Y Combinator companies

The Y Combinator portfolio as the radar sees it: synced daily, classified into clusters, checked for life and movement. 6,198 companies.

CompanyClusterProgramStatusLast signal
ProjectXAI

Agent native workspace for heavy parallel workflows on the web

Agent infrastructureParallel multi-agent OS infrastructureY CombinatorX26Activechecked 2026-08-23
Prototyping.ioAI

Autonomous manufacturing for mechanical parts

Robotics and physical worldAI-driven manufacturing automationY CombinatorX26Activechecked 2026-08-23
qomplementAI

The Agentic ERP for supply chain operations

Vertical AI agentsagentic ERP for supply chain operationsY CombinatorX26Activechecked 2026-08-23
RASPIREAI

Autonomous Runtime Security

Security and complianceAI-powered runtime threat detectionY CombinatorX26Activechecked 2026-08-23
ReasonBlocksAI

The runtime layer that makes AI agents cheaper and more reliable

Agent infrastructureAI agent runtime optimizationY CombinatorX26Activechecked 2026-08-23
Regbase

Automating Corporate Compliance, Worldwide

Security and complianceCompliance automation platformY CombinatorX26Activechecked 2026-08-23
RentAHumanAI

Marketplace for AI agents to hire humans.

Agent infrastructureAI agent workforce marketplaceY CombinatorX26Activechecked 2026-08-23
ReplicasAI

Run any coding agent harness in the cloud

Agent infrastructureAI agent orchestration and executionY CombinatorX26Activechecked 2026-08-23
Result

Where new internet entrepreneurs build and run their companies

B2B SaaSAll-in-one platform for startup foundersY CombinatorX26Activechecked 2026-08-23
RevnuAI

The growth infrastructure for the autonomous business

Vertical AI agentsAI growth and GTM automationY CombinatorX26Activechecked 2026-08-23
River Markets

Prime brokerage for prediction markets

Fintechprediction markets prime brokerageY CombinatorX26Activechecked 2026-08-23
RudusAI

AI Takeoffs for Concrete

Vertical AI agentsAI takeoff estimation for concrete contractorsY CombinatorX26Activechecked 2026-08-23
RuntimeAI

Build and run internal agents, without managing the infrastructure

Agent infrastructurecoding agent orchestration and governanceY CombinatorX26Activechecked 2026-08-23
Saffron

Helping your company find 10x engineers.

Developer toolsAI-assisted engineering evaluationY CombinatorX26Activechecked 2026-08-23
SalesgraphAI

Proactive revenue agents that move enterprise deals forward

Vertical AI agentsRevenue automation for enterprise salesY CombinatorX26Activechecked 2026-08-23
Saudara AIAI

AI Native Sourcing Broker For Overseas Manufacturing

Commerce and marketplacesAI-powered manufacturing sourcing and procurementY CombinatorX26Activechecked 2026-08-23
SavantAI

Company brain every AI-native enterprise runs on

Agent infrastructureKnowledge management for AI agentsY CombinatorX26Activechecked 2026-08-23
SazabiAI

The AI-native observability platform for fast-moving engineering teams

AI infra and computeAI-native observability and monitoringY CombinatorX26Activechecked 2026-08-23
ScopeAI

We help software companies get discovered and used by AI agents

Developer toolsAI agent discoverability and optimizationY CombinatorX26Activechecked 2026-08-23
SherpaAI

Make websites improve themselves.

B2B SaaSAI-powered conversion optimization platformY CombinatorX26Activechecked 2026-08-23
shotwell.aiAI

Annotations for robotics data

Data for AIRobotics data annotation and QAY CombinatorX26Activechecked 2026-08-23
SilmarilAI

Security for agents that self-improves

Agent infrastructureAI agent security and monitoringY CombinatorX26Activechecked 2026-08-23
SmartbaseAI

AI-native ERP for manufacturers

B2B SaaSAI-native ERP for manufacturersY CombinatorX26Site unreachablechecked 2026-08-17
smol machines

Ship software faster with portable, self contained virtual machines.

Developer toolsportable VM containerization for developersY CombinatorX26Activechecked 2026-08-23
SoriaAI

AI Financial Research Terminal built for Healthcare (and beyond)

FintechAI research terminal for healthcare investorsY CombinatorX26Activechecked 2026-08-23
StableBrowseAI

Building the Data Infrastructure layer for Physical AI.

Agent infrastructureModel evaluation and testing infrastructureY CombinatorX26Activechecked 2026-08-23
StageAI

Code review platform for humans and agents

Developer toolsAI-aware code review platformY CombinatorX26Activechecked 2026-08-23
Standard SignalAI

Hedge fund where AI researches and executes every trade end-to-end

FintechAI-powered hedge fundY CombinatorX26Activechecked 2026-08-23
StandoutAI

Agentic hiring marketplace

Vertical AI agentsagentic hiring marketplaceY CombinatorX26Activechecked 2026-08-23
SuperlogAI

Make software self-healing

Developer toolsAI-native observability and auto-remediationY CombinatorX26Activechecked 2026-08-23
SupersetAI

Building self-improving software

Developer toolsIDE for AI coding agentsY CombinatorX26Active2026-08-14
Surtr Defense Systems

The hardware-agnostic operating system for drone defense

Defense and spaceCounter-UAS OS and threat fusionY CombinatorX26Activechecked 2026-08-23
Synphony

robots & software for farms

Robotics and physical worldautonomous agricultural harvesting robotsY CombinatorX26Activechecked 2026-08-23
TaigaAI

Autonomous medical billing

Vertical AI agentsAI medical billing automationY CombinatorX26Activechecked 2026-08-23
TakeCareOSAI

AI-native operating system for long term care providers

Vertical AI agentsAI operating system for long-term care providersY CombinatorX26Activechecked 2026-08-23
TaskletAI

Agents that own the work

Horizontal AI assistantsAI agents for workflow automationY CombinatorX26Activechecked 2026-08-23
tday.comAI

AI that turns your product into on-brand marketing content

Vertical AI agentsAI content generation for product marketingY CombinatorX26Activechecked 2026-08-23
Tenet Industries

Low-cost, mass-producible defense systems

Defense and spacemass-producible attack dronesY CombinatorX26Activechecked 2026-08-23
TesterArmyAI

Test your app with AI, catch bugs before users do

Vertical AI agentsAI testing agent for software developmentY CombinatorX26Activechecked 2026-08-23
The Company CompanyAI

The last agent your company will ever need.

Agent infrastructureAgent orchestration and company infrastructureY CombinatorX26Activechecked 2026-08-23
ThomasAI

The first AI founder: a virtual human who runs his own companies.

Horizontal AI assistantsAI founder agent for businessY CombinatorX26Activechecked 2026-08-23
TolmoAI

Tolmo is the AI security platform that secures every layer of cloud…

Security and complianceAI-driven cloud security agentsY CombinatorX26Activechecked 2026-08-23
Totalis

derivative layer for prediction markets

Fintechprediction market derivativesY CombinatorX26Activechecked 2026-08-23
transloadAI

Measure freight with security cameras

Commerce and marketplacesfreight measurement via computer visionY CombinatorX26Activechecked 2026-08-23
TrellisAI

Agents that run short-term rental operations end-to-end

Vertical AI agentsShort-term rental operations agentsY CombinatorX26Activechecked 2026-08-23
TwolabsAI

Humanoid robot platform for builders.

Robotics and physical worldHumanoid robot training platformY CombinatorX26Activechecked 2026-08-23
Uno Wallet

The AI mobile wallet that replaces Apple Pay

FintechAI-powered mobile payments walletY CombinatorX26Activechecked 2026-08-23
UserlensAI

Agents that renew and expand six and seven-figure enterprise software

Vertical AI agentsAI customer success manager for enterprisesY CombinatorX26Activechecked 2026-08-23
ValCtrlAI

ValCtrl is building the only intelligent prediction market

Fintechintelligent prediction marketsY CombinatorX26Activechecked 2026-08-23
VoquillAI

The agentic OS for medical labs

Vertical AI agentsAI OS for medical labsY CombinatorX26Activechecked 2026-08-23
WalterAI

AI Employee for Manufacturing Operations

Vertical AI agentsAI operations agent for manufacturingY CombinatorX26Activechecked 2026-08-23
WatoAI

The control point for AI agents at work.

Agent infrastructureAI agent orchestration and memoryY CombinatorX26Activechecked 2026-08-23
WealorAI

AI-native platform for wealth managers

Vertical AI agentsAI wealth management platformY CombinatorX26Activechecked 2026-08-23
YouArtAI

Patreon for AI Originals

ConsumerAI creator funding platformY CombinatorX26Activechecked 2026-08-23
ZenbuAI

The extensible IDE for coding agents

Agent infrastructureIDE for orchestrating coding agentsY CombinatorX26Active, new domain2026-08-23
Zibra Labs

Distributed runtime for AI workloads at scale

AI infra and computedistributed compute for AI workloadsY CombinatorX26Activechecked 2026-08-23
ZolvoAI

AI Back-Office Automation for Commercial Lenders

Vertical AI agentsAI back-office automation for commercial lendersY CombinatorX26Activechecked 2026-08-23
/dev/fastAI

/dev/fast is the AI-native code forge

Developer toolsAI-native code generation and reviewY CombinatorW26Activechecked 2026-08-23
10x ScienceAI

The AI-native platform for next-generation protein characterization.

Healthcare and bioAI protein characterization for drug developmentY CombinatorW26Activechecked 2026-08-23
21st

UI building blocks for the agentic internet

Developer toolsReact components for AI agentsY CombinatorW26Activechecked 2026-08-23
AemonAI

The Forward-Deployed AI Research Engineer

Vertical AI agentsautonomous AI research engineerY CombinatorW26Activechecked 2026-08-23
Agentic FabriqAI

The control plane for AI agents.

Agent infrastructureAI agent access control and identityY CombinatorW26Activechecked 2026-08-23
Alt-XAI

Building the best venue for private markets exposure.

FintechAI-powered private markets liquidityY CombinatorW26Activechecked 2026-08-23
Anchorhead

Fractional buyer for hardware companies in critical industries

B2B SaaSFractional procurement for hardware manufacturersY CombinatorW26Inactivechecked 2026-08-17
ApproximaAI

Your software should build itself.

Vertical AI agentsAI agents for software developmentY CombinatorW26Activechecked 2026-08-23
ARC Prize FoundationAI

AI benchmarks that measure general intelligence and inspire new ideas

Data for AIAI benchmarking and evaluationY CombinatorW26Activechecked 2026-08-23
AshrAI

Automated Multi-Modal Testing for Agents

Agent infrastructureAI agent testing and evals platformY CombinatorW26Activechecked 2026-08-23
Asimov

Real-world human movement data for humanoid robots

Robotics and physical worldhumanoid robot training dataY CombinatorW26Activechecked 2026-08-23
Aurorin CADAI

Claude code for Mechanical Engineers

Developer toolsAI-native CAD for mechanical engineersY CombinatorW26Activechecked 2026-08-23
AutoSituAI

AI-native workspace for development plan reviews

Vertical AI agentsAI agents for municipal development reviewY CombinatorW26Activechecked 2026-08-23
Autumn AI

Stalk your prospects at scale.

B2B SaaSSales intelligence and intent signalsY CombinatorW26Active, new domain2026-08-23
AvoiceAI

Harvey for Architecture

Vertical AI agentsAI automation for architecture firmsY CombinatorW26Activechecked 2026-08-23
AxionOrbital SpaceAI

Foundation models for 24/7 Earth Observation

AI infra and computeFoundation models for satellite imageryY CombinatorW26Activechecked 2026-08-23
AxisAI

An AI Copilot for Trading Desks

Vertical AI agentsAI trading assistant for commoditiesY CombinatorW26Activechecked 2026-08-23
BalanceAI

Full-Stack AI Accounting

Vertical AI agentsAI accounting and bookkeeping for SMBsY CombinatorW26Activechecked 2026-08-23
BaseFrameAI

Detect what AI can automate for your team

Horizontal AI assistantsWorkflow automation discovery platformY CombinatorW26Site unreachablechecked 2026-08-17
Beacon HealthAI

AI Employees for Primary Care

Vertical AI agentsAI automation for primary care workflowsY CombinatorW26Activechecked 2026-08-23
BeeSafe AIAI

Frontier AI Defenses for Social Engineering Attacks

Security and complianceAI defense against social engineeringY CombinatorW26Activechecked 2026-08-23
Beyond Reach Labs

Space solar arrays that grow to the size of a football field in orbit

Defense and spaceSpace solar power generationY CombinatorW26Activechecked 2026-08-23
BidflowAI

AI Takeoffs for Electrical

Vertical AI agentsAI bidding for electrical contractorsY CombinatorW26Activechecked 2026-08-23
Booko

Dynamically pricing the whole economy.

B2B SaaSdynamic pricing for bookable servicesY CombinatorW26Activechecked 2026-08-24
Brumby (Formerly GrazeMate)AI

Robot Cowboys that Herd Cattle with AI Drones

Robotics and physical worldautonomous herding drones for livestockY CombinatorW26Active-
Bubble Lab

Operating system for premium professional communities

B2B SaaSCommunity management platform for professionalsY CombinatorW26Activechecked 2026-08-23
BurtAI

AI teammates for logistics

Vertical AI agentsAI agents for freight brokersY CombinatorW26Activechecked 2026-08-24
Button ComputerAI

The tiny computer built for voice AI.

Robotics and physical worldVoice AI wearable hardwareY CombinatorW26Activechecked 2026-08-23
Byteport

Global upload acceleration for 1GB-100TB files.

Agent infrastructureFile transfer acceleration infrastructureY CombinatorW26Activechecked 2026-08-23
CajalAI

Scaling formal verification to accelerate scientific discovery

Vertical AI agentsAI mathematicians for formal verificationY CombinatorW26Activechecked 2026-08-23
CanaryAI

The first AI QA engineer that understands your code

Developer toolsAI-powered QA and testing automationY CombinatorW26Activechecked 2026-08-23
CaptainAI

Accurate, high-performance retrieval for AI agents

Data for AIMultimodal retrieval infrastructure for AI agentsY CombinatorW26Activechecked 2026-08-23
CardboardAI

Agentic video editor

Vertical AI agentsAI video editing for marketing teamsY CombinatorW26Activechecked 2026-08-23
CardinalAI

Revenue Agents for GTM teams

Vertical AI agentsRevenue agents for GTM teamsY CombinatorW26Activechecked 2026-08-23
CarettaAI

Realtime AI for Sales Calls

Horizontal AI assistantsAI sales call assistantY CombinatorW26Activechecked 2026-08-23
Carrot LabsAI

AI Cost Management: Track and attribute AI spend across every provider

AI infra and computeAI spend management and optimizationY CombinatorW26Activechecked 2026-08-23
CascadeAI

Distilling Proprietary Intelligence

AI infra and computeModel fine-tuning and optimizationY CombinatorW26Activechecked 2026-08-17
CatchBack Cards

The most thrilling way to create and rip digital collectible packs

Consumerdigital collectible trading platformY CombinatorW26Activechecked 2026-08-23
CellTypeAI

The agentic drug company. We simulate human biology.

Vertical AI agentsAI agents for drug discoveryY CombinatorW26Activechecked 2026-08-23
ChamberAI

The AIOps Agent for ML Teams

Agent infrastructureAIOps agents for ML infrastructureY CombinatorW26Activechecked 2026-08-23
ChasiAI

AI Revenue Engine for the Equipment Industry

Vertical AI agentsAI sales agents for equipment dealersY CombinatorW26Activechecked 2026-08-23
ClaimGlideAI

AI automated prior-auths for private medical practices

Vertical AI agentsAI prior-authorization automation for practicesY CombinatorW26Activechecked 2026-08-23
CodeWispAI

Anyone can create real games with AI

Developer toolsAI game development platformY CombinatorW26Activechecked 2026-08-24