Y Combinator Winter 2026 companies
198 companies in the W26 batch. Read the one-liners rather than scanning the names — they are the most instructive part of the directory, because each one shows how a funded company chose to narrow its own description.
- MenzaYC Winter 2026· London, England, United Kingdom· 3 people
The AI data analyst for consumer brands
- BidflowYC Winter 2026· New York City, NY, USA· 2 people
AI Takeoffs for Electrical
- Galactic Resource Utilization Space, Inc. (GRU Space)YC Winter 2026· San Francisco, CA, USA· 5 people
Moon Hotel -> The Intergalactic Construction Company of Earth
- SignalsYC Winter 2026· San Francisco, CA, USA· 2 people
iMessage revenue channel for DTC brands that brings customers back
- Overdrive HealthYC Winter 2026· New York City, NY, USA· 1 people
AI-Native Medical Billing Services
- Autumn AIYC Winter 2026· San Francisco, CA, USA· 2 people
Stalk your prospects at scale.
- PollenYC Winter 2026· San Francisco, CA, USA· 3 people
AI agents that automate customer success
- Button ComputerYC Winter 2026· San Francisco, CA, USA· 1 people
The tiny computer built for voice AI.
- Alt-XYC Winter 2026· Los Angeles, CA, USA· 2 people
Building the best venue for private markets exposure.
- Velum LabsYC Winter 2026· San Francisco, CA, USA· 2 people
The OS for data quality across any stack
- TravoYC Winter 2026· San Francisco, CA, USA· 4 people
The data infrastructure for real estate
- Agentic FabriqYC Winter 2026· San Francisco, CA, USA· 2 people
The control plane for AI agents.
- CaptainYC Winter 2026· San Francisco, CA, USA· 2 people
Accurate, high-performance retrieval for AI agents
- OxusYC Winter 2026· San Francisco, CA, USA· 3 people
AI-powered automation for internal audit workflows
- General AstronauticsYC Winter 2026· San Francisco, CA, USA· 2 people
Robotics for Space R&D
- Vector LegalYC Winter 2026· San Francisco, CA, USA· 5 people
A premier AI-native law firm & legal operating system for Startups.
- VoltairYC Winter 2026· San Francisco, CA, USA· 5 people
Autonomous Drones for Earth Observation
- Crosslayer LabsYC Winter 2026· New York City, NY, USA· 3 people
Protect, monitor and defend your Internet presence
- NdeaYC Winter 2026· Remote· 15 people
Building AGI that can innovate.
- Inviscid AIYC Winter 2026· Singapore, Singapore· 2 people
Real-time Physics Simulations for Industrial Facilities & Data Centers
- ClaimGlideYC Winter 2026· Seattle, WA, USA· 1 people
AI automated prior-auths for private medical practices
- HaladirYC Winter 2026· San Francisco, CA, USA· 4 people
Operational Superintelligence for Global Logistics
- MantisYC Winter 2026· New York City, NY, USA· 3 people
Digital Twins of humans
- CatchBack CardsYC Winter 2026· San Francisco, CA, USA· 7 people
The most thrilling way to create and rip digital collectible packs
- FullSeamYC Winter 2026· Remote· 3 people
AI agents for corporate accounting teams
- CorveraYC Winter 2026· San Francisco, CA, USA· 4 people
The context layer for AI-native CPG brands
- ARC Prize FoundationYC Winter 2026· San Francisco, CA, USA· 4 people
AI benchmarks that measure general intelligence and inspire new ideas
- ValgoYC Winter 2026· San Francisco, CA, USA· 3 people
Insurance risk layer for physical AI
- Eos AIYC Winter 2026· San Francisco, CA, USA· 2 people
Autonomous OS for healthcare
- HlabsYC Winter 2026· Austin, TX, USA· 1 people
US-Made Parts for Robots
- OriginYC Winter 2026· San Francisco, CA, USA· 4 people
AI and Data for Cancer Therapeutics
- PaynaYC Winter 2026· San Francisco, CA, USA· 2 people
AI Licensing Agent for Regulated Industries
- PantaYC Winter 2026· San Francisco, CA, USA· 3 people
AI Native Commercial Insurance Brokerage
- DiditYC Winter 2026· San Francisco, CA, USA· 16 people
Infrastructure for identity and fraud.
- One RobotYC Winter 2026· San Francisco, CA, USA· 2 people
World models for robot evals and training.
- SyntropyYC Winter 2026· San Francisco, CA, USA· 2 people
The agentic coding app for complex tasks.
- KitaYC Winter 2026· San Francisco, CA, USA· 3 people
Automate credit assessment for lenders in emerging markets
- Klaus AIYC Winter 2026· San Francisco, CA, USA· 2 people
Fast and Safe OpenClaw on the cloud
- Ruma CareYC Winter 2026· San Francisco, CA, USA· 2 people
The operations stack for biologic infusion clinics
- LucentYC Winter 2026· San Francisco, CA, USA· 2 people
AI that automatically improves products from user behavior
- RunAnywhereYC Winter 2026· San Francisco, CA, USA· 5 people
The default way of running on-device AI at Scale
- LanceYC Winter 2026· San Francisco, CA, USA· 10 people
AI Agents That Run Hotel Operations.
- Docura HealthYC Winter 2026· San Francisco, CA, USA· 3 people
AI-Native Med-Legal Firm
- MirabelleYC Winter 2026· Paris, Île-de-France, France· 2 people
Your robot chef
- AxisYC Winter 2026· San Francisco, CA, USA· 2 people
An AI Copilot for Trading Desks
- LexiusYC Winter 2026· San Francisco, CA, USA· 3 people
AI for Corporate Security Cameras
- AsimovYC Winter 2026· San Francisco, CA, USA· 3 people
Real-world human movement data for humanoid robots
- shortkitYC Winter 2026· Remote· 2 people
Media infra for consumer apps
- REV1YC Winter 2026· San Francisco, CA, USA· 2 people
Claude Code for Mechanical Engineers
- 10x ScienceYC Winter 2026· San Francisco, CA, USA· 4 people
The AI-native platform for next-generation protein characterization.
- SentrialYC Winter 2026· San Francisco, CA, USA· 2 people
Datadog for Agent Reliability
- LegalOSYC Winter 2026· San Francisco, CA, USA· 3 people
The AI-Native Immigration Law Firm
- CofiaYC Winter 2026· New York City, NY, USA· 3 people
AI automations that implement themselves
- ProtentYC Winter 2026· San Francisco, CA, USA· 2 people
Real time intelligence for law enforcement & security teams.
- BaseFrameYC Winter 2026· San Francisco, CA, USA· 2 people
Detect what AI can automate for your team
- Strand AIYC Winter 2026· San Francisco, CA, USA· 2 people
Multimodal foundation models to predict uncollected patient biology
- Beacon HealthYC Winter 2026· San Francisco, CA, USA· 2 people
AI Employees for Primary Care
- CascadeYC Winter 2026· San Francisco, CA, USA· 2 people
Distilling Proprietary Intelligence
- EnvariantYC Winter 2026· San Francisco, CA, USA· 1 people
Interpretability and reasoning infra for foundation models.
- BurtYC Winter 2026· San Francisco, CA, USA· 2 people
AI teammates for logistics
- CellTypeYC Winter 2026· New York City, NY, USA· 2 people
The agentic drug company. We simulate human biology.
- Piris LabsYC Winter 2026· San Francisco, CA, USA· 8 people
The Networking Layer of AI
- OpenSpecYC Winter 2026· Sydney, NSW, Australia
Plan mode for complex features
- /dev/fastYC Winter 2026· San Francisco, CA, USA· 4 people
/dev/fast is the AI-native code forge
- ZeroSettleYC Winter 2026· San Diego, CA, USA· 2 people
Drop-in Direct Billing SDK for In-App Purchases
- Kyten TechnologiesYC Winter 2026· Seattle, WA, USA· 2 people
Custom Aerospace-Grade Battery Packs
- AvoiceYC Winter 2026· Remote· 4 people
Harvey for Architecture
- 21stYC Winter 2026· San Francisco, CA, USA· 3 people
UI building blocks for the agentic internet
- Palus FinanceYC Winter 2026· Remote· 2 people
Your startup's financial advisor
- TepaliYC Winter 2026· New York City, NY, USA· 2 people
AI operating system for modern medspas
- Cumulus LabsYC Winter 2026· San Francisco, CA, USA· 2 people
The Fastest Multimodal Inference OS
- VerdexYC Winter 2026· San Francisco, CA, USA· 2 people
AI Verification for Insurance
- AutoSituYC Winter 2026· Remote· 2 people
AI-native workspace for development plan reviews
- ZatannaYC Winter 2026· San Francisco, CA, USA· 2 people
Turning all software into agent-first APIs
- MouseCatYC Winter 2026· New York City, NY, USA· 6 people
AI-powered fraud investigations
- SkillsyncYC Winter 2026· San Francisco, CA, USA· 2 people
Github for agent sessions
- RoboDockYC Winter 2026· San Francisco, CA, USA· 3 people
Robots that run autonomous depots for autonomous fleets.
- Scheduling WizardYC Winter 2026· Washington, DC, USA· 3 people
Logistics infrastructure to modernize healthcare operations
- LuelYC Winter 2026· San Francisco, CA, USA· 12 people
Turning everyday words and actions into usable training data.
- AemonYC Winter 2026· San Francisco, CA, USA· 3 people
The Forward-Deployed AI Research Engineer
- AshrYC Winter 2026· San Francisco, CA, USA· 2 people
Automated Multi-Modal Testing for Agents
- CodeWispYC Winter 2026· San Francisco, CA, USA· 3 people
Anyone can create real games with AI
- OctaPulseYC Winter 2026· Remote· 2 people
CV and robotics to automate quality inspection in fish farms
- Beyond Reach LabsYC Winter 2026· New York City, NY, USA· 5 people
Space solar arrays that grow to the size of a football field in orbit
- MillirayYC Winter 2026· London, England, United Kingdom· 3 people
Technology to detect and track small drones
- RamAInYC Winter 2026· San Francisco, CA, USA· 4 people
Automate any UI task with natural language
- MoritzYC Winter 2026· Oslo, Oslo, Norway· 10 people
Global AI-native law firm handling legal work with same-day turnaround
- SalusYC Winter 2026· San Francisco, CA, USA· 2 people
Guardrails to validate your agent's actions before they execute
- EigenPalYC Winter 2026· San Francisco, CA, USA
AI Document Workflows for Enterprises
- SparklesYC Winter 2026· San Francisco, CA, USA· 1 people
Make everyone on your team an engineer
- FernYC Winter 2026· Remote· 2 people
RL environments for robotics companies
- PerfectlyYC Winter 2026· San Francisco, CA, USA· 4 people
The AI-native Recruiting OS
- OrthogonalYC Winter 2026· San Francisco, CA, USA· 2 people
Agentic Payments for APIs
- Q2QYC Winter 2026· San Francisco, CA, USA· 2 people
We help private equity teams find acquisition targets faster
- VenturaYC Winter 2026· San Francisco, CA, USA· 2 people
AI Workforce for Distributors and Manufacturers
- Terranox AIYC Winter 2026· San Francisco, CA, USA· 2 people
The first AI-powered uranium discovery company
- SpongeYC Winter 2026· San Francisco, CA, USA· 3 people
Financial infrastructure for the agent economy
- Mango MedicalYC Winter 2026· Remote· 3 people
Foundation models for planning orthopedic surgery
- Confluence LabsYC Winter 2026· San Francisco, CA, USA· 2 people
AI models that learn from experience
- Opalite HealthYC Winter 2026· San Francisco, CA, USA· 3 people
Helping Healthcare Providers Speak Any Language
- CompresrYC Winter 2026· San Francisco, CA, USA· 4 people
LLM context compression for better accuracy
- IncidentFoxYC Winter 2026· San Francisco, CA, USA· 2 people
AI SRE agent that triages, coordinates, and fixes production incidents
- UnissonYC Winter 2026· San Francisco, CA, USA· 2 people
AI agents that automate B2B software implementation
- StiltaYC Winter 2026· Stockholm, Stockholm County, Sweden· 4 people
Agentic AI for intellectual property
- InstinctYC Winter 2026· San Francisco, CA, USA· 5 people
Trade your instinct
- ProximittyYC Winter 2026· San Francisco, CA, USA· 2 people
AI operating system for commercial loans
- CajalYC Winter 2026· San Francisco, CA, USA· 2 people
Scaling formal verification to accelerate scientific discovery
- OvershootYC Winter 2026· San Francisco, CA, USA· 5 people
AI Infra for real-time vision applications
- Terminal UseYC Winter 2026· San Francisco, CA, USA· 4 people
Digital twins for data center construction
- LaurenceYC Winter 2026· New York City, NY, USA· 2 people
Hedge fund for ads
- Parameter (fka Hex Security)YC Winter 2026· San Francisco, CA, USA· 10 people
Agentic Offensive Security at Scale
- Pax HistoriaYC Winter 2026· San Francisco, CA, USA· 3 people
The first AI-powered grand strategy platform
- Rhizome AIYC Winter 2026· New York City, NY, USA· 1 people
Agent Platform for Life Sciences
- PranaYC Winter 2026· San Francisco, CA, USA· 4 people
An AI primary care doctor in your pocket
- CardboardYC Winter 2026· San Francisco, CA, USA· 5 people
Agentic video editor
- JinbaYC Winter 2026· Remote· 2 people
Automate enterprise workflows through chat
- Seeing SystemsYC Winter 2026· London, England, United Kingdom· 2 people
Modular AI-Commanded Drones for Defence
- Synthetic SciencesYC Winter 2026· San Francisco, CA, USA· 2 people
Foundation Models for Scientific Research
- Visibl SemiconductorsYC Winter 2026· San Francisco, CA, USA· 2 people
A faster, lower cost path to custom silicon
- Patientdesk.aiYC Winter 2026· Remote· 5 people
AI front & back office agent for dental practices
- ChamberYC Winter 2026· Seattle, WA, USA· 4 people
The AIOps Agent for ML Teams
- End CloseYC Winter 2026· Remote· 2 people
AI powered reconciliation for high-volume payments companies
- Fenrock AIYC Winter 2026· San Francisco, CA, USA· 2 people
AI agents for banks
- MaywoodYC Winter 2026· New York City, NY, USA· 5 people
The first finance-compliant proactive AI that runs 24/7
- RevionYC Winter 2026· New York City, NY, USA· 10 people
Intelligence for Automotive Operations
- TraverseYC Winter 2026· San Francisco, CA, USA· 1 people
Research lab solving non-verifiable work
- ApproximaYC Winter 2026· Toronto, ON, Canada· 2 people
Your software should build itself.
- ValenceYC Winter 2026· San Francisco, CA, USA· 3 people
Unified prediction markets trading platform
- ReframeYC Winter 2026· San Francisco, CA, USA· 1 people
AI-native, hardware procurement marketplace
- CongruentYC Winter 2026· San Francisco, CA, USA· 2 people
AI native radars for self-driving cars
- InventoryQuantYC Winter 2026· San Francisco, CA, USA· 1 people
We automate the inventory process in insurance
- EmdashYC Winter 2026· San Francisco, CA, USA· 2 people
Open-source Agentic Development Environment
- Ressl AIYC Winter 2026· Bengaluru, KA, India· 3 people
Train, eval and build autonomous agents
- RobbyYC Winter 2026· New York City, NY, USA· 3 people
AI agents that grow revenue for home services businesses
- SitefireYC Winter 2026· BY, Germany· 2 people
Marketing suite for the agentic web
- ForumYC Winter 2026· New York City, NY, USA· 2 people
The first exchange to trade on attention.
- Human ArchiveYC Winter 2026· San Francisco, CA, USA· 10 people
Physical AI data lab
- Samora AIYC Winter 2026· Remote· 8 people
Multilingual voice agents that outperform humans
- CarettaYC Winter 2026· San Francisco, CA, USA· 4 people
Realtime AI for Sales Calls
- OximyYC Winter 2026· San Francisco, CA, USA· 8 people
Take command of the AI your company already runs on.
- AxionOrbital SpaceYC Winter 2026· San Francisco, CA, USA· 2 people
Foundation models for 24/7 Earth Observation
- MendralYC Winter 2026· San Francisco, CA, USA· 2 people
AI DevOps Engineer
- Constellation SpaceYC Winter 2026· Seattle, WA, USA· 4 people
AI operating system for mega-scale satellite networks.
- ByteportYC Winter 2026· San Francisco, CA, USA· 4 people
Global upload acceleration for 1GB-100TB files.
- PocketYC Winter 2026· San Francisco, CA, USA· 15 people
Take Notes in the Real World
- Bubble LabYC Winter 2026· San Francisco, CA, USA· 2 people
Operating system for premium professional communities
- PolymathYC Winter 2026· San Francisco, CA, USA· 6 people
Simulation environments to train & evaluate long-horizon AI agents
- Voxel EnergyYC Winter 2026· Remote· 3 people
Energy independent data centers with solar and repurposed batteries.
- Servo7YC Winter 2026· Amsterdam, NH, Netherlands· 3 people
Container unloading robots for warehouses
- Ditto BiosciencesYC Winter 2026· San Francisco, CA, USA· 3 people
Evolutionary intelligence for autoimmune disease
- Sequence MarketsYC Winter 2026· Toronto, ON, Canada· 5 people
Low-latency execution across crypto, prediction, and tokenized assets
- DoomersionYC Winter 2026· San Francisco, CA, USA· 4 people
Doomscroll to learn languages
- o11YC Winter 2026· New York City, NY, USA· 2 people
Bespoke AI For Financial Firms
- AnchorheadYC Winter 2026· San Francisco, CA, USA· 2 people
Fractional buyer for hardware companies in critical industries
- ChasiYC Winter 2026· San Francisco, CA, USA· 2 people
AI Revenue Engine for the Equipment Industry
- BalanceYC Winter 2026· London, England, United Kingdom· 4 people
Full-Stack AI Accounting
- FortYC Winter 2026· San Francisco, CA, USA· 4 people
Strength Tracking Wearable
- General LegalYC Winter 2026· Remote· 25 people
Elite AI law firm for high growth companies
- CorelayerYC Winter 2026· San Francisco, CA, USA· 3 people
AI production engineer for regulated industries
- BookoYC Winter 2026· San Francisco, CA, USA· 2 people
Dynamically pricing the whole economy.
- ForemanYC Winter 2026· San Francisco, CA, USA· 2 people
Keeping contractors on the job site, not behind a desk.
- CrowYC Winter 2026· San Francisco, CA, USA· 2 people
- SquidYC Winter 2026· London, England, United Kingdom· 3 people
AI agents for power grid planning 🦑
- Fed10YC Winter 2026· San Francisco, CA, USA· 3 people
AI Agents for Government Affairs
- BeeSafe AIYC Winter 2026· San Francisco, CA, USA· 3 people
Frontier AI Defenses for Social Engineering Attacks
- The Token CompanyYC Winter 2026· San Francisco, CA, USA· 2 people
Compression middleware that improves LLM outputs
- ModaYC Winter 2026· San Francisco, CA, USA· 6 people
The continual learning layer for AI agents.
- MavenYC Winter 2026· San Francisco, CA, USA· 2 people
Payments Infrastructure for Voice Agents
- SilaYC Winter 2026· New York City, NY, USA· 2 people
Agent-Native Messaging Platform
- GradeYC Winter 2026· San Francisco, CA, USA· 2 people
API for performance-based payroll
- CanaryYC Winter 2026· San Francisco, CA, USA· 2 people
The first AI QA engineer that understands your code
- CopperlaneYC Winter 2026· San Francisco, CA, USA· 2 people
Agentic Mortgage Origination
- Talking ComputersYC Winter 2026· Toronto, ON, Canada· 2 people
AI for AI Infrastructure
- SupafaxYC Winter 2026· San Francisco, CA, USA· 2 people
AI assistant for your email and calendar
- VelaYC Winter 2026· San Francisco, CA, USA· 2 people
AI Recruiting Coordinator for Executive Search
- MochaCareYC Winter 2026· San Francisco, CA, USA· 2 people
Agentic Management Service for Care Organizations
- VOYGRYC Winter 2026· San Francisco, CA, USA
Real-world place intelligence for AI apps and agents
- SpotPayYC Winter 2026· San Francisco, CA, USA· 2 people
Stablecoin Global Bank Account
- Khotan (formerly Pollinate)YC Winter 2026· San Francisco, CA, USA· 2 people
AI Agents for the supply chain.
- PolymorphYC Winter 2026· San Francisco, CA, USA· 4 people
Building secure polymorphic apps
- RitivelYC Winter 2026· Bengaluru, KA, India· 3 people
AI-native platform for Life-Sciences Documentation
- ZymblyYC Winter 2026· London, England, United Kingdom· 3 people
Automates admin for aircraft mechanics
- Rubric AIYC Winter 2026· New York City, NY, USA· 1 people
Reasoning and verification infra for AI
- OssusYC Winter 2026· San Francisco, CA, USA· 3 people
Intelligence for cultural institutions
- Origami RoboticsYC Winter 2026· San Francisco, CA, USA· 5 people
Manipulate Anything Robot
- Brumby (Formerly GrazeMate)YC Winter 2026· Sydney, NSW, Australia· 3 people
Robot Cowboys that Herd Cattle with AI Drones
- DAIVIN!YC Winter 2026· Helsinki, Finland· 1 people
Tankless Dive Gear - Breath Autonomy at Sea, Land & Space
- FixtureYC Winter 2026· Remote· 5 people
An AI-first CRM built for Startups
- Aurorin CADYC Winter 2026· San Francisco, CA, USA· 1 people
Claude code for Mechanical Engineers
- Carrot LabsYC Winter 2026· San Francisco, CA, USA· 2 people
AI Cost Management: Track and attribute AI spend across every provider
- UnifoldYC Winter 2026· New York City, NY, USA· 3 people
Multi-chain deposit and payment infrastructure
- WaycoYC Winter 2026· New York City, NY, USA· 5 people
AI operator for medlegal cases
- ShofoYC Winter 2026· San Francisco, CA, USA· 4 people
The World's Largest Video Library
- RemixYC Winter 2026· San Francisco, CA, USA· 0 people
Social media content auto-generated with your existing data
- Condor EnergyYC Winter 2026· Paris, Île-de-France, France· 3 people
Software for enterprise energy procurement.
- MartiniYC Winter 2026· San Francisco, CA, USA· 2 people
AI Video Production for Professionals
- WideframeYC Winter 2026· San Francisco, CA, USA· 2 people
AI coworker for video editors to ship more video faster
- CardinalYC Winter 2026· San Francisco, CA, USA· 0 people
Revenue Agents for GTM teams