Top accelerator startups

Startups14,448Programs29

14,448 startups · 29 programs

YC B2B

1,163 companies · 924 active · 63% AI · most in S21 (102)

Companies tagged B2B

AIPlyxlThe workspace that does the workYC W27Startup →AIRoteAI-native insurance department for auto body shopsYC W27San FranciscoStartup →AI0.securityThe autonomous cybersecurity teamYC F26San FranciscoStartup →AIAgent 37Cloud Sandbox for AgentsYC F26New York CityStartup →AIApplied KineticsAI-native manufacturing for data center and energy projectsYC F26San FranciscoStartup →AIAucertA team of expert AI agents that test mobile apps on their own.YC F26San FranciscoStartup →AIBayworksIntelligence that keeps America’s vehicles runningYC F26San FranciscoStartup →AIBoxes.devA better place to run your coding agents.YC F26San FranciscoStartup →AIClaimKitAI-native tax firmYC F26San FranciscoStartup →AICoveraAI-native OS for insurance brokersYC F26San FranciscoStartup →AIDatabuddyAI Data Analyst for fast-growing teamsYC F26San FranciscoStartup →AIDecentYour health plan should get better year-round. Not just once a year.YC F26San FranciscoStartup →AIDeepMarkA live watermark inside AI voice that survives phone callsYC F26San FranciscoStartup →AIElithiaAgents for the medical review behind every claimYC F26San FranciscoStartup →AIEpsilabLong horizon RL environments from real-life dataYC F26San FranciscoStartup →AIFaradayIndustrial aOS coordinating humans, agents, and machinesYC F26San FranciscoStartup →AIFleetyFleety is an AI dispatcher for plumbing and HVAC companies.YC F26San FranciscoStartup →AIForwardThe private credit network for leading debt advisorsYC F26San FranciscoStartup →AIGodHandsTurn how your team works into playbooks and agents.YC F26San FranciscoStartup →AIGradonLegora for AEC (Architecture, Engineering, & Construction) firmsYC F26San FranciscoStartup →AILarkAI agents that automate workflows for distributorsYC F26San FranciscoStartup →AIMirrorsFix recurring AI agent mistakes with real-time guidanceYC F26San FranciscoStartup →AINeomatterAI that works for in-house legal teamsYC F26San FranciscoStartup →AIObiaAI-native commercial real estate brokerageYC F26San FranciscoStartup →AIOpenScaffoldSuperagent for Deployment TeamsYC F26San FranciscoStartup →AIPapayaContinuously improve the quality of your AI agents.YC F26San FranciscoStartup →AIPerceptual LabsBuilding the next generation of visual intelligenceYC F26San FranciscoStartup →AIPlover LabsEnable enterprises to ship agent code without human reviewYC F26San FranciscoStartup →AIPomeradoTurn any website into an MCP for your agents, in minutesYC F26San FranciscoStartup →AIPreloadSensorimotor context for physical AIYC F26San FranciscoStartup →AIRisklyticsAI-Native Insurance for Frontier TechYC F26San FranciscoStartup →AIRouterPlusMarketplace for AI inference: the right model at the best priceYC F26BengaluruStartup →AIRysticTrain models and test agents in high-fidelity simulated environmentsYC F26San FranciscoStartup →AISaccadeWorld's Earliest Test for Alzheimer's BiomarkersYC F26San FranciscoStartup →AISintropixAutonomous accounting platform for global companiesYC F26SantiagoStartup →AISona8Voice agents survey employees to map, improve & automate workflowsYC F26San FranciscoStartup →AITilionSuper fast, unblockable browser infra for agentsYC F26San FranciscoStartup →AIWorkers IOSimulation environments for verifying mission-critical softwareYC F26San FranciscoStartup →OtherAerogen SystemsModernizing Chip Manufacturing InfrastructureYC S26Ann ArborStartup →AIAkon LabsDatabricks for Enterprise CodebasesYC S26San FranciscoStartup →AIAmorphic LabsOpenRouter for Agent ToolsYC S26San FranciscoStartup →AIAsyncAI agents that run businessesYC S26New York CityStartup →AIBillow AI LabsAI-native Accounting Firm that's killing DeloitteYC S26San FranciscoStartup →AICarSignalThe AI Operating System for Auto Shops.YC S26San FranciscoStartup →AICOACHThe AI Coach for in person sales reps.YC S26San FranciscoStartup →AIConiferIntelligent decisions for critical AI operationsYC S26San FranciscoStartup →AIContext.devWeb data API for agentsYC S26San FranciscoStartup →AIDecaworkTraining company-specific models that approve AI actions.YC S26San FranciscoStartup →AIDialogusvoice AI agents that learn how your company actually worksYC S26San FranciscoStartup →AIDockAI agents that run your business.YC S26San FranciscoStartup →AIDreamUsing VLMs to Catch DamageYC S26San FranciscoStartup →AIEdviroAI That Operates Energy InfrastructureYC S26San FranciscoStartup →AIFamiliarMultimodal TranslationYC S26TorontoStartup →AIGitCafeThe Git forge for the next hundred billion commitsYC S26San FranciscoStartup →AIGlenInstitutional Learning Layer for Every Agent in Your CompanyYC S26San FranciscoStartup →AIHERAAgents for IndustrialsYC S26San FranciscoStartup →AIHubbleAI-native retrieval engine for medical recordsYC S26SeattleStartup →OtherKaraMaking Diamond SemiconductorsYC S26San FranciscoStartup →AIKebraAI For The Skilled WorkforceYC S26San FranciscoStartup →AILamb LabsLightning fast chips with hardcoded AI modelsYC S26San FranciscoStartup →AILATOPredict how market participants behaveYC S26San FranciscoStartup →AILevocred AIAI Workforce for lendersYC S26San FranciscoStartup →AILuca IQAPI-first tax engine for CPA firms and developersYC S26San FranciscoStartup →AIMaingenSimulating Agents Running Industrial CompaniesYC S26San FranciscoStartup →AIMarkerPlatform + FDEs that rebuild enterprises agent-firstYC S26San FranciscoStartup →AINebuSecAutonomous AI defense system for cyber attackYC S26San FranciscoStartup →AINeuromorphicBuilding robots to automate wetlabsYC S26San FranciscoStartup →AIOneCLIAI teammates for your business-critical work.YC S26Tel Aviv-YafoStartup →AIOpenTagModel Agnostic AI coworker in SlackYC S26San FranciscoStartup →AIOS3Affordable, intelligent humanoid robots built to deploy at scaleYC S26San FranciscoStartup →AIOsseusData research lab for aligned health and biological AIYC S26LondonStartup →AIPalisadeAI that finds and fixes OS-level vulnerabilities across device fleetsYC S26San FranciscoStartup →AIPerceptron MLWe make law firms AI-native.YC S26San FranciscoStartup →AIPetrarchAdvancing model capabilities for critical infrastructureYC S26San FranciscoStartup →AIPoth LabsThe customer brain that connects data to explain customer behaviorYC S26San FranciscoStartup →AIPrescience, Inc.Superintelligent health insurance that keeps employees healthyYC S26San FranciscoStartup →AIRadleyThe AI-native radiology practiceYC S26San FranciscoStartup →AIRationalFirst Zero-human Accounting FirmYC S26San FranciscoStartup →AIRexAI operations partner for enterprise order-to-cashYC S26San FranciscoStartup →AIscreenpipeTurn your company's computer work into AI agents.YC S26San FranciscoStartup →AISidekickAI agent that manages manufacturing operations over textYC S26San FranciscoStartup →AIStudioAccurately simulate market response at scaleYC S26San FranciscoStartup →AITarifflo Inc.Supply chain compliance and cost savingsYC S26Salt Lake CityStartup →AITenorInfrastructure for building and scaling AI-native businesses.YC S26San FranciscoStartup →AITokenlessWe find flaws in RL environments and evals and help you fix them.YC S26San FranciscoStartup →AITropeAI FDE that deploys custom AI agents into ERPsYC S26San FranciscoStartup →AIWhitespaceAI Operating System for Wholesale DistributionYC S26San FranciscoStartup →AIZaplarAgentic Hotel Operating SystemYC S26StockholmStartup →AIZommaThe AI BPO for financial servies, run by computer-use agentsYC S26San FranciscoStartup →AIInvariant AIAutonomous agents to accelerate compliance for the physical economy.EF 2026San FranciscoStartup →OtherMarv LabsAutonomous vehicle maintenance.EF 2026San FranciscoStartup →OtherMeadowAutonomous consumer companies.EF 2026San FranciscoStartup →OtherSaturn LabsRobotics neolab building higher fidelity data layer by deploying proprietary human exoskeletons that mimic robot sensors.EF 2026San FranciscoStartup →AISeeftAI-powered spend and revenue management for real economy businesses.EF 2026San FranciscoStartup →AIAlchemizeBuilding AI Native Customs BrokeragesYC X26San FranciscoStartup →AIAndcoAgents that build personal injury casesYC X26San FranciscoStartup →OtherDreachstaffing firms with dreach know before they hire.YC X26San FranciscoStartup →AIEnjamb LabsThe AI Workforce for BiopharmaYC X26San FranciscoStartup →AIExpanseUnlock wasted GPU capacity.YC X26LondonStartup →AIHedgeAI-Native insurance companyYC X26San FranciscoStartup →
Company
PlyxlThe workspace that does the workteam of 4YC W27ActiveAI
RoteAI-native insurance department for auto body shopsYC W27ActiveAI
0.securityThe autonomous cybersecurity teamteam of 2YC F26ActiveAI, Devtools
Agent 37Cloud Sandbox for AgentsYC F26ActiveAI, Devtools
Applied KineticsAI-native manufacturing for data center and energy projectsteam of 2YC F26ActiveAI
AucertA team of expert AI agents that test mobile apps on their own.team of 2YC F26ActiveAI, Devtools
BayworksIntelligence that keeps America’s vehicles runningteam of 2hiringYC F26ActiveAI
Boxes.devA better place to run your coding agents.team of 2YC F26ActiveAI, Devtools
ClaimKitAI-native tax firmteam of 4YC F26ActiveAI
CoveraAI-native OS for insurance brokersteam of 2YC F26ActiveAI
DatabuddyAI Data Analyst for fast-growing teamsYC F26ActiveAI, Data, Devtools
DecentYour health plan should get better year-round. Not just once a year.team of 2YC F26ActiveAI
DeepMarkA live watermark inside AI voice that survives phone callsteam of 5YC F26ActiveAI
ElithiaAgents for the medical review behind every claimYC F26ActiveAI
EpsilabLong horizon RL environments from real-life datateam of 4hiringYC F26ActiveAI, Data
FaradayIndustrial aOS coordinating humans, agents, and machinesteam of 2YC F26ActiveAI
FleetyFleety is an AI dispatcher for plumbing and HVAC companies.team of 4YC F26ActiveAI
ForwardThe private credit network for leading debt advisorsteam of 7YC F26ActiveAI
GodHandsTurn how your team works into playbooks and agents.team of 2YC F26ActiveAI
GradonLegora for AEC (Architecture, Engineering, & Construction) firmsteam of 2YC F26ActiveAI, Devtools
LarkAI agents that automate workflows for distributorsteam of 2YC F26ActiveAI
MirrorsFix recurring AI agent mistakes with real-time guidanceteam of 2YC F26ActiveAI, Devtools
NeomatterAI that works for in-house legal teamsteam of 2YC F26ActiveAI
ObiaAI-native commercial real estate brokerageteam of 4YC F26ActiveAI
OpenScaffoldSuperagent for Deployment Teamsteam of 2YC F26ActiveAI
PapayaContinuously improve the quality of your AI agents.team of 3YC F26ActiveAI, Devtools
Perceptual LabsBuilding the next generation of visual intelligenceteam of 2YC F26ActiveAI, Devtools
Plover LabsEnable enterprises to ship agent code without human reviewteam of 2YC F26ActiveAI, Devtools
PomeradoTurn any website into an MCP for your agents, in minutesteam of 2YC F26ActiveAI, Devtools
PreloadSensorimotor context for physical AIteam of 3YC F26ActiveAI
RisklyticsAI-Native Insurance for Frontier Techteam of 2YC F26ActiveAI
RouterPlusMarketplace for AI inference: the right model at the best priceteam of 3YC F26ActiveAI, Devtools
RysticTrain models and test agents in high-fidelity simulated environmentsteam of 2YC F26ActiveAI, Devtools
SaccadeWorld's Earliest Test for Alzheimer's Biomarkersteam of 2YC F26ActiveAI
SintropixAutonomous accounting platform for global companiesteam of 2YC F26ActiveAI
Sona8Voice agents survey employees to map, improve & automate workflowsteam of 5YC F26ActiveAI, Devtools
TilionSuper fast, unblockable browser infra for agentsteam of 4YC F26ActiveAI, Devtools
Workers IOSimulation environments for verifying mission-critical softwareteam of 2hiringYC F26ActiveAI, Devtools
Aerogen SystemsModernizing Chip Manufacturing Infrastructureteam of 4YC S26ActiveOther
Akon LabsDatabricks for Enterprise Codebasesteam of 2YC S26ActiveAI
Amorphic LabsOpenRouter for Agent Toolsteam of 2YC S26ActiveAI, Devtools
AsyncAI agents that run businessesteam of 2YC S26ActiveAI
Billow AI LabsAI-native Accounting Firm that's killing DeloitteYC S26ActiveAI
CarSignalThe AI Operating System for Auto Shops.team of 2YC S26ActiveAI
COACHThe AI Coach for in person sales reps.team of 4hiringYC S26ActiveAI
ConiferIntelligent decisions for critical AI operationsteam of 4YC S26ActiveAI, Devtools
Context.devWeb data API for agentsteam of 6YC S26ActiveAI, Devtools
DecaworkTraining company-specific models that approve AI actions.2 programsteam of 2YC S26 +1ActiveAI, Devtools
Dialogusvoice AI agents that learn how your company actually worksteam of 3YC S26ActiveAI, Devtools
DockAI agents that run your business.team of 2YC S26ActiveAI
DreamUsing VLMs to Catch Damageteam of 2YC S26ActiveAI
EdviroAI That Operates Energy Infrastructureteam of 2hiringYC S26ActiveAI, Devtools
FamiliarMultimodal Translationteam of 8YC S26ActiveAI, Devtools
GitCafeThe Git forge for the next hundred billion commitsteam of 2YC S26ActiveAI, Devtools
GlenInstitutional Learning Layer for Every Agent in Your CompanyhiringYC S26ActiveAI
HERAAgents for Industrialsteam of 2hiringYC S26ActiveAI
HubbleAI-native retrieval engine for medical recordsteam of 2hiringYC S26ActiveAI
KaraMaking Diamond Semiconductorsteam of 2YC S26ActiveOther
KebraAI For The Skilled Workforceteam of 2YC S26ActiveAI
Lamb LabsLightning fast chips with hardcoded AI modelshiringYC S26ActiveAI
LATOPredict how market participants behaveteam of 2hiringYC S26ActiveAI, Data
Levocred AIAI Workforce for lendersteam of 2YC S26ActiveAI
Luca IQAPI-first tax engine for CPA firms and developersteam of 5hiringYC S26ActiveAI, Devtools
MaingenSimulating Agents Running Industrial Companiesteam of 2YC S26ActiveAI, Data
MarkerPlatform + FDEs that rebuild enterprises agent-firstteam of 3YC S26ActiveAI
NebuSecAutonomous AI defense system for cyber attackteam of 4YC S26ActiveAI
NeuromorphicBuilding robots to automate wetlabsteam of 3YC S26ActiveAI
OneCLIAI teammates for your business-critical work.YC S26ActiveAI, Devtools
OpenTagModel Agnostic AI coworker in Slackteam of 3YC S26ActiveAI
OS3Affordable, intelligent humanoid robots built to deploy at scaleteam of 2hiringYC S26ActiveAI
OsseusData research lab for aligned health and biological AIteam of 2YC S26ActiveAI, Data
PalisadeAI that finds and fixes OS-level vulnerabilities across device fleetsYC S26ActiveAI
Perceptron MLWe make law firms AI-native.team of 2YC S26ActiveAI
PetrarchAdvancing model capabilities for critical infrastructureteam of 3YC S26ActiveAI, Data
Poth LabsThe customer brain that connects data to explain customer behaviorteam of 2YC S26ActiveAI, Data
Prescience, Inc.Superintelligent health insurance that keeps employees healthyteam of 5hiringYC S26ActiveAI
RadleyThe AI-native radiology practiceteam of 2YC S26ActiveAI
RationalFirst Zero-human Accounting Firmteam of 2hiringYC S26ActiveAI
RexAI operations partner for enterprise order-to-cashteam of 2hiringYC S26ActiveAI
screenpipeTurn your company's computer work into AI agents.team of 2hiringYC S26ActiveAI
SidekickAI agent that manages manufacturing operations over textYC S26ActiveAI
StudioAccurately simulate market response at scaleteam of 2YC S26ActiveAI, Data
Tarifflo Inc.Supply chain compliance and cost savingsteam of 5YC S26ActiveAI
TenorInfrastructure for building and scaling AI-native businesses.team of 3hiringYC S26ActiveAI
TokenlessWe find flaws in RL environments and evals and help you fix them.team of 3YC S26ActiveAI, Devtools
TropeAI FDE that deploys custom AI agents into ERPsteam of 2YC S26ActiveAI
WhitespaceAI Operating System for Wholesale Distributionteam of 2YC S26ActiveAI
ZaplarAgentic Hotel Operating Systemteam of 7YC S26ActiveAI
ZommaThe AI BPO for financial servies, run by computer-use agentsteam of 5YC S26ActiveAI
Invariant AIAutonomous agents to accelerate compliance for the physical economy.EF 2026Not statedAI
Marv LabsAutonomous vehicle maintenance.EF 2026Not statedOther
MeadowAutonomous consumer companies.EF 2026Not statedOther
Saturn LabsRobotics neolab building higher fidelity data layer by deploying proprietary human exoskeletons that mimic robot sensors.EF 2026Not statedOther
SeeftAI-powered spend and revenue management for real economy businesses.EF 2026Not statedAI
AlchemizeBuilding AI Native Customs Brokeragesteam of 2YC X26ActiveAI
AndcoAgents that build personal injury casesteam of 3YC X26ActiveAI
Dreachstaffing firms with dreach know before they hire.team of 5YC X26ActiveOther
Enjamb LabsThe AI Workforce for Biopharmateam of 2YC X26ActiveAI
ExpanseUnlock wasted GPU capacity.team of 4YC X26ActiveAI, Devtools
HedgeAI-Native insurance companyteam of 2hiringYC X26ActiveAI

About B2B

Companies per batch

B2B companies per YC batch
S05: 0W06: 0S06: 0W07: 1S07: 0W08: 02008S08: 0W09: 0S09: 1W10: 0S10: 0W11: 1S11: 6W12: 52012S12: 6W13: 1S13: 4W14: 8S14: 5W15: 6S15: 7W16: 82016S16: 2W17: 11S17: 10W18: 18S18: 7W19: 27S19: 19W20: 462020S20: 57W21: 78S21: 102W22: 102S22: 88W23: 97S23: 52W24: 552024S24: 66F24: 18W25: 35X25: 27S25: 33F25: 34W26: 12X26: 14S26: 51F26: 36F26

Nearby spaces: Fintech 182, Developer Tools 162, Generative AI 70, Sales 66, Enterprise Software 57, Enterprise 54, Analytics 50, Marketplace 48, API 46, E-commerce 45