Companies

Every startup from YC, 500 Global, Plug and Play and 6 more programs, newest cohort first, with program, category and status

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1,629 companies · 878 AI, 187 data, 1,629 devtools

Company	Category	Status	Program
ParsewiseMulti-document processing for your risk teams, AI agents, pipelinesActiveAI, Devtools	AI, Devtools	Active	YCX25
PartclDesign a chip in minutesActiveAI, Devtools	AI, Devtools	Active	YCX25
PercivalAccelerating data analysis for researchInactiveAI, Data, Devtools	AI, Data, Devtools	Inactive	YCX25
PgDogScaling engine for PostgreSQLActiveData, Devtools	Data, Devtools	Active	YCX25
PhotoniumAI-Powered Optical Consulting & SoftwareActiveAI, Devtools	AI, Devtools	Active	YCX25
PlexeOpen-source agents to build predictive ML models from a promptActiveAI, Data, Devtools	AI, Data, Devtools	Active	YCX25
PrismAbundant Intelligence for EveryoneActiveDevtools	Devtools	Active	YCX25
RefreshTraining gyms for computer use and software engineering workActiveDevtools	Devtools	Active	YCX25
RunRLReinforcement learning as a serviceActiveAI, Devtools	AI, Devtools	Active	YCX25
sieveAI + human review to solve data cleaning - accessible via API or ExcelActiveAI, Data, Devtools	AI, Data, Devtools	Active	YCX25
SixtyfourIntelligence Infrastructure on People and EntitiesActiveAI, Devtools	AI, Devtools	Active	YCX25
StarSlingSelf-Driving CI: fast AI-native GitHub Actions runnersActiveAI, Devtools	AI, Devtools	Active	YCX25
TheoremProgram verification so even your systems engineers can vibecodeActiveAI, Devtools	AI, Devtools	Active	YCX25
TinfoilEncrypted AI with verifiable privacyActiveAI, Devtools	AI, Devtools	Active	YCX25
Vassar RoboticsOpen-source semi-humanoid dev kit → home data → autonomy → 20h/wkActiveDevtools	Devtools	Active	YCX25
VybeSecure internal apps. Built by AI in seconds. Powered by your data.ActiveAI, Devtools	AI, Devtools	Active	YCX25
.WaveContinuous inference for streaming AI modelsActiveAI, Devtools	AI, Devtools	Active	YCW25
a0.devWe make mobile apps using AI.ActiveAI, Devtools	AI, Devtools	Active	YCW25
A1Zap by A1BaseThe social network layer for AI appsActiveAI, Devtools	AI, Devtools	Active	YCW25
AdamAI Powered CADActiveAI, Devtools	AI, Devtools	Active	YCW25
AfterQueryApplied research lab curating data solutions for foundation model…ActiveAI, Data, Devtools	AI, Data, Devtools	Active	YCW25
ArchonWe help software companies sell to government.ActiveDevtools	Devtools	Active	YCW25
assistant-uiOpen Source React.js Library for AI ChatActiveAI, Devtools	AI, Devtools	Active	YCW25
BlindPayStablecoin API for global paymentsActiveDevtools	Devtools	Active	YCW25
Browser UseAgents that use the browser.ActiveAI, Devtools	AI, Devtools	Active	YCW25
ButterEmbedded Sandboxes for AgentsActiveAI, Devtools	AI, Devtools	Active	YCW25
CedarExecute the best sales playbook in industryActiveDevtools	Devtools	Active	YCW25
CodevisorThe fastest native app for agentic engineering.ActiveAI, Devtools	AI, Devtools	Active	YCW25
Confident AIThe LLM Eval and Observability Platform for AI QualityActiveAI, Devtools	AI, Devtools	Active	YCW25
CorsairOpenRouter for IntegrationsActiveAI, Devtools	AI, Devtools	Active	YCW25
DelineateAgents for Accelerated Clinical Trial DesignActiveAI, Devtools	AI, Devtools	Active	YCW25
DextoAWS for AI AgentsActiveAI, Devtools	AI, Devtools	Active	YCW25
ExlaBuilding agents that reads logs and fixes issues on your behalf.ActiveAI, Devtools	AI, Devtools	Active	YCW25
HUDPlatform for building RL environments and evalsActiveAI, Devtools	AI, Devtools	Active	YCW25
InfiniteGlobal B2B Stablecoin ProcessorActiveDevtools	Devtools	Active	YCW25
Liquid ComputePending CFTC regulation to be the first cash and physically settled…ActiveAI, Devtools	AI, Devtools	Active	YCW25
Lucidic AIReimagining how Machines LearnActiveAI, Devtools	AI, Devtools	Active	YCW25
MastraThe Javascript framework for building AI agents, from the Gatsby devsActiveAI, Devtools	AI, Devtools	Active	YCW25
MentraBuilding the open source smart glasses operating system.ActiveAI, Devtools	AI, Devtools	Active	YCW25
Mundo AIHigh Quality Multilingual Training Data for AI ModelsActiveAI, Devtools	AI, Devtools	Active	YCW25
OnlookCursor for DesignersActiveAI, Devtools	AI, Devtools	Active	YCW25
OsmosisReinforcement Learning (RL) for AI AgentsActiveAI, Devtools	AI, Devtools	Active	YCW25
PAX MarketsMore 𝛼, less latency: exchange and HFT on one chip.ActiveDevtools	Devtools	Active	YCW25
PromptlessAn AI teammate that automatically updates your customer-facing docsActiveAI, Devtools	AI, Devtools	Active	YCW25
QuantstructAI documentation engineer – test & autoimprove stale product docsActiveAI, Devtools	AI, Devtools	Active	YCW25
ReJotWe turn complex API integrations into drop‑in full‑stack librariesActiveData, Devtools	Data, Devtools	Active	YCW25
StillwindPCB component librarianActiveAI, Devtools	AI, Devtools	Active	YCW25
SubImageThe Open-Core Security GraphActiveDevtools	Devtools	Active	YCW25
SublingualDaily productivity trackerInactiveAI, Devtools	AI, Devtools	Inactive	YCW25
SubtraceZero code network tracerActiveDevtools	Devtools	Active	YCW25
superglueconnect, migrate and implement enterprise systemsActiveAI, Devtools	AI, Devtools	Active	YCW25
TensorPoolVercel For GPUsAcquiredAI, Devtools	AI, Devtools	Acquired	YCW25
TrainLoopReasoning Fine-TuningActiveAI, Devtools	AI, Devtools	Active	YCW25
TrimA foundation model for physics.ActiveAI, Devtools	AI, Devtools	Active	YCW25
WeaveAI to understand and then route engineering workActiveAI, Data, Devtools	AI, Data, Devtools	Active	YCW25
WildcardAEO/GEO for E-Commerce and RetailActiveAI, Devtools	AI, Devtools	Active	YCW25
ZeroEntropyArtificial Specialized IntelligenceAcquiredAI, Devtools	AI, Devtools	Acquired	YC +1W25
AbundantAgent simulation and RL for researchersActiveAI, Devtools	AI, Devtools	Active	YCF24
AlexThe Cursor for XcodeActiveDevtools	Devtools	Active	YCF24
ArchilThe high-performance file system that connects AI to dataActiveAI, Data, Devtools	AI, Data, Devtools	Active	YCF24

Sources: each program's public company list, read twice a week. Not affiliated with Y Combinator or any other program. Logos via logo.dev; trademarks belong to their owners.

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