

Osmosis enables real-time reinforcement learning for AI agents.

San Francisco, United States
March 2025
$500K
Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)B2BHealth CareMachine Learning

G LNK is an AI-powered platform that collaborates between health care organization and professionals for drug development.

New York, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

AppsArtificial Intelligence (AI)Information TechnologySoftware

Orchids is an AI app builder for web, mobile, and agents using existing AI subscriptions.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

AerospaceArtificial Intelligence (AI)Compliance

Maive streamlines the aerospace compliance documentation required on the manufacturing shop floor.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)B2BCall CenterCustomer ServiceGenerative AISaaS

Calltree AI utilizes data-driven insights to optimize contact center operational costs.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)B2BElectronics

Sophris AI powered validation platform that verifies circuit board schematics for electrical engineers.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Generative AIProduct Design

emojis.com empowers small businesses with an AI graphic designer to create their brand identity without high costs.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Data VisualizationSoftware

Optifye.ai is an AI-based optimization platform that monitors assembly lines and automated reporting services.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

AnalyticsArtificial Intelligence (AI)Finance

Financial research platform for investment firms

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

ElectronicsIndustrial AutomationMachinery ManufacturingRobotic Process Automation (RPA)

Revise Robotics AI-powered robots are refurbishing hundreds of laptops daily, automating inspections and repairs for enhanced efficiency.

Brooklyn, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)B2BSaaS

Contrario is an entirely autonomous recruiting agency that operates on the basis of advanced artificial intelligence technology.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)B2BHealth CareInformation TechnologySaaSSoftware

HealthKey provides AI-powered tools to summarize medical records, generate diagnoses, and streamline healthcare workflows.

Austin, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)B2BHealth CareRobotics

Cenote is a AI software that automates the back office for medical practices by storing patient records.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)EdTechEducationE-Learning

Excellence Learning is an AI driven online platform that assists students in learning math and science.

Stanford, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Consumer GoodsE-CommerceFashionRetail

Retrofit is a online marketplace that curates online vintage shopping for clothes, footwear, and other fashion.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)Developer ToolsInformation TechnologyInternet

Quantstruct provides enhance and publish technical documents effortlessly using AI for automatic improvements.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Generative AISoftware

Asteroid creates and hosts AI agents for complicated tasks in browsers.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Developer ToolsGenerative AISaaS

Promptless is an AI-driven collaborator that seamlessly updates documents intended for customer engagement.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)B2BEnterpriseRecruitingSaaS

Vovana is an AI recruitment platform that allows users to automate the sourcing and screening of candidates.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)B2BComplianceFinanceFinTech

Tergle offers AI-powered auditing solutions designed to reduce repetitive audit tasks through automation.

San Francisco, United States
March 2025
$500K
Pre-Seed

Founder Contacts

30,000+ verified contacts

Showing 2426-2450 of 5,185 portfolio companies

Frequently Asked Questions About Y Combinator

How many companies has Y Combinator invested in?

Y Combinator has invested in 5,185 companies tracked in our database. The portfolio spans multiple industries and funding stages, from seed-stage startups to late-stage companies.

What industries does Y Combinator invest in?

Y Combinator's top investment sectors include Artificial Intelligence (AI), B2B, Developer Tools, Software, Generative AI. The firm invests across 37 different industry categories.

What is Y Combinator's largest investment?

Among tracked funding rounds, A1Base received $500K in a Pre-Seed round. Y Combinator's total known invested capital is $29.9B.

What is the average investment size for Y Combinator?

Y Combinator's average investment size is $10.5M across its portfolio of 5,185 companies.

What are Y Combinator's most recent investments?

Recent Y Combinator portfolio additions include A1Base, Enhanced Radar, Pig, Sift Dev, Augento. These companies were founded in 2020 or later.

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