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.
Winter 2024
(17 companies)
Yenmo
Secured consumer lending in India

Yondu
Robots to Automate Fulfillment

Yoneda Labs
Foundation Model for Chemical Manufacturing

Zaymo
Interactive email builder for ecommerce brands

Zep AI
Agent Context Is Hard. We Fixed It.

atopile
We make tools to design electronics circuit boards with code

camelAI
AI software engineer that lives on its own computer

crmCopilot
Give Salesforce the AI upgrade it deserves

ego
AI applied research lab building synthetic sapience; human-like AI

floatingpoint
Post-training data to teach models document work

ion design
AI that creates & tests 100s of landing pages for your product

kater.ai
Deliver complete data analysis from a single question

malibou
the first all-in-one payroll and HR software for French SMBs

nCompass Technologies
Optimize performance on GPUs - 10x faster

renderlet
Build interactive applications that run anywhere

sync.
AI lipsync tool for video content creators

xPay
International Billing Ops, Sales Tax and Payments for SaaS businesses
Winter 2023
(183 companies)
1stCollab
Performance-Optimized Influencer Marketing at Scale

222
the AI social facilitator for offline human to human interactions

Adri AI
Your AI Partner for SAP Development

Adventris Pharmaceuticals
Adventris makes cancer vaccines

Alaan
Modern finance platform for the Middle East
fintech · United Arab Emirates

Alloy
AI Prototyping for Product Management

Alphawatch AI
Secure Document Agent

Ariglad
Knowledge base maintenance on auto-pilot

Arroyo
Cloud-native stream processing

Atmeto
We develop ML that optimizes how batteries in the grid store energy

Automat
AI enabled RPA using ChatGPT and computer vision

Avoca
AI-powered Sales Agent for Service-Based Industries

Backdrop
Hire your first AI Product team.

Benchmark
Decision infrastructure for investment firms

Berry
Scale customer success and onboarding with AI

Bluebirds
Automate outbound with signals

Bluedot
Bluedot is a single payment platform for EV drivers and fleets.

Blyss
End-to-end encrypted AI.

Booth AI
Generative AI Photographer for E-Commerce

Boundary
The programming language for AI

Brewit
Conversational data analytics for every team

BuildJet
High-performance computing cloud

Bujeti
The Finance Control Centre for African Businesses
fintech · Nigeria

Cakework
API that adds cloud hosting to any developer platform

Cardinal
Your AI product backlog

Chart
Realtime Access to Verified Tax Records

Chima
Building infrastructure tools to help large companies customize their…

Choppy!
FAST FLAVORFUL PROTEIN

Clad
Project management software for building infrastructure.

Clearspace
Less screen time, more life.

ClickPe
Finance on a Click

Cloudchipr
The #1 Actionable FinOps Platform

Clueso
Create beautiful videos & docs for any product or process in minutes
enterprise applications · United States

Cobblestone
Delinquency reduction and automation software for institutional…

CodeParrot AI
Helps Developers build stunning UI Lightning Fast ⚡️

Coldreach
Find the best leads with custom intent signals

CombineHealth
Automating Healthcare Revenue Cycle Management with AI Workforce

Common Paper
The SAFE for commercial contracts
legaltech · United States

Concourse
AI Agents for corporate finance teams
financial services · United States

Conduit
The operating system for shipping and receiving.

Constant
AI Analysts for the Buy-Side

Coperniq
Workflow software for solar & energy contractors ☀️😎

Corgi Labs
AI to increase payment acceptance and reduce fraud for businesses

Cosine
Fully Agentic SWE

CreatorML
Foundation Model for Human Attention

Credal.ai
The Control Plane for Enterprise Agents

DAGWorks Inc.
Open source tools & services for reliable AI Agents & AI Applications

Dashdive
Break down AI and cloud costs by feature and customer

DataSuite
Dataset Management for AI Trainers

Dataglade
The smart way to research stocks.

David
Build and host internal tools

Decohere
Real-time generative AI

Defer
Zero infrastructure background processing platform.

Demospace

Depot
Build faster. Waste less time.
enterprise infrastructure · United States

Designbase
Design and build great interfaces

Diffuse Bio
Generative AI for protein design

Dill
Dill helps construction suppliers automate accounts receivable,…

Double – Coding Copilot
AI coding copilot engineered for performance

DrDroid
Your best friend in production.

Dream3D
Generative AI Worlds

Echo
Founder-led sales co-pilot for B2B startups.

Edge
The ultimate IP assistant.

EdgeBit
Autofix your software dependencies

Epsilon
AI Search Engine for Academic Research

Escape
Offensive security for the teams that are 100x outnumbered

Extend
Production-ready document processing
technology · United States

EzDubs
Real-time speech translation

Fabius
AI to improve Sales Calls

FactIQ
Data Explorer for the US Economy

Fairway Health
AI Co-Pilot for Health Insurers to Authorize Treatment Faster

Fastgen
Webflow for the Backend

Fern
Instantly offer SDKs and API Docs

Fetchr
The Personal Shopper in Your Pocket

Finic
The AI fraud hunter

Finni Health
Empowering Autism Care Providers to Go Independent
healthcare · United States

Finta
Magically simplify accounting and taxes

Fintool
Financial copilot for institutional investors

Finvest
Easy way to buy US Treasury Bills

FlexDesk
AI Agents for corporate real estate teams

FlexWash
The operating system for the car wash industry.

Flower
Train AI on distributed data

Floworks
Hire the best AI Sales employees | AI SDR | AI RevOps | AI EA

Frigade
AI-powered product assistance for modern software teams
technology · United States

Glass Health
AI-Powered Clinical Decision Support & Ambient Scribing
healthcare · United States

Gluetrail
Create step by step articles with screenshots and videos 10x faster

GoodCourse
The TikTok style corporate training platform

Gooseworks
OpenClaw-style AI coworkers for GTM teams

GovEagle
AI for Government Contractors

Hadrius
Automating Securities Compliance

Hammr
Rippling for the Construction Industry

Haven
AI workforce for property management

Helicone
LLM Observability for Developers

Helios
Create your AI workforce

Hindsight
Deal Intelligence and Sales Coaching Platform

Hippo Scribe
AI assisted documentation for PT/OT/SLP

Homeflow
Simplifying insurance for large real estate investors

Hona
Personal Injury Legal Work - Automated

Honeydew
The home for shared data logic

IcePanel
Design and explain complex software architecture.

Iliad
AI-accelerated procedural material and texture tools.

Indexical
AI-powered data extraction engine

Infinia
Move money programmatically

Infisical
Unified platform for secrets, certs, and privileged access management
security · United States

Inkeep
Build AI Agent teammates and automations in code or no-code
technology · United States

Interlock
We are still in stealth mode.

Invitris
Creating new protein-based drugs at scale

Invopop
We help global software companies comply with local tax reporting

JustPaid
Billing Automation for B2B that actually works.
fintech · United States

KV Cash
KV Cash, a blockchain where contracts can finally think

Keep
The open-source AIOps platform

Kivo Health
AI-powered care for seniors with chronic disease

Koywe
Crypto On and Off Ramp for Latam

Kyber
Instantly draft, review, and send complex regulatory notices.

Laminate

Langfuse
Open source LLM engineering platform

Latent
Medical language models to automate healthcare operations
healthcare it · United States

Lavo Life Sciences
AI for drug formulation

Layup
Guide your users. Right in your product.

Lightski
AI Agents for Enterprises

LinkGrep
AI browser copilot for teams

Linum
type text, dream video

LiteLLM
Call every LLM API like it's OpenAI [100+ LLMs]

Littio
Dollar banking for people in Latin America

Loula
Enabling birth & postpartum doulas to easily accept insurance.

Luca
The Modern Pricing Engine for Retail

Lume
Speed up customer implementation with AI

Lynx
AI platform for investigating and resolving engineering incidents

Magic Patterns
Go from idea to production with AI.
technology · United States

Magicflow 𐂂
The Gen AI evaluation and curation platform

MagnaPlay
AI-powered game translation.

Mantys
ARR Reporting and Forecasting for SaaS companies

Matano
Cloud Native SIEM (alternative to Splunk/Elastic)

Mercoa
AI Agent for Billpay platforms to pay invoices with virtual cards

Metal
Institutional Intelligence for Private Equity

Metal
Metal is an AI-driven operating system for fundraising

Middleware
AI-based full stack observability platform

Milio
B2B-2C real-time account to account payments

Miracle
Accelerate clinical trials with real-time, actionable insights

Modulari-T
We teach your immune system to attack and cure cancer

Mogara
Automatic software R&D capitalization

Muffin Data
Modern analytics for CPG brands

Mulligan
AI automation for insurance brokerages

Nango
A single API for all your integrations

Narrative
AI agents for end-to-end testing

Neptyne
The programmable spreadsheet.
business software

No Cap
AI startup investor, No Cap

Novelcare
Empowering every doctor and every patient to participate in research

Noya Software
Product design tool that lets everyone design like a designer

Numeral
The AI-native sales tax solution.
fintech · United States

Odigos Technologies Inc.
Enterprise-Grade OpenTelemetry
technology · United States

OfOne
AI-powered order taker for restaurant drive-thrus

Ohm
Ohm helps engineering labs develop better products faster, with AI.

Omnistrate
Transform any software to multi-cloud SaaS in minutes not years

OneText
Frictionless payments via SMS
technology · United States

Onshore
AI for corporate tax

OpenInt
Open Source Embedded Product Integrations

OpenMeter
Usage Metering, AI & API Monetization
enterprise infrastructure · United States

OpenSight
AI-powered customer support automation for fast-growing companies

Orchid
AI-powered EHR for independent mental health professionals

OutSail Technologies
Revolutionary, Modern Wing Sails

Outerbase
The interface for your database

Overflux
Streamline EV charger installations for real estate developers

Overlord
AI Accountability Partner

Pair AI
Reimagining education with short form video and AI

Palomma
AI & financial services for real estate in LatAm, starting by rent

Pando Bioscience
Gen-AI Designed Enzymes for Pharmaceutical Innovation

Paperplane
Credit risk management platform for builders' merchants

Parabolic
AI assistant for customer support

Peeba
Risk-free wholesale for retailers across Southeast Asia

Persana AI
Sales Agents with 100+ data sources to close more deals
technology · United States

Persist AI
Developing long-lasting drug formulations 50% faster
healthcare · United States

Pier
Stripe for Credit - Trusted Credit Compliance Partner

Pierre
Pierre is a new, opinionated, git platform.

Pigeon
AI-powered document automation: collect, review, extract, and sync.

Pirros
Github for Construction

PlayAI
Our mission is to make Voice AI accessible and useful to all.

Pledge Health
AI RCM assistant that handles any insurance task on payer portals for…

Plutis

Pointwise
App that tells you which credit cards to get and when

PoloTab
Restaurant software that actually works

PoplarML
Deploy Machine Learning Models with One Command

Proglix
B2B Marketplace for Steel Raw Materials
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.