YC Winter 2025The W25 batch: 165 companies, 83% AI
165
companies
83%
AI
13
data
41
developer tools
By category
- AI137 (83%)
- Data1 (1%)
- Developer tools7 (4%)
- Other20 (12%)
The W25 companies
165 of 165 companies
.WaveAIContinuous inference for streaming AI models
10xAIAI Sales Teams for Dental Practices
a0.devAIWe make mobile apps using AI.
A1Zap by A1BaseAIThe social network layer for AI apps
AdamAIAI Powered CAD
AfterQueryAIApplied research lab curating data solutions for foundation model…
Agentin AIAIAI Agents that automate enterprise software processes
Alice.techAIAI-driven exam prep
AltrinaInactiveThe SOP Automation Platform
ArchonDeveloper toolsWe help software companies sell to government.
ArtifactAIAn Collaborative, AI-native IDE for Hardware Engineers
Artificial SocietiesAIFoundational model of human societies for consequential decisions
assistant-uiAIOpen Source React.js Library for AI Chat
AsteroidAIThe integration layer for healthcare: EHRs, payer portals & more
AstroAIThe world’s first AI energy developer
AthenaHQAIBe the Answer in AI Search - AI SEO across SEO, GEO & AEO
awenAIawen translates intent into exceptional visuals through conversation
BezelAIDigital AI humans that model clothes for e-commerce brands.
Bild AIAIAI estimating & detailing for Division 8 doors, frames & hardware
BindwellAIDiscovering new pesticides with AI
BlindPayDeveloper toolsStablecoin API for global payments
BluebookAIAI for accounting
Browser UseAIAgents that use the browser.
BudAIAgent with a computer
ButterAIEmbedded Sandboxes for Agents
CalltreeAIEnterprise-grade AI support reps for call centers
CandorAIWe help companies win government funding with AI
CandorAIProtect your data and stop insider risk
CardamonAIAI compliance co-pilot for regulated financial businesses
careCycleAIVoice AI teams for medicare agencies.
Caseflood.aiAIHow elite law firms do intake
CedarDeveloper toolsExecute the best sales playbook in industry
CenoteAIAI agents for conversational commerce
CifratoAIAI Accountant for Accounting Firms
ClosureAIWe help law enforcement solve crime
CodevisorAIThe fastest native app for agentic engineering.
Confident AIAIThe LLM Eval and Observability Platform for AI Quality
ConntourAIAI to monitor thousands of security cameras.
ContrarioAIAI hiring platform powered by expert recruiters
CopyCat AIAIAI for Commercial Insurance Agencies
CorsairAIOpenRouter for Integrations
Cuckoo LabsAIReal-time AI translator for global sales and marketing
DalusAIAI-Powered Hardware System Design Software
DartboardAIAI-native remote operations center for hardware fleets
DelineateAIAgents for Accelerated Clinical Trial Design
DextoAIAWS for AI Agents
EdexiaAIAI Teacher Assistant for Grading Essays
Egress HealthAcquiredAutomated revenue cycle management, starting with dentists
Elip AIAICooking something sweet and salty!
Enhanced RadarAIAI for air traffic control
ErgoAIAI agents and unified data layer for revenue teams
Excellence LearningAIAI tutor starting with maths and science
Exin TherapeuticsAIAI drug discovery platform for neurotherapeutics
ExlaAIBuilding agents that reads logs and fixes issues on your behalf.
finbarAIThe AI investment analyst
FlowtelAIThe AI Voice agents for hotels
Fuse AIAIAgentic Sales Platform
G LNKAISimplifying Collaboration for Healthcare Organizations & Professionals
GaleAIFast and Data-Driven Immigration Platform
General TrajectoryAIAI for the physical world
HarberaAIAI Healthcare Provider Credentialing Software
HarperAIAI-native commercial insurance brokerage
HealthKeyAIAI-powered Patient Identification for Clinical Trials
Hey TeloAIVoice AI for Home Services
HUDAIPlatform for building RL environments and evals
InfiniteDeveloper toolsGlobal B2B Stablecoin Processor
InvoAIinfra for computer use agents
KarooAIAI native consumer lending platform for underserved Americans
Leaping AIAIAI voice and texting agents
Liquid ComputeAIPending CFTC regulation to be the first cash and physically settled…
LopusAIHeadless Data Team
Lucidic AIAIReimagining how Machines Learn
MacadamiaAIAI Agents for Complex Engineering Projects
MaiveAIAI for Home Services
MastraAIThe Javascript framework for building AI agents, from the Gatsby devs
Mecha HealthAIFoundation models to automate x-ray analysis for radiologists
MentraAIBuilding the open source smart glasses operating system.
MercuraAIAI Quote and Order Automation for Distributors & Manufacturers
MeshAIEliminating accrual spreadsheets for faster month-end
MisprintAIMisprint is building Robinhood for Pokemon cards
Miyagi LabsAIAI tutors for exam prep
MosaicAIFrontier Video Agents
Mundo AIAIHigh Quality Multilingual Training Data for AI Models
NitrodeAIFrontier AI research to advance game development
OkiAIThe memory computer for your digital life.
OliveAIBuild internal tools with AI
OnlookAICursor for Designers
OpenIntakeAIThe AI Front Door For Law Firms
Optifye.aiAIAI performance monitoring for factory workers
OsmosisAIReinforcement Learning (RL) for AI Agents
OutlitAIProtect and Grow Long-tail Revenue
OutshipAIHire amazing engineers by seeing how they use AI
Overstand LabsAINavigate any set of data - no matter how large - in minutes.
OvloAIFounder led hiring for London startups
ParagonAIThe AI Growth Engine for Industrials
Paratus HealthAIhealthcare AI
PAX MarketsDeveloper toolsMore 𝛼, less latency: exchange and HFT on one chip.
Peppr AIAIIn-call AI teleprompter that helps reps close enterprise deals
PermitifyAIAI co-pilot for building plan review and building code compliance
PickleAIWhere your life context becomes understanding.
PinchAIAI Voice Translation for live conversations or media
PraximAIThe agentic AI Word editor
Proception IncAIMaking humanoids dexterous enough to thread a needle
PromptlessAIAn AI teammate that automatically updates your customer-facing docs
QuantstructAIAI documentation engineer – test & autoimprove stale product docs
RallyAIFinancial OS for Modern Fleets
ReboltAIAI-Powered Company OS
ReJotDataWe turn complex API integrations into drop‑in full‑stack libraries
RetrofitAIA vintage marketplace curated by AI
Revise RoboticsAIAutomating refurbishment of $1T in consumer electronics
RivieraAIAI Employees for Hotels
RoarkAITest, monitor, and improve your voice agents
RocketableAIThe AI Maximalist Software Holding Company
SalesPatriotAIAI powered operating system for distributors and OEMs
ScoutAIAI-powered student information system for K-12 schools
Sennu AIAIWe turn traditional companies into AI companies
SolidroadAIAI agents for CX teams, starting with training and QA.
SpottAIAI-native ATS/CRM for recruiting firms
StampAIThe AI Secretary for Email and Calendar.
StillwindAIPCB component librarian
SubImageDeveloper toolsThe Open-Core Security Graph
SublingualInactiveDaily productivity tracker
SubtraceDeveloper toolsZero code network tracer
superglueAIconnect, migrate and implement enterprise systems
SwerveAIChat with AI Characters
TamLabsAIAgent teams for complex work
TensorPoolAcquiredVercel For GPUs
TergleAIAI Agents for Audit
ThirdlayerAIContinual learning for enterprise AI
Toothy AIAIAI for insurance verification & billing at dental clinics
TrainLoopAIReasoning Fine-Tuning
TrataAIAI-powered research desk for hedge funds
TravaAIAI agents for global trade compliance
TrimAIA foundation model for physics.
Tweeks.ioAILovable for Chrome Plugins
VantelAIAI Platform for Commercial Insurance Brokerages
VerbiflowAIOutbound Sequencing Infrastructure for Startups
VetnioAIAI Copilot that automates admin work for veterinary professionals
Vocality HealthAIVoice AI for medical language translation
Waypoint TransitAIWe automate urban planning so cities can build cheaper and faster.
WeaveAIAI to understand and then route engineering work
WildcardAIAEO/GEO for E-Commerce and Retail
WozAIClaude Code plugin that reduces token consumption and cost by 50%
YouShiftAIThe OS for hospital workforce management
ZeroEntropyAcquiredArtificial Specialized Intelligence
Amby HealthOtherThe health coach that texts you first
AxalOtherWe design, assemble, and test custom PCBs fast.
AxiomOtherTrade memecoins, perpetuals, and earn yield.
BystreetOtherYour partner for hotel ownership data.
FiraOtherFinancial research platform for investment firms
Forge AutomationOtherSoftware Enabled CNC Parts Supplier
Instinct SpaceOtherBuilding lunar landers
Inversion SemiconductorOtherManufacturing the most powerful chips, 15x faster
KarsaOtherStablecoin neobank for emerging markets
LucidOtherinteractive video models
Maritime FusionOtherFusion reactors for ships
OperandOther
Orbital OperationsOtherHigh Thrust Space Vehicles for Satellite Defense
Pave RoboticsOtherRobots that repair roads
Red Barn RoboticsOtherA Roomba for weeds on a farm.
Reditus SpaceOtherReusable Satellites
SAMMY LabsOtherComputational Law
Splash Inc.OtherAutonomous patrol-boats for National Security
SteinmetzOtherNext-Generation Power Electronics
Uncommon TherapeuticsOtherA Disease Focused Biotech, Building Multiple Billion Dollar DrugsW25 among all batches
Top tags in W25
- Developer Tools17
- Generative AI16
- Fintech11
- Hardware9
- Sales9
- Open Source8
- Consumer8
- Infrastructure7
- Health Tech7
- AI Assistant6
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