Y Combinator Portfolio

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 2023

(183 companies)
1stCollab logo
W23

1stCollab

Performance-Optimized Influencer Marketing at Scale

222 logo
W23

222

the AI social facilitator for offline human to human interactions

Adri AI logo
W23

Adri AI

Your AI Partner for SAP Development

Adventris Pharmaceuticals logo
W23

Adventris Pharmaceuticals

Adventris makes cancer vaccines

Alaan logo
W23

Alaan

Modern finance platform for the Middle East

fintech · United Arab Emirates

Alloy logo
W23

Alloy

AI Prototyping for Product Management

Alphawatch AI logo
W23

Alphawatch AI

Secure Document Agent

Ariglad logo
W23

Ariglad

Knowledge base maintenance on auto-pilot

Arroyo logo
W23

Arroyo

Cloud-native stream processing

Atmeto logo
W23

Atmeto

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

Automat logo
W23

Automat

AI enabled RPA using ChatGPT and computer vision

Avoca logo
W23

Avoca

AI-powered Sales Agent for Service-Based Industries

Backdrop logo
W23

Backdrop

Hire your first AI Product team.

Benchmark logo
W23

Benchmark

Decision infrastructure for investment firms

Berry logo
W23

Berry

Scale customer success and onboarding with AI

Bluebirds logo
W23

Bluebirds

Automate outbound with signals

Bluedot logo
W23

Bluedot

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

Blyss logo
W23

Blyss

End-to-end encrypted AI.

Booth AI logo
W23

Booth AI

Generative AI Photographer for E-Commerce

Boundary logo
W23

Boundary

The programming language for AI

Brewit logo
W23

Brewit

Conversational data analytics for every team

BuildJet logo
W23

BuildJet

High-performance computing cloud

Bujeti logo
W23

Bujeti

The Finance Control Centre for African Businesses

fintech · Nigeria

Cakework logo
W23

Cakework

API that adds cloud hosting to any developer platform

Cardinal logo
W23

Cardinal

Your AI product backlog

Chart logo
W23

Chart

Realtime Access to Verified Tax Records

Chima logo
W23

Chima

Building infrastructure tools to help large companies customize their…

Choppy! logo
W23

Choppy!

FAST FLAVORFUL PROTEIN

Clad logo
W23

Clad

Project management software for building infrastructure.

Clearspace logo
W23

Clearspace

Less screen time, more life.

ClickPe logo
W23

ClickPe

Finance on a Click

Cloudchipr logo
W23

Cloudchipr

The #1 Actionable FinOps Platform

Clueso logo
W23

Clueso

Create beautiful videos & docs for any product or process in minutes

enterprise applications · United States

Cobblestone logo
W23

Cobblestone

Delinquency reduction and automation software for institutional…

CodeParrot AI logo
W23

CodeParrot AI

Helps Developers build stunning UI Lightning Fast ⚡️

Coldreach logo
W23

Coldreach

Find the best leads with custom intent signals

CombineHealth logo
W23

CombineHealth

Automating Healthcare Revenue Cycle Management with AI Workforce

Common Paper logo
W23

Common Paper

The SAFE for commercial contracts

legaltech · United States

Concourse logo
W23

Concourse

AI Agents for corporate finance teams

financial services · United States

Conduit logo
W23

Conduit

The operating system for shipping and receiving.

Constant logo
W23

Constant

AI Analysts for the Buy-Side

Coperniq logo
W23

Coperniq

Workflow software for solar & energy contractors ☀️😎

Corgi Labs logo
W23

Corgi Labs

AI to increase payment acceptance and reduce fraud for businesses

Cosine logo
W23

Cosine

Fully Agentic SWE

CreatorML logo
W23

CreatorML

Foundation Model for Human Attention

Credal.ai logo
W23

Credal.ai

The Control Plane for Enterprise Agents

DAGWorks Inc. logo
W23

DAGWorks Inc.

Open source tools & services for reliable AI Agents & AI Applications

Dashdive logo
W23

Dashdive

Break down AI and cloud costs by feature and customer

DataSuite logo
W23

DataSuite

Dataset Management for AI Trainers

Dataglade logo
W23

Dataglade

The smart way to research stocks.

David logo
W23

David

Build and host internal tools

Decohere logo
W23

Decohere

Real-time generative AI

Defer logo
W23

Defer

Zero infrastructure background processing platform.

Demospace logo
W23

Demospace

Depot logo
W23

Depot

Build faster. Waste less time.

enterprise infrastructure · United States

Designbase logo
W23

Designbase

Design and build great interfaces

Diffuse Bio logo
W23

Diffuse Bio

Generative AI for protein design

Dill logo
W23

Dill

Dill helps construction suppliers automate accounts receivable,…

Double – Coding Copilot logo
W23

Double – Coding Copilot

AI coding copilot engineered for performance

DrDroid logo
W23

DrDroid

Your best friend in production.

Dream3D logo
W23

Dream3D

Generative AI Worlds

Echo logo
W23

Echo

Founder-led sales co-pilot for B2B startups.

Edge logo
W23

Edge

The ultimate IP assistant.

EdgeBit logo
W23

EdgeBit

Autofix your software dependencies

Epsilon logo
W23

Epsilon

AI Search Engine for Academic Research

Escape logo
W23

Escape

Offensive security for the teams that are 100x outnumbered

Extend logo
W23

Extend

Production-ready document processing

technology · United States

EzDubs logo
W23

EzDubs

Real-time speech translation

Fabius logo
W23

Fabius

AI to improve Sales Calls

FactIQ logo
W23

FactIQ

Data Explorer for the US Economy

Fairway Health logo
W23

Fairway Health

AI Co-Pilot for Health Insurers to Authorize Treatment Faster

Fastgen logo
W23

Fastgen

Webflow for the Backend

Fern logo
W23

Fern

Instantly offer SDKs and API Docs

Fetchr logo
W23

Fetchr

The Personal Shopper in Your Pocket

Finic logo
W23

Finic

The AI fraud hunter

Finni Health logo
W23

Finni Health

Empowering Autism Care Providers to Go Independent

healthcare · United States

Finta logo
W23

Finta

Magically simplify accounting and taxes

Fintool logo
W23

Fintool

Financial copilot for institutional investors

Finvest logo
W23

Finvest

Easy way to buy US Treasury Bills

FlexDesk logo
W23

FlexDesk

AI Agents for corporate real estate teams

FlexWash logo
W23

FlexWash

The operating system for the car wash industry.

Flower logo
W23

Flower

Train AI on distributed data

Floworks logo
W23

Floworks

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

Frigade logo
W23

Frigade

AI-powered product assistance for modern software teams

technology · United States

Glass Health logo
W23

Glass Health

AI-Powered Clinical Decision Support & Ambient Scribing

healthcare · United States

Gluetrail logo
W23

Gluetrail

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

GoodCourse logo
W23

GoodCourse

The TikTok style corporate training platform

Gooseworks logo
W23

Gooseworks

OpenClaw-style AI coworkers for GTM teams

GovEagle logo
W23

GovEagle

AI for Government Contractors

Hadrius logo
W23

Hadrius

Automating Securities Compliance

Hammr logo
W23

Hammr

Rippling for the Construction Industry

Haven logo
W23

Haven

AI workforce for property management

Helicone logo
W23

Helicone

LLM Observability for Developers

Helios logo
W23

Helios

Create your AI workforce

Hindsight logo
W23

Hindsight

Deal Intelligence and Sales Coaching Platform

Hippo Scribe logo
W23

Hippo Scribe

AI assisted documentation for PT/OT/SLP

Homeflow logo
W23

Homeflow

Simplifying insurance for large real estate investors

Hona logo
W23

Hona

Personal Injury Legal Work - Automated

Honeydew logo
W23

Honeydew

The home for shared data logic

IcePanel logo
W23

IcePanel

Design and explain complex software architecture.

Iliad logo
W23

Iliad

AI-accelerated procedural material and texture tools.

Indexical logo
W23

Indexical

AI-powered data extraction engine

Infinia logo
W23

Infinia

Move money programmatically

Infisical logo
W23

Infisical

Unified platform for secrets, certs, and privileged access management

security · United States

Inkeep logo
W23

Inkeep

Build AI Agent teammates and automations in code or no-code

technology · United States

Interlock logo
W23

Interlock

We are still in stealth mode.

Invitris logo
W23

Invitris

Creating new protein-based drugs at scale

Invopop logo
W23

Invopop

We help global software companies comply with local tax reporting

JustPaid logo
W23

JustPaid

Billing Automation for B2B that actually works.

fintech · United States

KV Cash logo
W23

KV Cash

KV Cash, a blockchain where contracts can finally think

Keep logo
W23

Keep

The open-source AIOps platform

Kivo Health logo
W23

Kivo Health

AI-powered care for seniors with chronic disease

Koywe logo
W23

Koywe

Crypto On and Off Ramp for Latam

Kyber logo
W23

Kyber

Instantly draft, review, and send complex regulatory notices.

Laminate logo
W23

Laminate

Langfuse logo
W23

Langfuse

Open source LLM engineering platform

Latent logo
W23

Latent

Medical language models to automate healthcare operations

healthcare it · United States

Lavo Life Sciences logo
W23

Lavo Life Sciences

AI for drug formulation

Layup logo
W23

Layup

Guide your users. Right in your product.

Lightski logo
W23

Lightski

AI Agents for Enterprises

LinkGrep logo
W23

LinkGrep

AI browser copilot for teams

Linum logo
W23

Linum

type text, dream video

LiteLLM logo
W23

LiteLLM

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

Littio logo
W23

Littio

Dollar banking for people in Latin America

Loula logo
W23

Loula

Enabling birth & postpartum doulas to easily accept insurance.

Luca logo
W23

Luca

The Modern Pricing Engine for Retail

Lume logo
W23

Lume

Speed up customer implementation with AI

Lynx logo
W23

Lynx

AI platform for investigating and resolving engineering incidents

Magic Patterns logo
W23

Magic Patterns

Go from idea to production with AI.

technology · United States

Magicflow 𐂂 logo
W23

Magicflow 𐂂

The Gen AI evaluation and curation platform

MagnaPlay logo
W23

MagnaPlay

AI-powered game translation.

Mantys logo
W23

Mantys

ARR Reporting and Forecasting for SaaS companies

Matano logo
W23

Matano

Cloud Native SIEM (alternative to Splunk/Elastic)

Mercoa logo
W23

Mercoa

AI Agent for Billpay platforms to pay invoices with virtual cards

Metal logo
W23

Metal

Institutional Intelligence for Private Equity

Metal logo
W23

Metal

Metal is an AI-driven operating system for fundraising

Middleware logo
W23

Middleware

AI-based full stack observability platform

Milio logo
W23

Milio

B2B-2C real-time account to account payments

Miracle logo
W23

Miracle

Accelerate clinical trials with real-time, actionable insights

Modulari-T logo
W23

Modulari-T

We teach your immune system to attack and cure cancer

Mogara logo
W23

Mogara

Automatic software R&D capitalization

Muffin Data logo
W23

Muffin Data

Modern analytics for CPG brands

Mulligan logo
W23

Mulligan

AI automation for insurance brokerages

Nango logo
W23

Nango

A single API for all your integrations

Narrative logo
W23

Narrative

AI agents for end-to-end testing

Neptyne logo
W23

Neptyne

The programmable spreadsheet.

business software

No Cap logo
W23

No Cap

AI startup investor, No Cap

Novelcare logo
W23

Novelcare

Empowering every doctor and every patient to participate in research

Noya Software logo
W23

Noya Software

Product design tool that lets everyone design like a designer

Numeral logo
W23

Numeral

The AI-native sales tax solution.

fintech · United States

Odigos Technologies Inc. logo
W23

Odigos Technologies Inc.

Enterprise-Grade OpenTelemetry

technology · United States

OfOne logo
W23

OfOne

AI-powered order taker for restaurant drive-thrus

Ohm logo
W23

Ohm

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

Omnistrate logo
W23

Omnistrate

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

OneText logo
W23

OneText

Frictionless payments via SMS

technology · United States

Onshore logo
W23

Onshore

AI for corporate tax

OpenInt logo
W23

OpenInt

Open Source Embedded Product Integrations

OpenMeter logo
W23

OpenMeter

Usage Metering, AI & API Monetization

enterprise infrastructure · United States

OpenSight logo
W23

OpenSight

AI-powered customer support automation for fast-growing companies

Orchid logo
W23

Orchid

AI-powered EHR for independent mental health professionals

OutSail Technologies logo
W23

OutSail Technologies

Revolutionary, Modern Wing Sails

Outerbase logo
W23

Outerbase

The interface for your database

Overflux logo
W23

Overflux

Streamline EV charger installations for real estate developers

Overlord logo
W23

Overlord

AI Accountability Partner

Pair AI logo
W23

Pair AI

Reimagining education with short form video and AI

Palomma logo
W23

Palomma

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

Pando Bioscience logo
W23

Pando Bioscience

Gen-AI Designed Enzymes for Pharmaceutical Innovation

Paperplane logo
W23

Paperplane

Credit risk management platform for builders' merchants

Parabolic logo
W23

Parabolic

AI assistant for customer support

Peeba logo
W23

Peeba

Risk-free wholesale for retailers across Southeast Asia

Persana AI logo
W23

Persana AI

Sales Agents with 100+ data sources to close more deals

technology · United States

Persist AI logo
W23

Persist AI

Developing long-lasting drug formulations 50% faster

healthcare · United States

Pier logo
W23

Pier

Stripe for Credit - Trusted Credit Compliance Partner

Pierre logo
W23

Pierre

Pierre is a new, opinionated, git platform.

Pigeon logo
W23

Pigeon

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

Pirros logo
W23

Pirros

Github for Construction

PlayAI logo
W23

PlayAI

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

Pledge Health logo
W23

Pledge Health

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

Plutis logo
W23

Plutis

Pointwise logo
W23

Pointwise

App that tells you which credit cards to get and when

PoloTab logo
W23

PoloTab

Restaurant software that actually works

PoplarML logo
W23

PoplarML

Deploy Machine Learning Models with One Command

Proglix logo
W23

Proglix

B2B Marketplace for Steel Raw Materials

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Which family offices back YC companies?

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