Y Combinator (YC)

Rasyn gives chemists a chat interface to run real chemistry software tools on their own hardware.

Lemma monitors AI agents in production and surfaces semantic failures that ordinary system metrics can miss.

Cloud infrastructure for validating and testing AI-generated code faster

Builds infrastructure for training and serving personally trainable AI agents

AI-native clearinghouse automating insurance verification and policy workflows

Builds AI agents that discover and accelerate new materials for semiconductor chips

Provides infrastructure for AI agents to automate company setup and operations

AI agents that gather property records, prepare real estate contracts and track transactions to closing.

Vector Legal combines lawyers, paralegals and custom AI to deliver startup legal services and technology-enabled workflows.

Builds precision strike and counter-UAS systems for allied militaries

Deploys AI agents automating enterprise operations across voice, email and documents

Andromeda Surgical develops autonomous surgical robots combining anatomical mapping and surgeon oversight, initially for prostate enucleation.

Provider of unified telematics integration technology transforming operations across insurance, fleet management and logistics companies

Relationship intelligence platform for enterprise revenue teams

AI platform automating back-office knowledge work for commercial real estate teams

Building a new way to understand the physical world

Healia is a healthcare benefits platform built for dual-income families.

Intelligent email inbox that prepares work proactively

AI startup automating customer-facing operations with AI agents

Automates the financial infrastructure of American healthcare

AI software creation platform for building full-stack, production-ready web and mobile applications

Bunkerhill Health builds an agentic AI platform for health systems to turn their ideas into reality

Hadrius provides an AI-native compliance infrastructure for financial services firms

Building a safer world by deploying low-cost air defense systems at scale

Makes open models effortless to use for developers

Builds AI agents for autonomous accounting tasks

Develops AI infrastructure for secondhand clothing industry

Automates accounting and back-office work for construction contractors using AI

AI-native observability platform for fast-moving engineering teams

Provides evaluation platform for voice AI quality