YC companies
454 companies284 AI454 data177 devtools92 acquired66 inactive
BuildboxF26Agent analytics for real user outcomesActive2
Kailash LabsF26A factory for small and specialized video reasoning modelsActive2
LyonF26Foundation models on enterprise transaction data.Active2
Perit.AIF26Expert-led data and RL platform for AI labsActive47
TrueMileF26AI agents that run trucking operations.Active3
Agnost AIS26We find where AI agents fail, then train better models to run them.Active2
Alkera AIS26Reliable and safe data engineering and data science agentsActive3
AtliaS26The AI-native property management company for short-term rentalsActive2
ClickS26Research services for ChatGPT and ClaudeActive1
CoArenaS26The biggest crowdsourced benchmark for Computer-UseActive2
CueBenchS26RL post-training for science reasoning and performance engineeringActive3
DatoricS26The secure training data R&D engine for physical AIActive2
Hebbian RoboticsS26APIs for robotics data teams to verify data quality for model trainingActive2
LATOS26Predict how market participants behaveActive2
LitmusS26Evals for humansActive3
MagmaS26Monetize your agent's traces.Active1
MaingenS26Simulating Agents Running Industrial CompaniesActive2
MarkovS26Expert computer-use data for frontier AI labsActive2
Moving AtomsS26Virtual Reality for Training RobotsActive2
Olam LabsS26Building multi-agent simulations for model evals and training.Active2
OsseusS26The frontier data platform for aligned health and biological AIActive2
PetrarchS26Internal industrial company data for frontier labsActive3
Poth LabsS26The customer brain that connects data to explain customer behaviorActive2
StudioS26Accurately simulate market response at scaleActive2
AmborasX26AI Native ShopifyActive3
ArdentX26Database sandboxes for AgentsActive3
BioStack PlatformsX26Real world training envs for healthcare AI modelsActive9
ForesightX26Consumer simulations for CPG market researchActive2
GigacatalystX26AI-first embedded analytics and reports for customer successActive3
HarborX26AI-native CRO for clinical trial operationsActive3
HubX26Real-world training data for frontier AI labs and robotics.Active10
KuliX26AI coworker for marketing teams at the largest consumer brandsActive1
NetterX26AI native Palantir for mid market.Active4
PLAN0 AIX26Construction Cost Intelligence.Active4
SynphonyX26robots & software for farmsActive10
Alt-XW26Building the best venue for private markets exposure.Active2
AshrW26Enterprise post-training, monitoring, and continual learning platformActive2
CaptainW26Self-tuning file search for AI agentsActive2
Constellation SpaceW26AI operating system for mega-scale satellite networks.Active4
CorveraW26The AI sales engine for CPG brandsActive4
End CloseW26AI powered reconciliation for high-volume payments companiesActive2
LaurenceW26Quantitative research for autonomous e-commerce growthActive2
MenzaW26The AI data analyst for consumer brandsActive3
PranaW26An AI primary care doctor in your pocketActive4
ShofoW26The World's Largest Video LibraryActive4
SitefireW26Marketing suite for the agentic webActive2
Velum LabsW26The OS for data quality across any stackActive2
AtlasGridF25Accelerate Product IterationActive6
BronF25TikTok for Sports TradingActive2
CrunchedF25Excel AI analyst for Power UsersActive5
DiligenceSquaredF25AI-powered market due diligence for investment decisionsActive3
HyperspellF25Your Company BrainActive8
LemmaF25Production Monitoring for AI agentsActive2
ParseF25Build an API to interact with any website.Active4
s2.devF25API for unlimited, durable, real-time streamsActive5
SciloopF25Expert STEM reasoning data for frontier AI labs.Active6
The Context CompanyF25Find what's losing you customers and money in your AI agent and fix itActive2
UplaneF25Replace marketing agencies with AIActive22
VelvetF25World model datasets and researchActive3
ZavoF25Unlocking the world’s most valuable data for frontier AI.Active8
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