Y Combinator Summer 2025 companies

Al platform that makes social marketing as easy as running a Google…

Billing infrastructure for AI

Continual Learning for Agents

AI for account management and customer success

AI voice for property managers

Narrative intelligence for investors

Deployment intelligence for forward deployed engineers

Low-latency AI engine for mobile devices & wearables

Synthetic Users to Simulate Real Users

The AI forecasting company for global macro events.

AI companion that helps you learn languages

AI-powered insurance claims review

AI-Native Fresh Produce Logistics

An AI-Native Browser

AI Shopping Agent for Your Ecommerce Store

Compute substrate for AI agents

Enterprise Voice Agents

We help products get discovered & used by AI agents.

Long-horizon RL environments

Data and RL environments to automate knowledge work

Open source self-improving layer for AI agents

Email Inboxes for AI Agents

Automatically blocking risky behavior with real-time governance agents

RNA intelligence for precision medicine

AI advisor for retail investors

Book any load in 10 minutes

A better GItHub

Create Whiteboard Explainer Videos with AI from a Prompt or Document

International payroll, built for founders

Audio & Video Data

Sandboxes for AI agents

AI models that teach robots new skills in hours

Independent AI evaluations lab

Visibility and Controls for Browser Agents

The AI workspace for software implementations

Physics-based foundation models for CAD optimization.

The E2E testing layer for AI-driven development

Vibe code, test, and deploy Swift apps. All from your iPhone.

The AI OS for Cities

World's largest crowdsourced benchmark for AI-generated design

AI for quantitative trading

Turn maps into data

Agentic sales enrichment spreadsheet

Making Models Follow Rules.

AI that makes AI fast

Audio Data for AI Labs

Self learning computer use agent for developers

The Autonomous Product Management System

We automatically monetize idle GPUs

The World's First AI Ad Network.

Secure access control and authorization platform for agent workflows

Analyze any footage, without training a model

AI Grading for Teachers

Frontier Intelligence. On Any Device.

Manage a team of agents from your desktop

Code with local models, zero setup

AI-native ERP for food wholesalers

Robots, parts & RL envs & evals - delivered in 48 hrs / pickup in SF.

Frontier AI for Actuaries

Identity-aware VPN and proxy for remote access to anything, anywhere.

AI scribe for Ambulance Reports

Palantir for Healthcare AI Agents

Cursor for Email

video production software

The continuous oversight engine for clinical trials

Implantable microchips and AI for cattle monitoring

Firmware in minutes, not months - rigorously tested on real hardware

Building tiny frontier AI models that run on edge devices

Deep research for class action law firms

AI-native Red Teaming and Offensive Security

The AI verification layer for trusted clinical trials in India.

The boring stuff, handled. Everything else, supercharged.

AI-enabled Corporate Cards and Invoice Processing for Real Estate

Building onestop.sh

Context-aware orchestration between humans and AI.

The agentic debugger for AI systems

Making hard molecules for Pharma and Biotech

We Bring Customers to Your Dealership

Hardware-Aware AI for Embedded Software Development

Indexing human dialogue through digital products

ChatGPT's memory feature in an open, portable format

Database of every product on the internet

Your always-on red team.

Testing and certifying the hardware of the future

AI agents for distributors and manufacturers to automate order entry.

AI content manager that grows your company's online presence

product lab solving context in ai

The growth OS for plaintiff-side law firms

AI infrastructure for biosecurity

Evaluating humanoids in the real world

Drone submarines

Automates insurance claims and stops incorrect payouts

Automated clinical trial oversight and execution

America's Golden Dome for Drones

The AI data analyst for biology labs

Cloud infrastructure for MCP servers and Claude / ChatGPT apps.

The AI notepad that knows and works for you

deploying the first billion robots for manufacturing

Consumer focus groups run by AI

AI accounting for enterprise finance teams

Foundational models for risk and quality.

AI-powered accounting automation for construction and manufacturing

AI agents for E2E testing across mobile & web

The AI Explainer Video Maker

The Open-Source Alternative to Claude Managed Agents

AI agents that automate administrative work across college campuses.

AI Agents for E-commerce Customer Support

AI coworkers for fraud and compliance teams.

Procurement Platform for Dental Offices

The easiest way for non-coders to build apps with AI.

reinforcement learning environments

Truckload Planning at Machine Precision

AI-Native BPO for travel & transport

AI platform to grow and to optimize car washes

We audit medical claims for self-insured employers and health plans.

AI-native real estate services firm

Voice AI Agents for Debt Collection

AI sales simulations using your real deals

Infrastructure to build reliable agents

The GD&T Analysis Platform for Engineering Drawings

AI Native Rippling for Deskless Workers

The notebook that thinks with you.

The Cursor for Chip Design - Delivering Silicon-Ready Chip Designs…

The world's first AI-maximalist pharma company

Agentic Business Intelligence

AI Referral Automation for Primary Care Clinics

Your personal AI Assistant

Reliable Web Agents for Enterprise

AI Motion Designer

Replacing the restaurant phone line with Voice AI

We automate creator marketing for the world's largest brands

Crazy fast, open source infra for AI agents to use the Internet

Accurately measure and monitor bulk inventory

Turns products into CLIs and agents into customers

Building a GPS alternative 100x more powerful with no hardware needed.

Waymo for excavators

The Open Source Agentic IDE

Planet-scale people discovery.

Optimizing fleet planning with data driven algorithms

AI Tax Preparer for CPA firms

Build production-ready apps with AI

AI to run behavioral health programs better

Reshoring critical metal production

A Platform for AI Governance

Replacing forms with AI conversations

The Cross-Border Neobank for the Middle East

Give engineering, product, and design teams insight into unseen issues

AI powered brokerage reducing residential rental commissions in NYC…

Bizzy works 24/7 so you never miss a lead.

Secure frontier AI for government & adjacent knowledge work

Build AI agents for field technicians to diagnose and sell 10x better

Synthetic populations for decisions

AI agents for the consumer lending industry

The Global Dollar App for Brazil

AI agents for industrial commerce

Agentic Operating System for Food Supply Chain

Voice AI for Enterprises

Making AI run fast on any hardware.

IRL friendship app for women

Foundational Voice Models for regional languages

Digital transformation for real economy businesses

Your phone finally has someone to run it. Plug in Blue, just ask.

Supplying America's Industrial Base

The AI platform for private markets investors