Y Combinator Winter 2026
2026
198 companies in Y Combinator Winter 2026. Biggest markets: AI for Financial & Compliance Ops (31), AI Data & Model Infrastructure (26), Agent Infrastructure & Orchestration (24). Each with its founders and the page its membership is read from.
/dev/fastSan Francisco, CA, USA/dev/fast is the AI-native code forge
10x ScienceSan Francisco, CA, USAThe AI-native platform for next-generation protein characterization.
21stSan Francisco, CA, USAUI building blocks for the agentic internet

Agentic FabriqSan Francisco, CA, USAThe control plane for AI agents.
Alt-XLos Angeles, CA, USABuilding the best venue for private markets exposure.
AnchorheadSan Francisco, CA, USAFractional buyer for hardware companies in critical industries
ApproximaSan Francisco, CA, USAYour software should build itself.
ARC Prize FoundationSan Francisco, CA, USA; RemoteAI benchmarks that measure general intelligence and inspire new ideas
AshrSan Francisco, CA, USAAutomated Multi-Modal Testing for Agents
AsimovSan Francisco, CA, USA; RemoteReal-world human movement data for humanoid robots
Aurorin CADSan Francisco, CA, USAClaude code for Mechanical Engineers

AI-native workspace for development plan reviews
Autumn AISan Francisco, CA, USAStalk your prospects at scale.

Harvey for Architecture
AxionOrbital SpaceSan Francisco, CA, USAFoundation models for 24/7 Earth Observation
AxisSan Francisco, CA, USAAn AI Copilot for Trading Desks
BalanceLondon, England, United KingdomFull-Stack AI Accounting
BaseFrameSan Francisco, CA, USADetect what AI can automate for your team
Beacon HealthSan Francisco, CA, USAAI Employees for Primary Care
BeeSafe AISan Francisco, CA, USAFrontier AI Defenses for Social Engineering Attacks
Beyond Reach LabsNew York City, NY, USASpace solar arrays that grow to the size of a football field in orbit
BidflowNew York City, NY, USAAI Takeoffs for Electrical
BookoSan Francisco, CA, USADynamically pricing the whole economy.
Brumby (Formerly GrazeMate)Sydney, NSW, AustraliaRobot Cowboys that Herd Cattle with AI Drones
Bubble LabSan Francisco, CA, USAOperating system for premium professional communities
BurtSan Francisco, CA, USAAI teammates for logistics
Button ComputerSan Francisco, CA, USAThe tiny computer built for voice AI.
ByteportSan Francisco, CA, USAGlobal upload acceleration for 1GB-100TB files.
CajalSan Francisco, CA, USAScaling formal verification to accelerate scientific discovery
CanarySan Francisco, CA, USAThe first AI QA engineer that understands your code
CaptainSan Francisco, CA, USAAccurate, high-performance retrieval for AI agents
CardboardSan Francisco, CA, USAAgentic video editor
CardinalSan Francisco, CA, USARevenue Agents for GTM teams
CarettaSan Francisco, CA, USARealtime AI for Sales Calls
Carrot LabsSan Francisco, CA, USAAI Cost Management: Track and attribute AI spend across every provider
CascadeSan Francisco, CA, USADistilling Proprietary Intelligence
CatchBack CardsSan Francisco, CA, USAThe most thrilling way to create and rip digital collectible packs
CellTypeNew York City, NY, USAThe agentic drug company. We simulate human biology.
ChamberSeattle, WA, USAThe AIOps Agent for ML Teams
ChasiSan Francisco, CA, USAAI Revenue Engine for the Equipment Industry
ClaimGlideSeattle, WA, USAAI automated prior-auths for private medical practices

CofiaNew York City, NY, USAAI automations that implement themselves
CompresrSan Francisco, CA, USALLM context compression for better accuracy
Condor EnergyParis, Île-de-France, FranceSoftware for enterprise energy procurement.
Confluence LabsSan Francisco, CA, USAAI models that learn from experience
CongruentSan Francisco, CA, USAAI native radars for self-driving cars
Constellation SpaceSeattle, WA, USAAI operating system for mega-scale satellite networks.
CopperlaneSan Francisco, CA, USAAgentic Mortgage Origination
CorelayerSan Francisco, CA, USAAI production engineer for regulated industries
CorveraSan Francisco, CA, USAThe context layer for AI-native CPG brands
Crosslayer LabsNew York City, NY, USAProtect, monitor and defend your Internet presence
CrowSan Francisco, CA, USA
Cumulus LabsSan Francisco, CA, USAThe Fastest Multimodal Inference OS
DAIVIN!San Francisco, CA, USATankless Dive Gear - Breath Autonomy at Sea, Land & Space
DiditSan Francisco, CA, USAInfrastructure for identity and fraud.
Ditto BiosciencesSan Francisco, CA, USAEvolutionary intelligence for autoimmune disease

DoomersionSan Francisco, CA, USA; RemoteDoomscroll to learn languages
EigenPalSan Francisco, CA, USAAI Document Workflows for Enterprises
EmdashSan Francisco, CA, USAOpen-source Agentic Development Environment

AI powered reconciliation for high-volume payments companies
EnvariantSan Francisco, CA, USAInterpretability and reasoning infra for foundation models.
Eos AISan Francisco, CA, USAAutonomous OS for healthcare
Fed10San Francisco, CA, USAAI Agents for Government Affairs
Fenrock AISan Francisco, CA, USAAI agents for banks


ForemanSan Francisco, CA, USAKeeping contractors on the job site, not behind a desk.
FortSan Francisco, CA, USAStrength Tracking Wearable
ForumNew York City, NY, USAThe first exchange to trade on attention.

AI agents for corporate accounting teams
Galactic Resource Utilization Space, Inc. (GRU Space)San Francisco, CA, USAMoon Hotel -> The Intergalactic Construction Company of Earth
General AstronauticsSan Francisco, CA, USARobotics for Space R&D

Elite AI law firm for high growth companies
GradeSan Francisco, CA, USAAPI for performance-based payroll
HaladirSan Francisco, CA, USAOperational Superintelligence for Global Logistics

Human ArchiveSan Francisco, CA, USAPhysical AI data lab
IncidentFoxSan Francisco, CA, USAAI SRE agent that triages, coordinates, and fixes production incidents
InstinctSan Francisco, CA, USATrade your instinct
InventoryQuantSan Francisco, CA, USAWe automate the inventory process in insurance
Inviscid AISingapore, Singapore; RemoteReal-time Physics Simulations for Industrial Facilities & Data Centers

Automate enterprise workflows through chat
Khotan (formerly Pollinate)San Francisco, CA, USAAI Agents for the supply chain.
KitaSan Francisco, CA, USAAutomate credit assessment for lenders in emerging markets
Klaus AISan Francisco, CA, USAFast and Safe OpenClaw on the cloud

Custom Aerospace-Grade Battery Packs
LanceSan Francisco, CA, USAAI Agents That Run Hotel Operations.

LegalOSSan Francisco, CA, USA; RemoteThe AI-Native Immigration Law Firm

LucentSan Francisco, CA, USAAI that automatically improves products from user behavior
LuelSan Francisco, CA, USATurning everyday words and actions into usable training data.

Foundation models for planning orthopedic surgery
MantisNew York City, NY, USADigital Twins of humans
MartiniSan Francisco, CA, USAAI Video Production for Professionals
MavenSan Francisco, CA, USAPayments Infrastructure for Voice Agents
MaywoodNew York City, NY, USAThe first finance-compliant proactive AI that runs 24/7
MendralSan Francisco, CA, USAAI DevOps Engineer
MenzaLondon, England, United KingdomThe AI data analyst for consumer brands
MillirayLondon, England, United KingdomTechnology to detect and track small drones
MirabelleParis, Île-de-France, FranceYour robot chef
MochaCareSan Francisco, CA, USAAgentic Management Service for Care Organizations
ModaSan Francisco, CA, USAContinual learning for AI agents
MoritzOslo, Oslo, NorwayGlobal AI-native law firm handling legal work with same-day turnaround
MouseCatNew York City, NY, USAAI-powered fraud investigations
NdeaRemoteBuilding AGI that can innovate.
o11New York City, NY, USABespoke AI For Financial Firms

CV and robotics to automate quality inspection in fish farms
One RobotSan Francisco, CA, USAWorld models for robot evals and training.
Opalite HealthSan Francisco, CA, USAHelping Healthcare Providers Speak Any Language
OpenSpecSydney, NSW, AustraliaPlan mode for complex features
Origami RoboticsSan Francisco, CA, USAManipulate Anything Robot
OriginSan Francisco, CA, USAAI and Data for Cancer Therapeutics
OrthogonalSan Francisco, CA, USAAgentic Payments for APIs
OssusSan Francisco, CA, USAIntelligence for cultural institutions
Overdrive HealthNew York City, NY, USAAI-Native Medical Billing Services
OvershootSan Francisco, CA, USAAI Infra for real-time vision applications
OximySan Francisco, CA, USATake command of the AI your company already runs on.
OxusSan Francisco, CA, USAAI-powered automation for internal audit workflows

Your startup's financial advisor
PantaSan Francisco, CA, USAAI Native Commercial Insurance Brokerage
Parameter (fka Hex Security)San Francisco, CA, USAAgentic Offensive Security at Scale

AI front & back office agent for dental practices
Pax HistoriaSan Francisco, CA, USAThe first AI-powered grand strategy platform
PaynaSan Francisco, CA, USAAI Licensing Agent for Regulated Industries
PerfectlySan Francisco, CA, USAThe AI-native Recruiting OS
Piris LabsSan Francisco, CA, USAThe Networking Layer of AI
PocketSan Francisco, CA, USATake Notes in the Real World
PollenSan Francisco, CA, USAAI agents that automate customer success
PolymathSan Francisco, CA, USASimulation environments to train & evaluate long-horizon AI agents
PolymorphSan Francisco, CA, USABuilding secure polymorphic apps
PranaSan Francisco, CA, USAAn AI primary care doctor in your pocket
ProtentSan Francisco, CA, USAReal time intelligence for law enforcement & security teams.
ProximittySan Francisco, CA, USAAI operating system for commercial loans

We help private equity teams find acquisition targets faster
RamAInSan Francisco, CA, USAAutomate any UI task with natural language
ReframeSan Francisco, CA, USAAI-native, hardware procurement marketplace
RemixSan Francisco, CA, USASocial media content auto-generated with your existing data
Ressl AIBengaluru, KA, IndiaTrain, eval and build autonomous agents
REV1San Francisco, CA, USAClaude Code for Mechanical Engineers
RevionNew York City, NY, USAIntelligence for Automotive Operations
Rhizome AINew York City, NY, USA; RemoteAgent Platform for Life Sciences
RitivelBengaluru, KA, IndiaAI-native platform for Life-Sciences Documentation
RobbyNew York City, NY, USAAI agents that grow revenue for home services businesses
RoboDockSan Francisco, CA, USARobots that run autonomous depots for autonomous fleets.
Rubric AINew York City, NY, USAReasoning and verification infra for AI
Ruma CareSan Francisco, CA, USAThe operations stack for biologic infusion clinics
RunAnywhereSan Francisco, CA, USAThe default way of running on-device AI at Scale
SalusSan Francisco, CA, USAGuardrails to validate your agent's actions before they execute

Multilingual voice agents that outperform humans
Scheduling WizardWashington, DC, USALogistics infrastructure to modernize healthcare operations
Seeing SystemsLondon, England, United KingdomModular AI-Commanded Drones for Defence
SentrialSan Francisco, CA, USADatadog for Agent Reliability
Sequence MarketsToronto, ON, CanadaLow-latency execution across crypto, prediction, and tokenized assets
Servo7Amsterdam, NH, NetherlandsContainer unloading robots for warehouses
ShofoSan Francisco, CA, USAThe World's Largest Video Library

SignalsSan Francisco, CA, USAiMessage revenue channel for DTC brands that brings customers back
SilaNew York City, NY, USAAgent-Native Messaging Platform
SitefireBY, GermanyMarketing suite for the agentic web
SkillsyncSan Francisco, CA, USAGithub for agent sessions
SparklesSan Francisco, CA, USAMake everyone on your team an engineer
SpongeSan Francisco, CA, USAFinancial infrastructure for the agent economy
SpotPaySan Francisco, CA, USAStablecoin Global Bank Account
SquidLondon, England, United KingdomAI agents for power grid planning 🦑
StiltaStockholm, Stockholm County, SwedenAgentic AI for intellectual property
Strand AISan Francisco, CA, USAMultimodal foundation models to predict uncollected patient biology
SupafaxSan Francisco, CA, USAAI assistant for your email and calendar
Synthetic SciencesSan Francisco, CA, USAFoundation Models for Scientific Research
SyntropySan Francisco, CA, USAThe agentic coding app for complex tasks.
Talking ComputersToronto, ON, CanadaAI for AI Infrastructure
TepaliNew York City, NY, USAAI operating system for modern medspas
Terminal UseSan Francisco, CA, USADigital twins for data center construction
Terranox AISan Francisco, CA, USAThe first AI-powered uranium discovery company
The Token CompanySan Francisco, CA, USACompression middleware that improves LLM outputs
TraverseSan Francisco, CA, USAResearch lab solving non-verifiable work
TravoSan Francisco, CA, USAThe data infrastructure for real estate
UnifoldNew York City, NY, USAMulti-chain deposit and payment infrastructure
UnissonSan Francisco, CA, USAAI agents that automate B2B software implementation
ValenceSan Francisco, CA, USAUnified prediction markets trading platform
ValgoSan Francisco, CA, USAInsurance risk layer for physical AI
Vector LegalSan Francisco, CA, USAA premier AI-native law firm & legal operating system for Startups.
VelaSan Francisco, CA, USAAI Recruiting Coordinator for Executive Search
Velum LabsSan Francisco, CA, USAThe OS for data quality across any stack
VenturaSan Francisco, CA, USAAI Workforce for Distributors and Manufacturers
VerdexSan Francisco, CA, USAAI Verification for Insurance
Visibl SemiconductorsSan Francisco, CA, USAA faster, lower cost path to custom silicon
VoltairSan Francisco, CA, USAAutonomous Drones for Earth Observation

Energy independent data centers with solar and repurposed batteries.
VOYGRSan Francisco, CA, USAReal-world place intelligence for AI apps and agents

WideframeSan Francisco, CA, USAAI coworker for video editors to ship more video faster
ZatannaSan Francisco, CA, USATurning all software into agent-first APIs
ZeroSettleSan Diego, CA, USADrop-in Direct Billing SDK for In-App Purchases
ZymblyLondon, England, United KingdomAutomates admin for aircraft mechanics