YC-Backed Companies
5,949 Y Combinator portfolio companies tracked in the Altss database. For each company, Altss surfaces which family offices have co-invested alongside YC.
Summer 2024
(79 companies)
RunLocal AI
The first AI agent for optimizing ML model inference on edge hardware

Sage Care
Automating home care agency operations with AI

Saldor
Software Factories

Saphira AI
The Enablement Layer for Physical AI

Saturn
Compliance and back office workflows for Wealth Managers.

Scape
AI-native CRM that captures all your conversations

SchemeFlow
AI Report Generation for Engineering & Environmental Review

Seals AI
AI Employees for Wholesalers & Distributors

Sensei
Robotic Training Data at Scale

Sepal AI
Data Development for Advanced AI

Sharpe
Agents for quantitative research and financial data science.

Silurian
Foundation models to simulate Earth, starting with weather.

SimCare
AI avatars to scale healthcare training.

Simple AI
AI voice that sells
technology · United States

Simplex
AI agents to enroll providers with payors

Soff
AI Agents for Distributors

Sonatoria
Helping Startups Grow Organically

Sorcerer
Building a nervous system for the atmosphere

Spaceium Inc
In-Space Refueling
industrials · United States

Spherecast
AI Supply Chain Manager for CPG

Spur
Spur is your AI QA Engineer. Test your websites with natural language.

Stack Auth
The open-source Auth0 alternative

Starcloud
Data centers in space

Stardrift
AI travel planner

Stempad
Notion for science

Sterling Labs, Inc
AI For Court Reporting

Storia AI
Open source AI copilot that knows your company's code and its context

Substrate
Artificial Intelligence for your medical billing team

Superunit
Faster, more profitable background checks with AI

SureBright
Apple Care-like warranty program for every retailer

Synnax
Unified Hardware Control and Data Processing Software

Syntra
Medical chart intelligence

Tabula
Autonomous Accounting Software

Tandem
AI-native office leasing broker
technology

TaxGPT
AI tax assistant for professionals and businesses
United States

Terra
Design and sell products in minutes
hardware · United States

The Forecasting Company
Foundation models for time series
technology · United Kingdom

The Synthesis Company
100x faster scientific evidence synthesis

Theseus
GPS Denied Navigation for Drones

Thunder Compute
The world's cheapest GPU cloud

Thyme
The OS for financial advisors

Tivara
The AI workforce for medical groups

TradeFlow
AI-powered settlement for financial securities

Typa
The content engine that wins attention and drives growth.

Ultra
Practical, general-purpose robots for repetitive industrial tasks

Unbound
Use AI tools without fear of data leakage
technology · United States

Undermind
An AI agent for scientific research

Understood Care
Healthcare personal assistants for Medicare patients.

Unsloth AI
Open-Source Reinforcement Learning (RL) & Fine-tuning for LLMs.
technology · United States

Usul
AI Platform for Winning Defense & Government Contracts

Vendra
Custom Parts, Manufactured in America 🇺🇸

Vera Health
AI-powered clinical decision support for healthcare providers

Vibe
Making everyone a software engineer

VideoGen
AI that can create and edit professional videos

Village Labs
Helping America's businesses become employee owned

Void
The open source Cursor alternative

Voker
The Agent Analytics Platform

Weave Robotics
Personal robots for the home--that ship in 2025

Weel
GPS & dashcam smartphone app

Wordware
AI agents you can rely on
technology · United States

XTraffic
Technology for cities to automate and manage their traffic lights.

Zeit AI
From data to enterprise insights in just a few words.

ZeroPath
Automatically find and fix your software vulnerabilities

Zettascale
Energy efficient chips for AI

Zoa Research
Powerful quantitative forecasting models

Zuni
AI Assistant that works alongside you in your Chrome browser

autarc
autarc is the agentic OS for energy installers.

bluedoor
Professional-grade stock research in your terminal.

camfer
Building the world’s first AI mechanical engineer.

d_model
Look inside the model

deepsilicon
Software and hardware to run neural networks faster and cheaper

et al.
Feed of insights extracted from your go-to sources using LLMs.

expand.ai
Turn any website into an API.

ideate.xyz
ideate.xyz is an AI-powered 3D art suite on the web

mdhub
AI-native operating system for behavioral health clinics.

omnidock
OS for global e-commerce expansion of brands & manufacturers

pap!
Agents that earn consumers dollars when they shop, travel, and live.

winfunc
ai-native security engineering for mission critical codebases

Ångström AI
Gen AI molecular simulations that reproduce wetlab results
Summer 2023
(121 companies)
AIVideo.com
Superhuman video production as a service

Accend
AI agents for commercial underwriting at banks and fintechs

Affinity
A compliance training platform built for regulated industries.

AgentCollect
B2B debt collection powered by AI agents

Agentive
AI Workspace for Audit & Advisory Firms

Aglide
Connect every disconnected app to your SSO.
technology · United States

AiSDR
AI sales prospecting. Replace your SDR with AiSDR
technology · United States

Airgoods
Wholesale marketplace for food & beverage

Alguna
AI-Native CPQ & Billing for Modern Pricing Models

Andromeda Surgical
Autonomous surgical robots

Apoxy
Simpler and cheaper multi-cloud and cross-platform deployments.

Arcimus
A stream of engineering candidates who ship.

Artie
Software that streams data from databases to warehouses in real-time
enterprise

Atla
The improvement engine for AI agents
technology · United Kingdom

Automorphic
Infuse knowledge into language models with just 10 samples

Autotab
AI agents reliable enough to do real work

Baserun
Observability and evaluation platform for LLM apps.

Baud Labs
something new

Bland AI
The enterprise platform for AI phone calls
business/productivity software · United States

Bolto
AI Powered All-In-One Payroll, HR + Recruiting

Branch AI
AI Overview Search, as a Service

Bretton AI
AI agents for financial compliance (AML, KYC and Sanctions)
fintech · United States

Briefer
The collaborative data platform.

Bronco AI
AI for ASIC Design Verification

CORE
Your AI butler that understands you really well and proactively acts…

Cair Health
AI Agents for Healthcare RCM

CambioML
AI Teammate to Enable Every Knowledge Worker to Be a Top Performer

Campfire
The AI Native ERP for the fastest growing companies.
fintech · United States

CandorIQ
Headcount & Compensation Management

Capi Money
Helping businesses in emerging markets make pay their international…
fintech · Nigeria

Cardinal Gray
Automating lenders' interactions with the DMV

CareOasis
Get Paid for Family Caregiving

Cargo
Build your GTM workforce

Casca
Make Banking Magical

Catamaran
The AI-powered risk decision platform

Cedalio
AI agents that automate AP, procurement, and finance
technology · Argentina

Cedana
Fast, reliable, reproducible AI with GPU live migration

Cembla
AI for legal & government

Cercli
AI powered HR and Recruitment for people teams
fintech · United Arab Emirates

Certainly Health
Marketplace to book doctors and avoid surprise bills
healthcare · United States

Chatter
Dead simple LLM testing and iteration

CheqUPI
India's first UPI wallet for foreign nationals and NRIs

Chow Central Inc
Asset Light Chipotle for Africa

Clearest Health
Rebuilding trust in American health insurance.

Coba
Dual Currency Accounts For LatAm

CodeStory
Aide is an AI-native , privacy-first IDE built on top of VSCode

Cognitio Labs
Automating FDA-grade Traceability Requirements with Sensors and AI.

Constructable
Building the next Procore

Continue
Quality control for your software factory

Contour
AI voice agents for healthcare operational calls

Converge
All-in-one marketing measurement for B2C

Corgea
Corgea finds, and fixes insecure code and packages autonomously.

CraftOS
Inventory Management and POS for the Wine industry

Craftwork
Digital-native home painting franchise
services · United States

DataShare
Embed charts, dashboards and exports in your app

Deasy Labs
Metadata for GenAI workflows

Decoda Health
The all-in-one EMR built for med spas and elective care

Diligent
AI agents for fintech risk and compliance operations

Dioxus Labs
Web, Desktop, and Mobile apps with one codebase in Rust

DisputeNinja
Automate your chargebacks with AI agents

Docsum
AI contract repository

Eden Care
Claims infrastructure for African health insurance

Electric Air
Tech-enabled heat pump contractor that cuts costs by 60%

Elyos AI
AI Customer Service Agents for trades and field services

Elythea
ML to predict and prevent pregnancy complications

Empirical Health
Don't die of heart disease. Empirical is the first AI-native heart…

Envelope
Banking with built-in budgeting

Epsilla
All-in-one platform to create AI agents with your private knowledge

Every
Banking + Payroll/Benefits + Bookkeeping + Tax in one place
media · United States

Feanix Biotechnologies
Farm Genetics Made Easy - Using DNA and Software

Fiber AI
The freshest data APIs for AI sales, recruiting, & growth products

FleetWorks
AI enabled marketplace matching trucks with jobs
business/productivity software · United States

Flex
Stripe for HSA/FSA payments

Flint
Personalized learning built for schools

FlowiseAI
Open source GenAI development platform

Fortuna Health
TurboTax for Medicaid
healthcare · United States

Foundation
Shopify for Homebuilders

Fragment
Turn manual operations into scalable processes

Giga
AI Support Agent for Enterprises.

Glade
Build games at the speed of thought

Gleam
Automating Data Entry for Clinical Trials

Glide
Crypto Deposits, Wallet Funding, and Pay-with-crypto Infra

GreenTally
Affordable carbon tracking solution for all businesses

Guac
AI-powered forecasting & replenishment for grocery

HappyRobot
Intelligence that runs your operations.
technology · United States

Health Harbor
Using generative AI to call insurance for healthcare clinics

Healthtech 1
Automating repetitive processes in healthcare

Hegel AI
Open source tools for developing generative AI applications

Hiro
Your first security hire

HockeyStack
The operating system for inbound B2B revenue
enterprise applications · United States

HyLight
Small unmanned hydrogen airships for long range monitoring
industrials · France

Hyperbound
Revenue Activation Platform

Inari
Your junior AI product manager

Inconvo
Build chat-with-data agents for customer-facing applications

Inlet
AI timekeeping for legal professionals.

Inventive AI
AI Agents For RFP and Questionnaire Response Automation

Khoj
AI for humans

Kino AI
Kino is an AI media manager and video editor for humans and agents.

Kips Health
The only patient engagement software that pays you.

Kite
Screen recorder for stunning product demo videos

Kobalt Labs
AI-powered risk and compliance for financial institutions
technology · United States

Langdock
The all-in-one AI platform for companies.
technology

Leafpress
AI Energy Management

Letter AI
Empowering B2B sellers with AI-powered training, coaching, and content
technology · United States

Letterbook
AI-native customer support platform

Lifelike

LifestyleRx
Virtual Care for Type 2 Diabetes Reversal

Linc.
AI Copilot for Shippers, Carriers and Brokers

Line.Build
Incentives and financing for energy efficiency upgrades

Lio (formerly askLio)
The World's First Multi-Agent System for Procurement

Lysto
Revenue intelligence platforms for startups

MICSI
Higher resolution MRI with faster scan times.

Magic Loops
Program computers with natural language

Mandel AI
AI Supply Chain Coordinator

MantleBio
Transform scientific data into discoveries
healthcare · United States

Margin
POS & operating system that makes liquor stores more money

Maven Bio
The AI Platform for Life Sciences Intelligence

MediSearch
Search engine for trustworthy medical information.

Metalware
Firmware cybersecurity

Metoro
AI SRE For Teams on Kubernetes

Midrender
Turn product features into launch videos
Which family offices back YC companies?
Altss tracks family office deal activity across the YC portfolio. Request access to see investor-level data, round participation, and LP mandates.