πŸš€ Y CombinatorΓ—β˜€οΈ Summer 2025

YC S25: The Dawn of the Autonomous Agentic Cohort

168 startups in this batch

What Was YC SUMMER 2025?

YC Summer 2025 was the definitive cohort of the Agentic Pivot, occurring just as foundational models reached the reliability required for autonomous action. The macro environment was defined by a shift from "AI as a feature" to AI as a workforce, with YC funding a record number of startups focused on replacing high-cost human workflows in legacy sectors. This was the era where the industry moved past chat interfaces toward headless, autonomous systems.

What These 168 Startups Built and Proved

This batch proved that the most resilient business models were those that targeted high-stakes vertical bottlenecks, such as insurance underwriting and dental procurement. They validated that enterprises were willing to pay a premium for agentic infrastructureβ€”specifically tools that allowed AI to communicate via legacy protocols like email or voice. The success of these companies showed that the market didn't want better tools for humans; it wanted software that performed the work itself.

What Failed and What to Learn From It

Many startups in this cohort eventually struggled because they built thin orchestration layers that were easily replaced when foundational model providers released native agentic capabilities. The failure point for many was over-indexing on infrastructure before proving the core utility of the agent. A builder today should learn that defensibility comes from deep integration into the messy reality of business operations, not just the elegance of the AI simulation.

The Relaunch Opportunity in 2026

The 2026 opportunity lies in sovereign, local-first agentic networks for highly regulated niches. While S25 focused on cloud-based enterprise agents, a solo builder can now use lightweight, open-source models to relaunch privacy-centric versions of these workflows. The wedge today is building hyper-specific agentic micro-SaaS that solves one unglamorous taskβ€”like dental supply arbitrageβ€”without the data-privacy overhead of the 2025 giants.

AcrelyYC

active

Enterprise Voice Agents

πŸ“ San FranciscoπŸ“… 2025

AI underwriting for insurance

πŸ“ San FranciscoπŸ“… 2025

The simulation and evaluation engine for AI agents

πŸ“ UnknownπŸ“… 2025

Email Inboxes for AI Agents

πŸ“ San FranciscoπŸ“… 2025

AlaraYC

active

Procurement Platform for Dental Offices

πŸ“ UnknownπŸ“… 2025

Autonomous undersea vehicles to deter maritime invasions.

πŸ“ PhiladelphiaπŸ“… 2025

AlterYC

active

Secure access control and authorization platform for agent workflows

πŸ“ New YorkπŸ“… 2025

AlturYC

active

Voice AI Agents for Debt Collection

πŸ“ Mexico CityπŸ“… 2025

AmbralYC

active

Customer Mission Control

πŸ“ UnknownπŸ“… 2025

AprilYC

active

Voice AI Executive Assistant

πŸ“ San FranciscoπŸ“… 2025

AstorYC

active

AI advisor for retail investors

πŸ“ San FranciscoπŸ“… 2025

AI Agents for Mobile QA

πŸ“ UnknownπŸ“… 2025

AutumnYC

active

Billing infrastructure for AI

πŸ“ UnknownπŸ“… 2024

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

πŸ“ UnknownπŸ“… 2025

AventYC

active

AI agents for industrial commerce

πŸ“ UnknownπŸ“… 2025

AI platform that automates chemical experiments with one-click execution and real-time insights for pharma and biotech.

bitrigYC

active

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

πŸ“ UnknownπŸ“… 2025

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

πŸ“ San FranciscoπŸ“… 2026

RNA-based AI for better drugs and smarter clinical trials.

πŸ“ San FranciscoπŸ“… 2025

BlueYC

active

The first voice assistant that can control every app on your iPhone

πŸ“ UnknownπŸ“… 2025

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

πŸ“ San FranciscoπŸ“… 2025

burntYC

active

Agentic Operating System for Food Supply Chain

πŸ“ San FranciscoπŸ“… 2025

CactusYC

active

Kernels & Engine for running AI on consumer devices.

πŸ“ San FranciscoπŸ“… 2025

AI agents for in-person sales teams, starting with coaching

πŸ“ San FranciscoπŸ“… 2025

AI scribe for Ambulance Reports

πŸ“ New YorkπŸ“… 2025

Replacing the restaurant phone line with Voice AI

πŸ“ San FranciscoπŸ“… 2025

Database of every product on the internet

πŸ“ New YorkπŸ“… 2025

ClodoYC

active

Vibe GTM. Execute your outbound ideas with just a prompt

πŸ“ San FranciscoπŸ“… 2025

CloseraYC

active

AI employees for commercial real estate

πŸ“ San FranciscoπŸ“… 2025

AI-native video production software that automates post-production

πŸ“ San FranciscoπŸ“… 2025

ComenaYC

active

AI agents for distributors and manufacturers to automate order entry.

πŸ“ UnknownπŸ“… 2025

Visibility and Controls for Browser Agents

πŸ“ San FranciscoπŸ“… 2025

The world's first AI-maximalist pharma company

πŸ“ UnknownπŸ“… 2025

Self learning computer use agent for developers

πŸ“ San FranciscoπŸ“… 2025

AI DevOps Engineer

πŸ“ San FranciscoπŸ“… 2025

Connect any LLM to any MCP tools and create complex agents in minutes.

πŸ“ San FranciscoπŸ“… 2025

Help AI data centers unlock more compute and become more efficient

πŸ“ San FranciscoπŸ“… 2025

Frontier Intelligence. On Any Device.

πŸ“ UnknownπŸ“… 2025

World's largest crowdsourced benchmark for AI-generated design

πŸ“ San FranciscoπŸ“… 2025

DoeYC

active

The boring stuff, handled. Everything else, supercharged.

πŸ“ San FranciscoπŸ“… 2025

Computer vision for bulk inventory tracking

πŸ“ OlatheπŸ“… 2025

Reshoring critical metal production

πŸ“ AlamedaπŸ“… 2025

EdenYC

active

Autonomous Marketing AI for Ecommerce Brands

πŸ“ New YorkπŸ“… 2025

EffiGovYC

active

The AI OS for Cities

πŸ“ San FranciscoπŸ“… 2025

Cursor for Firmware

πŸ“ San FranciscoπŸ“… 2025

Open-source, local-first apps that share a memory.

πŸ“ San FranciscoπŸ“… 2025

F2YC

active

The AI platform for private markets investors

πŸ“ New YorkπŸ“… 2025

F4YC

active

Automating compliance checks for engineering drawings

πŸ“ San FranciscoπŸ“… 2025

FintoYC

active

AI accounting for enterprise finance teams

πŸ“ UnknownπŸ“… 2025

FlaiYC

active

We Bring Customers to Your Dealership

πŸ“ UnknownπŸ“… 2025

Optimizing fleet planning with data driven algorithms

πŸ“ New YorkπŸ“… 2025

FlootYC

active

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

πŸ“ UnknownπŸ“… 2025

Helping scientists and engineers run experiments with AI.

πŸ“ San FranciscoπŸ“… 2025

Waymo for excavators

πŸ“ San FranciscoπŸ“… 2025

FreyaYC

active

Voice AI for Enterprises

πŸ“ San FranciscoπŸ“… 2025

FrizzleYC

active

AI Grading for Teachers

πŸ“ San FranciscoπŸ“… 2025

FulcrumYC

active

The agentic debugger for AI systems

πŸ“ San FranciscoπŸ“… 2025

GETASAPYC

active

8-hour Produce Distribution for Retailers of Any Size

πŸ“ San FranciscoπŸ“… 2025

Phishing Simulations for the AI era

πŸ“ New YorkπŸ“… 2025

gitdotYC

active

A better GItHub

πŸ“ UnknownπŸ“… 2025

GolpoYC

active

Most Powerful AI Video Gen Model for Explainer Videos From Documents

πŸ“ San FranciscoπŸ“… 2025

GoRiffYC

active

Cursor for music production

πŸ“ San FranciscoπŸ“… 2025

Data and RL environments to automate knowledge work

πŸ“ San FranciscoπŸ“… 2025

HeraYC

active

AI Motion Designer

πŸ“ UnknownπŸ“… 2025

HumoniqYC

active

AI-Native BPO for travel & transport

πŸ“ San FranciscoπŸ“… 2025

Open-source AI notetaker for the enterprise

πŸ“ UnknownπŸ“… 2025

IdlerYC

active

Reinforcement learning environments.

πŸ“ UnknownπŸ“… 2025

The World's First AI Ad Network.

πŸ“ UnknownπŸ“… 2025

The frontier lab for human simulation

πŸ“ New YorkπŸ“… 2025

Build software that never breaks

πŸ“ New YorkπŸ“… 2025

AI Insurance for hardware.

πŸ“ UnknownπŸ“… 2025

AI agents for property accounting

πŸ“ UnknownπŸ“… 2025

The AI-Native Jira

πŸ“ San FranciscoπŸ“… 2025

JuxtaYC

active

A hardware-free GPS alternative that tracks movement anywhere on Earth using device-embedded sensors and neural networks.

KalindaYC

active

Deep research for class action law firms

πŸ“ UnknownπŸ“… 2025

KernelYC

active

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

πŸ“ San FranciscoπŸ“… 2025

AI Agents for OEMs

πŸ“ San FranciscoπŸ“… 2025

Convert textual content into explainer videos in < 15s

πŸ“ San FranciscoπŸ“… 2025

Voice AI for booking freight

πŸ“ San FranciscoπŸ“… 2025

LarkYC

active

Billing for modern pricing models

πŸ“ San FranciscoπŸ“… 2025

LilacYC

active

Spot GPUs that use idle GPUs from enterprises

πŸ“ San FranciscoπŸ“… 2025

Liva AIYC

active

Audio & Video Data

πŸ“ San FranciscoπŸ“… 2025

LocataYC

active

AI Referral Automation for Primary Care Clinics

πŸ“ New YorkπŸ“… 2025

LotasYC

active

AI for Data Science and 3D

πŸ“ San FranciscoπŸ“… 2025

AI Powered Patient Insights

πŸ“ San FranciscoπŸ“… 2025

LuminalYC

active

Making AI run fast on any hardware.

πŸ“ UnknownπŸ“… 2025

AI Tax Preparer for CPA firms

πŸ“ UnknownπŸ“… 2025

Simple platform to create data for AI

πŸ“ UnknownπŸ“… 2025

mcp-useYC

active

Open-source dev tools and infrastructure for MCP.

πŸ“ UnknownπŸ“… 2025

MeteorYC

active

An AI-Native Browser

πŸ“ San FranciscoπŸ“… 2025

MetisYC

active

Infrastructure to build reliable agents

πŸ“ San FranciscoπŸ“… 2025

MimosYC

active

Helping companies rank in AI search

πŸ“ UnknownπŸ“… 2025

AI Agents for E-commerce Customer Support

πŸ“ UnknownπŸ“… 2025

All-in-one TypeScript cloud for production AI apps

πŸ“ San FranciscoπŸ“… 2025

An expert for your spatial data

πŸ“ San FranciscoπŸ“… 2025

MotivesYC

active

Consumer focus groups run by AI

πŸ“ LondonπŸ“… 2025

MunifyYC

active

The Cross-Border Neobank for the Middle East

πŸ“ RemoteπŸ“… 2025

AI platform to grow and to optimize car washes

πŸ“ UnknownπŸ“… 2025

Implantable microchips and AI for cattle monitoring

πŸ“ San FranciscoπŸ“… 2025

NixoYC

active

The first ops platform for forward deployed engineers

πŸ“ UnknownπŸ“… 2025

NormalYC

active

Deploying and integrating useful robots

πŸ“ San FranciscoπŸ“… 2025

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

πŸ“ UnknownπŸ“… 2025

NotteYC

active

Reliable Web Agents for Enterprise

πŸ“ San FranciscoπŸ“… 2025

The AI data analyst for biology labs

πŸ“ San FranciscoπŸ“… 2025

The modern factory for fast, low-cost metals.

πŸ“ DetroitπŸ“… 2025

NozomioYC

active

Context augmentation for agents

πŸ“ UnknownπŸ“… 2025

NuntiusYC

shutdown

Making Models Follow Rules.

πŸ“ San FranciscoπŸ“… 2025

OkibiYC

active

Build AI coworkers using natural language, it's Lovable for agents

πŸ“ San FranciscoπŸ“… 2025

OmnaraYC

active

Mobile & Voice Interface for Claude Code

πŸ“ San FranciscoπŸ“… 2025

Analyze any footage, without training a model

πŸ“ VancouverπŸ“… 2025

Write, learn, and connect ideasβ€”all in one place

πŸ“ San FranciscoπŸ“… 2025

Agentic sales enrichment spreadsheet

πŸ“ UnknownπŸ“… 2025

OutroveYC

active

Ultra-realistic AI Recruiter

πŸ“ San FranciscoπŸ“… 2025

AI Powered Medical Billing

πŸ“ New YorkπŸ“… 2025

PalaceYC

active

Palace plans, coordinates, and executes daily ops for trucking fleets

πŸ“ New YorkπŸ“… 2025

PallyYC

active

Intelligent Unified Inbox + Personal CRM

πŸ“ San FranciscoπŸ“… 2025

PalomaYC

active

AI-native CRM for putting post-sales operations on autopilot

πŸ“ San FranciscoπŸ“… 2025

PanelsYC

active

Audio Data for AI Labs

πŸ“ San FranciscoπŸ“… 2025

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

πŸ“ San FranciscoπŸ“… 2025

Infrastructure for hospitals to monitor and deploy clinical AI

πŸ“ UnknownπŸ“… 2025

Helping commercial real estate brokers find and close more deals.

πŸ“ San FranciscoπŸ“… 2025

America's Golden Dome for Drones

πŸ“ UnknownπŸ“… 2025

Automating away admin for behavioral health clinics

πŸ“ ChicagoπŸ“… 2025

PhasesYC

active

Automating clinical trials, starting with patient recruitment.

πŸ“ San FranciscoπŸ“… 2025

AI companion that helps you learn languages

πŸ“ UnknownπŸ“… 2025

Sandboxes for AI agents

πŸ“ San FranciscoπŸ“… 2025

PleomYC

active

Agentic Business Intelligence

πŸ“ UnknownπŸ“… 2025

PondYC

active

Superhuman for text messages

πŸ“ San FranciscoπŸ“… 2025

The autonomous engineering organization

πŸ“ San FranciscoπŸ“… 2025

AI phone agents for Commercial Lending

πŸ“ San FranciscoπŸ“… 2025

ReacherYC

active

We automate creator marketing for the world's largest brands

πŸ“ San FranciscoπŸ“… 2025

AI social app for women

πŸ“ San FranciscoπŸ“… 2025

RellingYC

active

RL and Data Infrastructure for Robotic World Models

πŸ“ San FranciscoπŸ“… 2025

RidYC

active

Sell with a text.

πŸ“ San FranciscoπŸ“… 2025

AI agents that automate administrative work across college campuses.

πŸ“ UnknownπŸ“… 2025

RowFlowYC

active

Replacing forms with AI conversations

πŸ“ New YorkπŸ“… 2025

RuvoYC

active

The Global Dollar App for Brazil

πŸ“ SΓ£o PauloπŸ“… 2025

SagekitYC

active

AI workspace for research and writing

πŸ“ San FranciscoπŸ“… 2025

SerafisYC

active

The AI knowledge graph for institutional investors

πŸ“ San FranciscoπŸ“… 2025

ShorYC

active

The fastest, most affordable payroll for global teams

πŸ“ San FranciscoπŸ“… 2025

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

πŸ“ DublinπŸ“… 2025

SiraYC

active

AI Native Rippling for Deskless Workers

πŸ“ UnknownπŸ“… 2025

SkopeYC

active

Build a more profitable law firm with AI.

πŸ“ San FranciscoπŸ“… 2025

SlashyYC

active

Cursor for Email

πŸ“ San FranciscoπŸ“… 2025

AI coworkers for fraud and risk teams.

πŸ“ UnknownπŸ“… 2025

SolvaYC

active

Automates insurance claims and stops incorrect payouts

πŸ“ UnknownπŸ“… 2025

AI powered brokerage reducing residential rental commissions in NYC…

πŸ“ New YorkπŸ“… 2025

The frontend coding agent for real codebases.

πŸ“ UnknownπŸ“… 2025

Building tiny frontier AI models that run on edge devices

πŸ“ San FranciscoπŸ“… 2025

AI-native ERP for food wholesalers

πŸ“ San FranciscoπŸ“… 2025

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

πŸ“ San FranciscoπŸ“… 2024

Synthetic Users to Simulate Real Users

πŸ“ San FranciscoπŸ“… 2025

TectoAIYC

active

A Platform for AI Governance

πŸ“ San FranciscoπŸ“… 2025

TesoraYC

active

AI-Native Software for Operations and Finance Teams

πŸ“ San FranciscoπŸ“… 2025

We help products get mentioned in ChatGPT.

πŸ“ UnknownπŸ“… 2025

Physics-based foundation models for CAD optimization.

πŸ“ UnknownπŸ“… 2025

TraceYC

active

Workflow automation that routes tasks to humans and AI

πŸ“ San FranciscoπŸ“… 2025

Open source AI agents auto-fix your production bugs

πŸ“ UnknownπŸ“… 2025

Automatically blocking risky behavior with real-time governance agents

πŸ“ San FranciscoπŸ“… 2025

Foundational Voice Models for regional languages

πŸ“ UnknownπŸ“… 2025

VeritusYC

active

AI agents for the consumer lending industry

πŸ“ San FranciscoπŸ“… 2025

AI models that teach robots new skills in hours

πŸ“ San FranciscoπŸ“… 2025

Lovable, n8n and a database all in one platform

πŸ“ UnknownπŸ“… 2025

AI regulatory drafting and compliance

πŸ“ AustinπŸ“… 2025

WaferYC

active

AI that makes AI fast

πŸ“ San FranciscoπŸ“… 2025

WaylineYC

active

AI voice for property managers

πŸ“ UnknownπŸ“… 2025

WedgeYC

active

Palantir for Healthcare AI Agents

πŸ“ San FranciscoπŸ“… 2025

Auto-optimizer for AI agents

πŸ“ New YorkπŸ“… 2025