YC S23 201 startups

YC S23 Startups

Every Y Combinator Summer 2023 company we currently index.

Last updated

2026-07-17

Hiring right now 2% 5 of 201

Open roles 30

Most-hired discipline Engineering

The Y Combinator S23 batch (Summer 2023) brought 201 tech startups into our index. This page lists every S23 company we currently track, with logos, taglines, and links straight to their own sites — no paywalled middleman. Notable S23 companies include Accend, Affinity, AgentCollect, Agentive, and Aglide. Each profile surfaces team size, founding year, location, and open roles when their careers page is publicly scrapable. The S23 cohort skews toward AI / ML, Dev Tools, and Healthcare — common patterns we see in this batch. Recurring tags across these companies: Artificial Intelligence, AI, B2B, SaaS, Developer Tools. The directory's filter UI accepts any of them as a query. Geographically, the S23 batch we have leans toward San Francisco, New York, and New York City, with the rest spread across remote-first teams and other hubs. and the listing refreshes whenever the scrape runs, so changes propagate without a manual edit.

Accend

AI agents for commercial underwriting at banks and fintechs

FintechGenerative AIFinance

A compliance training platform built for regulated industries.

FintechWorkflow AutomationTeam Collaboration

B2B debt collection powered by AI agents

Artificial IntelligenceFintechB2B

AI Workspace for Audit & Advisory Firms

Connect every disconnected app to your SSO.

Wholesale marketplace for food & beverage

AI sales prospecting. Replace your SDR with AiSDR

Artificial IntelligenceSaaSB2B

Superhuman video production as a service

AI-Native CPQ & Billing for Modern Pricing Models

Autonomous surgical robots

Artificial IntelligenceHard TechMachine Learning

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

A stream of engineering candidates who ship.

Artificial IntelligenceGenerative AIB2B

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

Developer ToolsSaaSData Engineering

Infuse knowledge into language models with just 10 samples

AIOpsDeep LearningDeveloper Tools

AI agents reliable enough to do real work

Artificial IntelligenceProductivityEnterprise

Observability and evaluation platform for LLM apps.

AIOpsArtificial IntelligenceDeveloper Tools

Hard TechComputer VisionAI

The enterprise platform for AI phone calls

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

AI-native operations for the banks

Artificial IntelligenceFintechPayments

AI for ASIC Design Verification

Artificial IntelligenceB2BEnterprise Software

AI Agents for Healthcare RCM

Artificial IntelligenceHealth TechHealthcare

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

ProductivityBig DataAutomation

The AI Native ERP for the fastest growing companies.

Headcount & Compensation Management

Helping businesses in emerging markets make pay their international…

Automating lenders' interactions with the DMV

Enterprise SoftwareConsumer FinanceAutomation

Get Paid for Family Caregiving

Consumer Health ServicesHealthcareHealth Insurance

Build your GTM workforce

Artificial IntelligenceConversational BankingFintech

The AI-powered risk decision platform

Machine LearningFinanceAnalytics

AI agents that automate AP, procurement, and finance

FintechFinanceData Engineering

Fast, reliable, reproducible AI with GPU live migration

Deep LearningDeveloper ToolsCloud Computing

AI for legal & government

AI powered HR and Recruitment for people teams

Marketplace to book doctors and avoid surprise bills

Dead simple LLM testing and iteration

AIOpsDeveloper ToolsGenerative AI

India's first UPI wallet for foreign nationals and NRIs

Asset Light Chipotle for Africa

ConsumerRestaurant TechFood

AI revenue recovery for underpaid healthcare claims.

Dual Currency Accounts For LatAm

FintechLatin AmericaRemittances

AI back office for food product quality teams

AIOpsArtificial IntelligenceB2B

Building the next Procore

Pioneering open-source coding agent

Artificial IntelligenceDeveloper Tools

AI voice agents for healthcare operational calls

Artificial IntelligenceB2BWorkflow Automation

All-in-one marketing measurement for B2C

SaaSAnalyticsE-commerce

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

Artificial IntelligenceDeveloper ToolsGenerative AI

Corgea finds, and fixes insecure code and packages autonomously.

Developer ToolsSaaSSecurity

Digital-native home painting franchise

ProptechHome ServicesHome Automation

Embed charts, dashboards and exports in your app

AnalyticsData EngineeringDatabases

Metadata for GenAI workflows

Artificial IntelligenceData LabelingBig Data

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

Artificial IntelligenceSaaSDigital Health

AI Agents for Enterprises

Artificial IntelligenceB2BAI

Automating PWA Compliance and Diligence

Artificial IntelligenceFintechB2B

AI agents for fintech risk and compliance operations

FintechComplianceFraud Prevention

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

Automate your chargebacks with AI agents

Artificial IntelligenceSaaSPayments

AI contract repository

Claims infrastructure for African health insurance

FintechHealth InsuranceInfrastructure

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

AI Customer Service Agents for trades and field services

Artificial IntelligenceSaaSB2B

ML to predict and prevent pregnancy complications

Health TechDigital HealthWomen's Health

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

Generative AIMachine LearningConsumer Health Services

Budgeting app with built-in banking

FintechConsumerNeobank

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

Banking + Payroll/Benefits + Bookkeeping + Tax in one place

Open Jobs —

Team 12

Founded 2023

Feanix Biotechnologies

Farm Genetics Made Easy - Using DNA and Software

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

Generative AISaaSRecruiting

AI enabled marketplace matching trucks with jobs

Stripe for HSA/FSA payments

FintechMarketplaceHealth & Wellness

Personalized learning built for schools

EducationGenerative AIEdtech

Open source GenAI development platform

Artificial IntelligenceDeveloper ToolsGenerative AI

TurboTax for Medicaid

Health TechHealthcareHealthcare IT

Shopify for Homebuilders

Turn manual operations into scalable processes

AI Support Agent for Enterprises.

Artificial IntelligenceAI

Build games at the speed of thought

Generative AIConsumerEntertainment

Automating Data Entry for Clinical Trials

Artificial IntelligenceBiotechHealthcare

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

Developer ToolsCrypto / Web3B2B

AI-powered forecasting & replenishment for grocery

GroceryMachine LearningClimate

Intelligence that runs your operations.

LogisticsAI Assistant

Using generative AI to call insurance for healthcare clinics

Navigating patients to the right place, first time.

Health TechWorkflow AutomationDigital Health

Open source tools for developing generative AI applications

Your first security hire

Developer ToolsB2BInfrastructure

The operating system for inbound B2B revenue

Small unmanned hydrogen airships for long range monitoring

Hydrogen EnergyB2BClimate

Revenue Activation Platform

AI-Enhanced LearningB2BSales

Your junior AI product manager

Artificial IntelligenceGenerative AIB2B

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

Artificial IntelligenceDeveloper ToolsAnalytics

AI timekeeping for legal professionals.

AI Agents For RFP and Questionnaire Response Automation

The fastest way to build AI assistants on technical content

Artificial IntelligenceGenerative AIAI

Generative AIConsumerProductivity

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

Artificial IntelligenceEntertainmentVideo

Screen recorder for stunning product demo videos

AI-powered risk and compliance for financial institutions

Banking as a ServiceFintech

The all-in-one AI platform for companies.

Artificial IntelligenceAI

Empowering B2B sellers with AI-powered training, coaching, and content

AI-native customer support platform

Customer ServiceCustomer SupportAI

Virtual Care for Type 2 Diabetes Reversal

Health TechTelehealthHealthcare

AI Copilot for Shippers, Carriers and Brokers

Open Jobs —

Team 3

Founded 2023

Lio (formerly askLio)

The World's First Multi-Agent System for Procurement

Program computers with natural language

Generative AIConsumerProductivity

Drive leads with SEO and AEO.

AI Supply Chain Coordinator

LogisticsManufacturingSupply Chain

POS & operating system that makes liquor stores more money

The AI Platform for Life Sciences Intelligence

Generative AIBiotechHealthcare

Search engine for trustworthy medical information.

Artificial IntelligenceGenerative AIConsumer Health Services

Firmware cybersecurity

DevSecOpsHardwareGovTech

AI SRE For Teams on Kubernetes

Developer ToolsKubernetesDevOps

Higher resolution MRI with faster scan times.

Computer VisionMedical DevicesHealthcare

Turn product features into launch videos

DesignDesign ToolsVideo

Artificial IntelligenceB2BAPI

Build and publish web apps in minutes. No coding required.

Artificial IntelligenceNo-codeWeb Development

Fast Models Optimized for Coding Agents

Artificial IntelligenceDeveloper ToolsGenerative AI

Deliver genes to any cell with AI

AI-powered Drug DiscoveryNanomedicineBiotech

Manage energy cost & usage with AI for facility & sustainability teams

AI-native platform for corporate meetings and events

Artificial IntelligenceB2BLogistics

Engineering a future without cancer deaths.

Machine LearningBiotechHealthcare

CRM Co-Pilot for Medtech Sales

B2BMedical DevicesHealthcare

Genetically engineering plants for disease resistance.

Synthetic BiologyBiotechClimate

Combination therapeutics for the world's toughest diseases

Turn expensive prompts into cheap fine-tuned models

AIOpsArtificial IntelligenceOpen Source

Specialized agents for real work

Artificial IntelligenceRobotic Process AutomationB2B

The API for LLM tool use

The AI Platform for Medical Education

Artificial IntelligenceEducationHealthcare

Tracking methane emissions with satellites

Artificial IntelligenceSatellitesAnalytics

Speed up materials innovation with Artificial Intelligence

AI-powered user interviews

SaaSB2BMarket Research

Simple, Elastic-quality search for Postgres

Developer ToolsAnalyticsOpen Source

Test, evaluate & observe your LLM applications

Developer ToolsGenerative AISaaS

Fast, native ETL for Postgres 🐘 🚀

Developer ToolsOpen SourceData Engineering

Close deals faster with AI for contract negotiation

Artificial IntelligenceB2BLegal

Earn and redeem credit card points for free flights

Artificial IntelligenceFintechConsumer

The AI platform for CRE investment teams

Machine LearningSaaSReal Estate

AI Phone Agents for Healthcare Operations

Health TechB2BHealthcare

Agentive assurance system for auditors, risk consultants, and clients.

Marketplace for Rare Coins & Precious Metals

AI-Powered Medical Billing

Artificial IntelligenceHealthcareHealth Insurance

RankAI grows your website on autopilot

Artificial IntelligenceSaaSB2B

Learn language with real-world content, at your level

AI-Enhanced LearningEducationeLearning

AI Compliance Platform for Healthcare Organizations

B2BComplianceHealthcare

The open source Postman alternative.

Developer ToolsOpen SourceAPI

Open-source Retool for enterprise

Developer ToolsOpen SourceWeb Development

Build a website by chatting with AI

AI-Powered Customer Segmentation for eCommerce

The simplest way to extract web data at scale

Artificial IntelligenceGenerative AIB2B

Low-false-positive intrusion detection for remote outdoor sites

Machine LearningComputer VisionB2B

Flight search engine using credit card points and miles

Artificial IntelligenceSaaSTravel

Artificial IntelligenceB2BSales

Proof of Human - invisible human verification

AI agents for risk, compliance, and safety

FintechComplianceTrust & Safety

All-in-one POS for liquor stores

Your 24/7 AI Recruiter

Artificial IntelligenceRecruitingHR Tech

The GPU Cloud Marketplace

AI calling & browser agents for healthcare

Health TechDigital HealthHealthcare

AI research lab for retrieval

Artificial IntelligenceInfrastructureAI

The copilot for chip designers

Artificial IntelligenceDeveloper ToolsB2B

We get patients to their next appointment

Artificial IntelligenceSaaSHealth Tech

Instant 3D Digital Twins for Smarter Real Estate.

Artificial IntelligenceComputer VisionReal Estate

Open Source AI Agent to automate browser workflows via an API

Artificial IntelligenceRobotic Process AutomationWorkflow Automation

Recover payment failures and maximize subscription Revenue

Artificial IntelligenceFinOpsSaaS

Send texts your customers actually want over RCS

AI-powered insurance verification to boost patient conversion.

Artificial IntelligenceHealth TechDigital Health

Copilot for Robotic Process Automation

Artificial IntelligenceRobotic Process AutomationWorkflow Automation

AI patent drafting, prosecution, litigation and more for legal teams.

Manage a swarm of AI agents to get real work done

Artificial IntelligenceGenerative AISaaS

We help people with chronic insomnia sleep better, using psychology.

AI agents that run insurance operations

Artificial IntelligenceSaaSB2B

The publishing layer for the agentic internet

Artificial IntelligenceDeveloper ToolsSearch

An AI math tutor for every student

AI-Enhanced LearningEducationConsumer

AI-driven Retention Automation for subscription media businesses.

Machine LearningB2BEnterprise Software

orchestrate your coding agents with sudocode

Artificial IntelligenceDeveloper ToolsGenerative AI

Building the AI-powered marketing ops platform that turns website…

SalesMarketingAdvertising

The best AI coding assistant for JetBrains

Artificial IntelligenceDeveloper ToolsAI Assistant

AI for Government Contracting.

Low cost securities-backed lending for financial advisors and HNWI

Event extraction for Medical Researchers

Artificial Intelligence

Visual Editor for React, powered by AI

Artificial IntelligenceDeveloper ToolsB2B

Plaid for Telematics Data in Commercial Trucking

Developer ToolsLogisticsAPI

AI-powered Infrastructure as Code PR reviews

Artificial IntelligenceDeveloper ToolsDevOps

The open-source document editor for humans and AI agents.

Artificial IntelligenceDeveloper ToolsOpen Source

Infrastructure for managing GPU clusters for training/serving.

Developer ToolsMachine LearningSaaS

A construction payroll platform designed for same-day pay.

FintechSaaSConstruction

The UI toolkit for Dashboards

Data VisualizationWeb Development

We show couriers where to park and enter a building.

Artificial IntelligenceDeliveryLogistics

ai revenue engine for service businesses

Artificial IntelligenceSalesSales Enablement

The first inbox designed for humans and agents

Digital banking platform for the 30 million smartphone users in DRC.

AI Operating System for Private Market Investors

Artificial IntelligenceGenerative AIFinance

The compliant AI colleague for sales teams in Europe

Artificial IntelligenceSales

AI Scribe for veterinarians. Saving time and improving patient care.

Artificial IntelligenceGenerative AIHealth Tech

AI-powered McKinsey-quality reports in seconds

AI Voice and SMS Agents for Healthcare

Artificial IntelligenceSaaSHealthcare

Long-horizon research agents

Artificial IntelligenceGenerative AIConsumer

Close your outdated dependency attack vector

Artificial IntelligenceSecurityCybersecurity

The Data Platform for Mission‑Critical Systems

Hard TechManufacturingData Visualization

Open Jobs —

Team 3

Founded 2023

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Frequently asked questions

What is the YC S23 batch?

S23 is the Y Combinator batch code for the Summer 2023 cohort. Companies joining a YC batch go through a 3-month program in California and demo their product at the end. techstartupslist.com indexes 201 tech startups from this batch.

How many companies are in YC S23?

Our index currently tracks 201 active tech startups from the YC S23 batch. New companies appear here automatically when our daily scraper finds them; companies that shut down are flagged inactive and hidden from listings.

Which companies graduated from YC S23?

Among the S23 companies indexed here: Accend, Affinity, and AgentCollect, and 198 more on this page. Click any profile for category, team size, founding year, and open roles.

Where can I find open jobs at YC S23 startups?

Open roles from indexed S23 companies appear on our /jobs page, aggregated alongside roles from other indexed startups. Each role links directly to the company's official application page.

How often is the YC S23 page updated?

Automated scrapers refresh this page daily. The last index update was 2026-07-17. Inactive companies fall out of the count automatically — we don't keep dead listings live.

YC S23 Startups

About YC S23

Five standout startups, five open roles, every Monday

Frequently asked questions