YC Summer 2026 (S26)

Curing cancer. Starting with dogs.

Local creators for local businesses

The open source tool gateway

Replacing GPUs with human brain cells

Fully automated GTM for small business

Training the world's best AI model for quantitative finance.

On-device Knowledge Graph engine for Enterprise Software

Oura Ring for Skin

The autonomous back-of-house for restaurants.

A new kind of camera that can see through walls.

Drones that clear clouds over solar farms and weaken hurricanes

Building a neutral, sovereign alternative to Starlink

Rocket cargo delivery to contested environments

OpenRouter for Voice AI: one API, every call on the best speech model

Defining the frontier of multiplayer AI.

A research lab for one

Mass-deployable radars for air defense

We find where AI agents fail, then train better models to run them.

AI-native Accounting Firm that's killing Deloitte

Autonomous construction on Earth and beyond

The most capable American-made humanoid robot for $1,688

Teaching AI to Design Chips

LLMs that control robots

Movies in Every Language. Better than Humans.

Building intellectually curious AI

LinkedIn for agents

Turn your company's computer work into AI agents.

Duolingo for learning anything

Air Defense as a Service for Civilian Infrastructure.

AI-native electronics manufacturing for the American industrial base

Evals for robots

Let your users build their own features on top of your product

We give AI agents realtime web context via API

Internal industrial company data for frontier labs

The BlackRock of collectibles

AI FDE that deploys custom AI agents into ERPs

The world's frontier hacker of AI agents.

Autonomous AI defense system for cyber attack

Building multi-agent simulations for model evals and training.

API sandboxes, built for AI agents

AI-native learning for every school

Your personal context, securely portable across every AI app.

Institutional Learning Layer for Every Agent in Your Company

The identity and communication layer for AI agents

Infrastructure for building and scaling AI-native service businesses.

Nervous System for Physical AI

Autonomous IT Delivery

The AI gateway for cheaper, faster, permissioned agents.

Expert computer-use data for frontier AI labs

Scale AI scientists whose own breakthroughs accelerate the next.

Full Stack Pharmaceutical Company for Personalized Peptides and GLP-1s

Training company-specific models that approve AI actions.

agents for the rest of us

Model Agnostic AI coworker in Slack

Agentic OS for e-commerce operations

The market behind AI hardware.

New semiconductors that merge compute and vision

The social trading app for stocks, memes, and perps

Quant Neolab building self-improving agents from quant data

AI tools for the chips your AI runs on

The harness company

Lightning fast chips with hardcoded AI models

Monetize your agent's traces.

The company brain for construction companies

Floating nuclear powered data centers at sea.

We make silicon on the Moon, to power everything in space.

APIs for robotics data teams to verify data quality for model training

AI agent that manages manufacturing operations over text

AI career agent that finds matching jobs & applies on your behalf

AI-native pharma company

AWS for Agents

The open source AI teammates for your company.

Modernizing Chip Manufacturing Infrastructure

cards for AI agents

Custom Model Factory For Cheaper, Better, Faster AI

Effortlessly deploy cloud software factories.

The frontier data platform for health and biological AI

The AI-native contact center

Connect your agents to the stock market

Watch and create anime

The cheapest, fastest inference cloud

A cloud devbox that feels local

AI-native BPO for enterprise order-to-cash

AI Operating System for Wholesale Distribution

Organizing company knowledge

OpenRouter for Agent Tools

We sequence your gut and build the probiotics it’s missing

We make sure every factory in the world builds without mistakes.

We make law firms AI-native.

Turns real businesses into robotics data vendors

Superintelligent health insurance that keeps employees healthy

We are a multi-strategy trading firm that trains AI traders.

The AI BPO for financial servies, run by computer-use agents

Reliable and safe data engineering and data science agents

Military exoskeletons

Building drone swarms that hunt hidden enemies.

AI engineer that debugs and fixes production incidents in realtime

24/7 Personal Health & Longevity Companion

AI-native accounting firm.

We are building an AI-native telemedicine clinic for addiction. 🌻

AI Agents to Make Local Gov Efficient

Financial infrastructure for family caregiving

Open source AI gateway that turns your traffic into better models

The Bloomberg of Loans

Evals for humans

Simulating Agents Running Industrial Companies

Search Engine for the Physical World

Resistance free pesticides.

The AI-native radiology practice

We turn waste gases into supply-secure chemicals

Robots that learn on the job

Accurately simulate market response at scale

Real-world RL environments for robotics models

Locke powers agentic government work.

Self-optimizing neocloud that cuts LLM costs by 100x

The Media Engine of the AI Era

AI-native materials discovery powered by unpublished experimental data

AI for Construction's Back Office

Autoresearch as a service: we solve your hardest measurable problems

The AI-Native Decision Layer for Health Insurance

Making chemicals 100,000x faster

AI that finds value creation opportunities across enterprise…

Research services for ChatGPT and Claude

The biggest crowdsourced benchmark for Computer-Use

Predict how market participants behave

Research lab building the most robotic household in the world

The World Model for Corporate Governance

AI-native back-office for banks and fintechs

Vaccines for any cancer or infection in weeks.

Market for future inference capacity

AI native platform for real estate closings

Derivatives Exchange for Compute

Network for Physical AI Data Business

AI That Operates Energy Infrastructure

AI-Native Insurance for Frontier Tech

Reliable infrastructure to build, deploy and manage real-world robots.

The AI operating system for radiology networks

The AI Coach for in person sales reps.

Dental Insurance

World Model for Freight

Florin is an AI-native insurance company that runs autonomously

AI-Native Engineering Firm designing Data Centers

AI-native procurement services for the physical economy

Legora for physical engineering firms

CrowdStrike for AI Agents

AI-Native Defense Contractor

Affordable, intelligent humanoid robots built to deploy at scale

AI-native sales agents that run marketplaces

Earned intelligence for every company

Engineering Intelligence and Token Optimization for the AI-Coding Era

Distributed, hardware-agnostic AI inference

AI-native OS for Real Estate Brokerages

Autonomous rovers to make the ‘Google Maps’ of underground utilities

One group chat to hear and steer your coding agents.

First AI-Native Medical Group for Mental Health

The AI Operating System for Auto Shops.

AI that runs factories.

AI-native insurance company for the compute economy

Agentic Hotel Operating System

AI agents that run small businesses

AI-native retrieval engine for medical records

Human as API for robots

Platform + FDEs that rebuild enterprises agent-first

The customer brain that connects data to explain customer behavior

Robotic factories that build robots

AI agents to run primary healthcare operations

The secure training data R&D engine for physical AI

Build everyday back-office agents on one live model of your books

Healthcare AI

Hotels that run themselves

The Git forge for the next hundred billion commits

AI-native gaming platform turning every game into an RL environment

Industrial Controllers built for AI

AI for high volume GTM Engineering

Host a Poker Club and Make Money

First Zero-human Accounting Firm

AI iOS assistant that instantly uses voice and video to take action

Combining open-source AI models for better answers at lower cost

Building robots to automate wetlabs

Deploying robots to replace workers in hazardous spaces

Extrapolative AI to unlock First-in-Class drugs

Metal manufacturing, faster, cheaper, and more versatile.

Hosting platform for software you can't afford to have hacked

Least cost routing system to reduce 70%+ token spend

AI-native test infrastructure layer for hardware companies

The IDE for Tokenmaxxers

Autonomous offensive security agents. The best defense is offense

Autopilot for Flight Operations

Databricks for Enterprise Codebases

We help startups win gov contracts

We turn company data into training data

AI chips for ultra-fast training and inference

AI For The Skilled Workforce

Virtual Reality for Training Robots

RL post-training for science reasoning and performance engineering

Legora for commercial insurance carriers

Multiplayer workspace for agents and humans

Building Autonomous Research Agents for Trading

Drone swarm defence at a small-unit level

Frontier grows scalable biological brains as an ML training substrate

OpenClaw for manufacturers

AI Brokers for Industrial Trade

AI agents for compliance at institutional trading firms

Robotic crews for large-scale infrastructure construction

Making Diamond Semiconductors

AI collections agency for late stage portfolios

AI that turns any camera to an autonomous worker with real-time vision

API-first tax engine for CPA firms and developers

The AI-native property management company for short-term rentals

Using VLMs to Catch Damage

Agentic procurement & inventory for deep tech teams.

AI that finds and fixes OS-level vulnerabilities across device fleets

AI employees that run home appliance repair companies

We help lawyers start and scale AI-native law firms.

Robots for waste manipulation

Robots to maintain and assemble data centers

Automatic Diagnosis & Fix for Industrial Automation Cells

Mass-produced AI strike systems and Counter-UAS

AI cybersecurity for financial institutions' digital assets

Drop-in robotic labor that works on Day 1

Mass-producing and financing micro data center incredibly quickly.

Instant healthcare for all, starting with work comp

The AI-native trading company: factory prices, delivered, one number

We help Fortune 500 companies hedge their supply chain risk

AI-native debt collection company

AI-controlled optical switching for AI clusters

Vibecode + deploy HIPAA-compliant internal tools, no eng team needed

AI brain for creators that runs their social content

Autonomous Hardware Testing

USA-made magnetics for robotics and defense.

AI-native freight brokerage

Supply chain compliance and cost savings