Y Combinator Summer 2026 companies
230 companies in the S26 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.
Showing the first 200 of 230. Search the full directory to filter further.
- BaudYC Summer 2026· San Francisco, CA, USA· 3 people
AI chips for ultra-fast training and inference
- AsyncYC Summer 2026· New York City, NY, USA· 2 people
AI agents that run small businesses
- Induction LabsYC Summer 2026· San Francisco, CA, USA· 2 people
Building intellectually curious AI
- OS3YC Summer 2026· San Francisco, CA, USA· 2 people
Affordable, intelligent humanoid robots built to deploy at scale
- EvergroveYC Summer 2026· New York City, NY, USA· 2 people
Instant healthcare for all, starting with work comp
- TensrYC Summer 2026· Emeryville, CA, USA· 7 people
Robotic factories that build robots
- SunflowerYC Summer 2026· San Francisco, CA, USA· 15 people
We are building an AI-native telemedicine clinic for addiction. 🌻
- Frontier ComputingYC Summer 2026· London, England, United Kingdom· 3 people
Frontier grows scalable biological brains as an ML training substrate
- Waddle LabsYC Summer 2026· San Francisco, CA, USA· 2 people
LLMs that control robots
- OneTriangleYC Summer 2026· San Francisco, CA, USA· 4 people
The cheapest, fastest inference cloud
- Prescience, Inc.YC Summer 2026· San Francisco, CA, USA· 5 people
Superintelligent health insurance that keeps employees healthy
- RapidfolioYC Summer 2026· San Francisco, CA, USA
AI-native back-office for banks and fintechs
- AssembleYC Summer 2026· San Francisco, CA, USA· 4 people
Autonomous IT Delivery
- ArchalYC Summer 2026· San Francisco, CA, USA· 2 people
API sandboxes, built for AI agents
- DatoricYC Summer 2026· San Francisco, CA, USA· 2 people
The secure training data R&D engine for physical AI
- Libra RoboticsYC Summer 2026· San Francisco, CA, USA· 2 people
Robotic crews for large-scale infrastructure construction
- EkpaYC Summer 2026· Boston, MA, USA· 2 people
Building Autonomous Research Agents for Trading
- MeteoricYC Summer 2026· San Francisco, CA, USA· 2 people
Drones that clear clouds over solar farms and weaken hurricanes
- AtliaYC Summer 2026· San Francisco, CA, USA· 2 people
The AI-native property management company for short-term rentals
- DreamYC Summer 2026· San Francisco, CA, USA· 2 people
Using VLMs to Catch Damage
- TsentaYC Summer 2026· San Francisco, CA, USA· 2 people
AI career agent that finds matching jobs & applies on your behalf
- Control SeatYC Summer 2026· San Francisco, CA, USA· 2 people
AI that runs factories.
- CovaYC Summer 2026· San Francisco, CA, USA· 2 people
Financial infrastructure for family caregiving
- Poth LabsYC Summer 2026· San Francisco, CA, USA· 2 people
The customer brain that connects data to explain customer behavior
- Dipole LabsYC Summer 2026· Boston, MA, USA· 0 people
AI-controlled optical switching for AI clusters
- Applied Electrodynamics, Inc.YC Summer 2026· San Francisco, CA, USA· 5 people
A new kind of camera that can see through walls.
- OpenVectorYC Summer 2026· San Francisco, CA, USA· 4 people
AI that turns any camera to an autonomous worker with real-time vision
- LitmusYC Summer 2026· San Francisco, CA, USA· 3 people
Evals for humans
- Illume LabsYC Summer 2026· San Francisco, CA, USA· 3 people
24/7 Personal Health & Longevity Companion
- Most RoboticYC Summer 2026· San Francisco, CA, USA· 2 people
Research lab building the most robotic household in the world
- PaletteYC Summer 2026· San Francisco, CA, USA· 2 people
The Media Engine of the AI Era
- MarkerYC Summer 2026· San Francisco, CA, USA· 3 people
Platform + FDEs that rebuild enterprises agent-first
- WonderTxYC Summer 2026· San Francisco, CA, USA· 3 people
Extrapolative AI to unlock First-in-Class drugs
- SidekickYC Summer 2026· San Francisco, CA, USA· 1 people
AI agent that manages manufacturing operations over text
- MentlioYC Summer 2026· San Francisco, CA, USA· 0 people
Engineering Intelligence and Token Optimization for the AI-Coding Era
- Atlas DiscoveryYC Summer 2026· San Francisco, CA, USA· 3 people
AI-native pharma company
- TridentYC Summer 2026· San Francisco, CA, USA· 4 people
Autonomous offensive security agents. The best defense is offense
- rekursiv.aiYC Summer 2026· San Francisco, CA, USA· 5 people
Scale AI scientists whose own breakthroughs accelerate the next.
- Amorphic LabsYC Summer 2026· San Francisco, CA, USA· 2 people
OpenRouter for Agent Tools
- Proprio RoboticsYC Summer 2026· San Francisco, CA, USA· 1 people
Robots to maintain and assemble data centers
- RindlerYC Summer 2026· Boston, MA, USA· 2 people
The IDE for Tokenmaxxers
- EdgerunYC Summer 2026· San Francisco, CA, USA· 5 people
Military exoskeletons
- GitCafeYC Summer 2026· San Francisco, CA, USA· 1 people
The Git forge for the next hundred billion commits
- KebraYC Summer 2026· San Francisco, CA, USA· 2 people
AI For The Skilled Workforce
- TorusYC Summer 2026· San Francisco, CA, USA· 6 people
Legora for physical engineering firms
- tashYC Summer 2026· San Francisco, CA, USA· 4 people
The BlackRock of collectibles
- PangoYC Summer 2026· New York City, NY, USA· 5 people
Agentic OS for e-commerce operations
- HopliteYC Summer 2026· San Francisco, CA, USA· 2 people
Effortlessly deploy cloud software factories.
- MoonshotYC Summer 2026· San Francisco, CA, USA· 3 people
agents for the rest of us
- DonkeyYC Summer 2026· San Francisco, CA, USA· 5 people
The AI-native trading company: factory prices, delivered, one number
- HERAYC Summer 2026· San Francisco, CA, USA· 2 people
We make sure every factory in the world builds without mistakes.
- ErinysYC Summer 2026· San Francisco, CA, USA· 3 people
We help lawyers start and scale AI-native law firms.
- Perceptron MLYC Summer 2026· San Francisco, CA, USA· 2 people
We make law firms AI-native.
- Mass MagneticsYC Summer 2026· Boston, MA, USA· 3 people
USA-made magnetics for robotics and defense.
- Egoist MachinesYC Summer 2026· San Francisco, CA, USA· 2 people
Your personal context, securely portable across every AI app.
- Olam LabsYC Summer 2026· San Francisco, CA, USA· 2 people
Building multi-agent simulations for model evals and training.
- ShieldedYC Summer 2026· San Francisco, CA, USA· 0 people
We help Fortune 500 companies hedge their supply chain risk
- BelvedirYC Summer 2026· San Francisco, CA, USA· 2 people
The autonomous AI model factory
- ParasmaYC Summer 2026· San Francisco, CA, USA· 2 people
Replacing GPUs with human brain cells
- TropeYC Summer 2026· San Francisco, CA, USA· 2 people
AI FDE that deploys custom AI agents into ERPs
- PalisadeYC Summer 2026· San Francisco, CA, USA· 1 people
AI-native sales agents that run marketplaces
- KaraYC Summer 2026· San Francisco, CA, USA· 2 people
Making Diamond Semiconductors
- NebuSecYC Summer 2026· San Francisco, CA, USA· 4 people
Autonomous AI defense system for cyber attack
- ZommaYC Summer 2026· San Francisco, CA, USA· 5 people
The AI BPO for financial servies, run by computer-use agents
- RexYC Summer 2026· San Francisco, CA, USA· 2 people
AI-native BPO for enterprise order-to-cash
- EnactYC Summer 2026· San Francisco, CA, USA· 2 people
Real-world RL environments for robotics models
- MaingenYC Summer 2026· San Francisco, CA, USA· 2 people
Simulating Agents Running Industrial Companies
- MusicArenaYC Summer 2026· San Francisco, CA, USA· -1 people
The crowdsourced benchmark for AI-generated music and music production
- BernardYC Summer 2026· New York City, NY, USA· 9 people
AI employees that run home appliance repair companies
- StudioYC Summer 2026· San Francisco, CA, USA· 2 people
Accurately simulate market response at scale
- PrizedYC Summer 2026· San Francisco, CA, USA· 2 people
A cloud devbox that feels local
- OrchestraYC Summer 2026· San Francisco, CA, USA· 2 people
Self-optimizing neocloud that cuts LLM costs by 100x
- Synapse SemiconductorYC Summer 2026· Durham, NC, USA· 2 people
New semiconductors that merge compute and vision
- SpekoYC Summer 2026· San Francisco, CA, USA· 4 people
OpenRouter for Voice AI: one API, every call on the best speech model
- GutgutgooseYC Summer 2026· San Francisco, CA, USA· 7 people
We sequence your gut and build the probiotics it’s missing
- LemonLimeYC Summer 2026· San Francisco, CA, USA· 5 people
Fully automated GTM for small business
- JcodeYC Summer 2026· San Francisco, CA, USA· 1 people
High performance coding agents
- InsurfYC Summer 2026· Providence, RI, USA· 3 people
The AI-Native Decision Layer for Health Insurance
- IMPACT DronesYC Summer 2026· San Francisco, CA, USA· 2 people
Air Defense as a Service for Civilian Infrastructure.
- VerdantYC Summer 2026· San Francisco, CA, USA· 2 people
AI Agents to Make Local Gov Efficient
- General Context LabsYC Summer 2026· San Francisco, CA, USA· 4 people
Building Products and Datasets for Frontier Models
- Rise ReformingYC Summer 2026· Chicago, IL, USA· 4 people
We turn waste gases into supply-secure chemicals
- FloraceneYC Summer 2026· New York City, NY, USA· 2 people
Vibecode + deploy HIPAA-compliant internal tools, no eng team needed
- GUILDYC Summer 2026· New York City, NY, USA· 2 people
Making Defense Manufacturing Faster and Cheaper
- RealPactYC Summer 2026· San Francisco, CA, USA· 2 people
AI-native OS for Real Estate Brokerages
- RiftenYC Summer 2026· San Francisco, CA, USA· 5 people
Earned intelligence for every company
- BizmarkYC Summer 2026· San Francisco, CA, USA· 2 people
OpenClaw for manufacturers
- MosaicYC Summer 2026· San Francisco, CA, USA· 2 people
Defining the frontier of multiplayer AI.
- DialogusYC Summer 2026· San Francisco, CA, USA· 3 people
The AI-native contact center
- AllooviumYC Summer 2026· San Francisco, CA, USA· 5 people
The company brain for construction companies
- MochiYC Summer 2026· San Francisco, CA, USA· 3 people
Watch and create anime
- DeepReach Inc.YC Summer 2026· San Francisco, CA, USA· 6 people
Network for Physical AI Data Business
- COACHYC Summer 2026· San Francisco, CA, USA· 4 people
The AI Coach for in person sales reps.
- GrocaloYC Summer 2026· Los Angeles, CA, USA· 2 people
AI brain for creators that runs their social content
- AudunYC Summer 2026· Oslo, Oslo, Norway· 5 people
AI-native debt collection company
- MarbleYC Summer 2026· New York City, NY, USA· 2 people
The autonomous back-of-house for restaurants.
- StoaYC Summer 2026· San Francisco, CA, USA· 3 people
The market behind AI hardware.
- GlenYC Summer 2026· San Francisco, CA, USA· 1 people
Institutional Learning Layer for Every Agent in Your Company
- Context.devYC Summer 2026· San Francisco, CA, USA· 6 people
We give AI agents realtime web context via API
- CodagYC Summer 2026· San Francisco, CA, USA· 1 people
The AI gateway for cheaper, faster, permissioned agents.
- ExosatYC Summer 2026· Singapore, Singapore· 3 people
Building a neutral, sovereign alternative to Starlink
- TouchmarkYC Summer 2026· San Francisco, CA, USA· 2 people
Market for future inference capacity
- Prodigy ResearchYC Summer 2026· San Francisco, CA, USA· 2 people
Training the world's best AI model for quantitative finance.
- ZaplarYC Summer 2026· Stockholm, Stockholm County, Sweden· 3 people
Agentic Hotel Operating System
- Spectre IntelligenceYC Summer 2026· San Francisco, CA, USA· 2 people
We are a multi-strategy trading firm that trains AI traders.
- screenpipeYC Summer 2026· San Francisco, CA, USA· 2 people
Turn your company's computer work into AI agents.
- ManifoldYC Summer 2026· Los Angeles, CA, USA· 2 people
Drop-in robotic labor that works on Day 1
- RasynYC Summer 2026· San Francisco, CA, USA· 3 people
Making chemicals 100,000x faster
- Alkera AIYC Summer 2026· San Francisco, CA, USA· 3 people
Reliable and safe data engineering and data science agents
- Callbook AIYC Summer 2026· San Francisco, CA, USA· 7 people
AI collections agency for late stage portfolios
- Tarifflo Inc.YC Summer 2026· Salt Lake City, UT, USA· 5 people
Supply chain compliance and cost savings
- TraceforceYC Summer 2026· San Francisco, CA, USA· 2 people
CrowdStrike for AI Agents
- EdotEnvYC Summer 2026· San Francisco, CA, USA· 2 people
Quant Neolab building self-improving agents from quant data
- Standard MachinesYC Summer 2026· San Francisco, CA, USA
Teaching AI to Design Chips
- Agency Tool CompanyYC Summer 2026· Denver, CO, USA· 3 people
Reliable infrastructure to build, deploy and manage real-world robots.
- CerenovusYC Summer 2026· San Francisco, CA, USA· 5 people
AI that finds value creation opportunities across enterprise…
- MolagriYC Summer 2026· Toronto, ON, Canada· 4 people
Resistance free pesticides.
- PeerYC Summer 2026· San Francisco, CA, USA· 2 people
AI-native freight brokerage
- EliteYC Summer 2026· New York City, NY, USA· 2 people
Healthcare AI
- FlowManualYC Summer 2026· San Francisco, CA, USA· 2 people
AI for Construction's Back Office
- PlutoYC Summer 2026· San Francisco, CA, USA· 5 people
LinkedIn for agents
- machine0YC Summer 2026· San Francisco, CA, USA· 1 people
AWS for Agents
- BloomyYC Summer 2026· San Francisco, CA, USA· 1 people
AI-native learning for every school
- 6thSenseYC Summer 2026· San Francisco, CA, USA· 4 people
Nervous System for Physical AI
- NoriYC Summer 2026· San Francisco, CA, USA· 5 people
The most capable American-made humanoid robot for $1,688
- Ooak DataYC Summer 2026· San Francisco, CA, USA· 5 people
We turn company data into training data
- Graphify LabsYC Summer 2026· San Francisco, CA, USA· 1 people
On-device Knowledge Graph engine for Enterprise Software
- Aerogen SystemsYC Summer 2026· Ann Arbor, MI, USA· 4 people
Modernizing Chip Manufacturing Infrastructure
- HilstartYC Summer 2026· San Francisco, CA, USA· 0 people
Autonomous Hardware Testing
- Greypoint IndustriesYC Summer 2026· San Francisco, CA, USA· 4 people
Building drone swarms that hunt hidden enemies.
- TareBioYC Summer 2026· San Francisco, CA, USA· 1 people
Vaccines for any cancer or infection in weeks.
- AlmanacYC Summer 2026· San Francisco, CA, USA· 3 people
Organizing company knowledge
- WhitespaceYC Summer 2026· San Francisco, CA, USA· 2 people
AI Operating System for Wholesale Distribution
- ClickYC Summer 2026· San Francisco, CA, USA· 1 people
Research services for ChatGPT and Claude
- Akon LabsYC Summer 2026· San Francisco, CA, USA· 2 people
Databricks for Enterprise Codebases
- Aktoria RoboticsYC Summer 2026· San Francisco, CA, USA· 2 people
Human as API for robots
- RationalYC Summer 2026· San Francisco, CA, USA· 2 people
First Zero-human Accounting Firm
- OmantaYC Summer 2026· San Francisco, CA, USA· 6 people
A research lab for one
- FabraixYC Summer 2026· San Francisco, CA, USA· 2 people
The world's frontier hacker of AI agents.
- QloYC Summer 2026· San Francisco, CA, USA· 2 people
Legora for commercial insurance carriers
- TenorYC Summer 2026· San Francisco, CA, USA· 3 people
Infrastructure for building and scaling AI-native businesses.
- DaqstraYC Summer 2026· San Francisco, CA, USA· 3 people
AI-native test infrastructure layer for hardware companies
- RisklyticsYC Summer 2026· San Francisco, CA, USA· 2 people
AI-Native Insurance for Frontier Tech
- LATOYC Summer 2026· San Francisco, CA, USA· 2 people
Predict how market participants behave
- NeuromorphicYC Summer 2026· San Francisco, CA, USA· 3 people
Building robots to automate wetlabs
- Neuron IndustriesYC Summer 2026· Los Angeles, CA, USA· 2 people
Industrial Controllers built for AI
- PokerClubHubYC Summer 2026· Jaco, Puntarenas Province, Costa Rica· 0 people
Host a Poker Club and Make Money
- ArbitalYC Summer 2026· San Francisco, CA, USA· 3 people
The social trading app for stocks, memes, and perps
- UltrasoniumYC Summer 2026· Boston, MA, USA· 5 people
Metal manufacturing, faster, cheaper, and more versatile.
- VestrisYC Summer 2026· San Francisco, CA, USA· 2 people
AI native platform for real estate closings
- Moving AtomsYC Summer 2026· San Francisco, CA, USA· 2 people
Virtual Reality for Training Robots
- Ekho LabsYC Summer 2026· New York City, NY, USA· 0 people
World Model for Freight
- Isengard Industries IncYC Summer 2026· San Francisco, CA, USA· 30 people
Mass-produced AI strike systems and Counter-UAS
- DentaYC Summer 2026· San Francisco, CA, USA· 1 people
Fortune 500 Dental Benefits for Startups
- ComputableYC Summer 2026· New York City, NY, USA· 2 people
Derivatives Exchange for Compute
- TryNearbyYC Summer 2026· Los Angeles, CA, USA· 5 people
Local creators for local businesses
- Financial DatasetsYC Summer 2026· New York City, NY, USA· 1 people
Connect your agents to the stock market
- Luca IQYC Summer 2026· San Francisco, CA, USA· 5 people
API-first tax engine for CPA firms and developers
- PacificYC Summer 2026· San Francisco, CA, USA· 6 people
Mass-producing and financing micro data center incredibly quickly.
- Last Accounting CompanyYC Summer 2026· Helsinki, Finland· 4 people
AI-native accounting firm.
- ExecutorYC Summer 2026· San Francisco, CA, USA· 1 people
The open source tool gateway
- WaybillYC Summer 2026· Gurugram, HR, India· 3 people
Agentic procurement & inventory for deep tech teams.
- RonanRx Inc.YC Summer 2026· San Francisco, CA, USA· 5 people
Full Stack Pharmaceutical Company for Personalized Peptides and GLP-1s
- MarengoYC Summer 2026· San Francisco, CA, USA· 2 people
AI-Native Engineering Firm designing Data Centers
- LumeriaYC Summer 2026· San Francisco, CA, USA· 3 people
Oura Ring for Skin
- MarkovYC Summer 2026· Bengaluru, KA, India· 2 people
Expert computer-use data for frontier AI labs
- Cosmic RoboticsYC Summer 2026· San Francisco, CA, USA· 8 people
Autonomous construction on Earth and beyond
- OperonYC Summer 2026· San Francisco, CA, USA· 0 people
Agentic data layer for manufacturing & process industries.
- InkboxYC Summer 2026· San Francisco, CA, USA· 3 people
The identity and communication layer for AI agents
- GamgeeYC Summer 2026· San Francisco, CA, USA· 2 people
Curing cancer. Starting with dogs.
- ProvenMetalYC Summer 2026· San Francisco, CA, USA· 4 people
AI-native electronics manufacturing for the American industrial base
- AgentcardYC Summer 2026· San Francisco, CA, USA· 0 people
cards for AI agents
- Agnost AIYC Summer 2026· San Francisco, CA, USA· 2 people
We find where AI agents fail, then train better models to run them.
- RadleyYC Summer 2026· San Francisco, CA, USA· 2 people
The AI-native radiology practice
- Care GPYC Summer 2026· Sydney, NSW, Australia· 10 people
AI agents to run primary healthcare operations
- Praxis RoboticsYC Summer 2026· San Francisco, CA, USA· 3 people
Turns real businesses into robotics data vendors
- Levocred AIYC Summer 2026· San Francisco, CA, USA· 2 people
The Bloomberg of Loans
- AxelrodYC Summer 2026· San Francisco, CA, USA· 2 people
Hotels that run themselves
- CarSignalYC Summer 2026· San Francisco, CA, USA· 2 people
The AI Operating System for Auto Shops.
- DecaworkYC Summer 2026· San Francisco, CA, USA· 2 people
Training company-specific models that approve AI actions.
- PennantYC Summer 2026· New York City, NY, USA· 2 people
The World Model for Corporate Governance
- DeryaYC Summer 2026· San Francisco, CA, USA· 2 people
AI Brokers for Industrial Trade
- TokenlessYC Summer 2026· San Francisco, CA, USA· 3 people
We find flaws in RL environments and evals and help you fix them.
- MireyeYC Summer 2026· San Francisco, CA, USA· 2 people
Search Engine for the Physical World
- Shiraz AIYC Summer 2026· San Francisco, CA, USA· 2 people
Robots that learn on the job
- Lamb LabsYC Summer 2026· San Francisco, CA, USA· 0 people
Lightning fast chips with hardcoded AI models
- CaptoYC Summer 2026· San Francisco, CA, USA· 2 people
Helping startups win gov contracts
- 83 SciencesYC Summer 2026· San Francisco, CA, USA· 3 people
AI-native materials discovery powered by unpublished experimental data
- PalisadeYC Summer 2026· San Francisco, CA, USA· 1 people
AI that finds and fixes OS-level vulnerabilities across device fleets
- HubbleYC Summer 2026· Seattle, WA, USA· 2 people
AI-native retrieval engine for medical records
- SkymerseYC Summer 2026· San Francisco, CA, USA
Autopilot for Flight Operations
- GripYC Summer 2026· Zürich, ZH, Switzerland· 4 people
Robots for waste manipulation
- HyperProbeYC Summer 2026· San Francisco, CA, USA· 8 people
AI engineer that debugs and fixes production incidents in realtime
- TovenAIYC Summer 2026· San Francisco, CA, USA· 2 people
AI agents for compliance at institutional trading firms
- Verdict MachineYC Summer 2026· Tel Aviv-Yafo, Tel Aviv District, Israel· 4 people
AI cybersecurity for financial institutions' digital assets
- DockYC Summer 2026· San Francisco, CA, USA· 2 people
Multiplayer workspace for agents and humans
- OpenRelayYC Summer 2026· San Francisco, CA, USA· 2 people
Distributed, hardware-agnostic AI inference
- Hop AeroYC Summer 2026· Los Angeles, CA, USA· 6 people
Rocket cargo delivery to contested environments
- PRINCEPSYC Summer 2026· London, England, United Kingdom· 2 people
AI-native insurance company for the compute economy
- Hebbian RoboticsYC Summer 2026· San Francisco, CA, USA· 2 people
Foundational infrastructure for Physical AI