Home· YC AI· Winter 2025
Y COMBINATOR · W2025

YC Winter 2025 AI Companies

Every AI company in Y Combinator's Winter 2025 batch — 84 startups, 84 still active, 0 acquired. Team sizes, verticals, and locations.

Companies
84
Active
84
Acquired
0
Headcount
480
Dossiers
0
Verticals in this batch 79 tracked
b2b30 saas20 generative ai9 developer tools8 fintech7 healthcare7 analytics6 consumer5
All 84 companies largest first
AfterQuery
Applied research lab curating data solutions for foundation model…
W2025 Est. 2025 30 people San Francisco
Spott
AI-native ATS/CRM for recruiting firms
W2025 Est. 2024 25 people
Harper
AI-native commercial insurance brokerage
W2025 Est. 2024 25 people San Francisco
Delineate
Agents for Accelerated Clinical Trial Design
W2025 Est. 2024 20 people Boston
SalesPatriot
AI powered operating system for distributors and OEMs
W2025 Est. 2024 15 people San Francisco
hud
Platform for building RL environments and evals
W2025 Est. 2025 15 people San Francisco
Contrario
AI recruiting platform powered by expert recruiters
W2025 Est. 2025 15 people San Francisco
Pickle
Where your life context becomes understanding.
W2025 Est. 2024 15 people San Francisco
Toothy AI
AI for insurance verification & billing at dental clinics
W2025 Est. 2024 15 people San Francisco
Calltree
Enterprise-grade AI support reps for call centers
W2025 Est. 2025 14 people San Francisco
Cifrato
AI Accountant for Accounting Firms
W2025 Est. 2025 13 people Bogotá
Weave
AI to understand engineering work
W2025 Est. 2024 13 people San Francisco
Mentra
Building the open source smart glasses operating system.
W2025 Est. 2024 12 people San Francisco
Leaping AI
Voice AI agents to automate call centers (digital call center workers)
W2025 Est. 2023 11 people San Francisco
Proception Inc
Making humanoids dexterous enough to thread a needle
W2025 Est. 2024 10 people San Francisco
YouShift
The OS for hospital workforce management
W2025 Est. 2024 10 people New York
Scout
AI-powered student information system for K-12 schools
W2025 Est. 2024 8 people New York
Woz
Claude Code plugin that reduces token consumption and cost by 50%
W2025 Est. 2024 8 people San Francisco
Mastra
The Javascript framework for building AI agents, from the Gatsby devs
W2025 Est. 2024 8 people San Francisco
Confident AI
The LLM Eval and Observability Platform for AI Quality
W2025 Est. 2024 7 people San Francisco
Browser Use
Leading open-source web agent project with 50k stars in 3 months
W2025 Est. 2024 7 people San Francisco
Artificial Societies
We build networks of AI personas that simulate stakeholder opinions
W2025 Est. 2024 6 people London
Trata
AI-powered research desk for hedge funds
W2025 Est. 2025 6 people New York
Vetnio
AI Copilot that automates admin work for veterinary professionals
W2025 Est. 2024 6 people
Osmosis
Reinforcement Learning (RL) for AI Agents
W2025 Est. 2024 6 people San Francisco
Pluto
Regulated derivatives exchange
W2025 Est. 2024 5 people New York
Rally
Financial OS for Modern Fleets
W2025 Est. 2025 5 people Berlin
Alice.tech
AI-driven exam prep
W2025 Est. 2024 5 people Copenhagen
Asteroid
AI Browser Workforce for Operations Teams
W2025 Est. 2024 5 people San Francisco
Promptless
An AI teammate that automatically updates your customer-facing docs
W2025 Est. 2024 5 people San Francisco
Stillwind
Autonomous Electrical Engineering
W2025 Est. 2024 4 people Zürich
Closure
We help law enforcement solve crime
W2025 Est. 2024 4 people New York
Mundo AI
High Quality Multilingual Training Data for AI Models
W2025 Est. 2024 4 people San Francisco
Bluebook
AI for accounting
W2025 Est. 2024 4 people San Francisco
Nitrode
Data for reasoning agents in dynamic environments
W2025 Est. 2024 4 people San Francisco
superglue
AI that fixes enterprise glue
W2025 Est. 2024 4 people San Francisco
Onlook
Cursor for Designers
W2025 Est. 2024 4 people San Francisco
Mecha Health
Foundation models to automate x-ray analysis for radiologists
W2025 Est. 2024 4 people San Francisco
Adam
AI Powered CAD
W2025 Est. 2025 4 people San Francisco
Lucidic AI
AI Agent Training via Simulations
W2025 Est. 2025 4 people San Francisco
Edexia
AI Teacher Assistant for Grading Essays
W2025 Est. 2023 4 people San Francisco
Overstand Labs
Navigate any set of data - no matter how large - in minutes.
W2025 Est. 2024 4 people New York City
Trim
A foundation model for physics.
W2025 Est. 2024 3 people San Francisco
Rebolt
AI-Powered Company OS
W2025 Est. 2025 3 people San Francisco
Candor
Insider Threat for the Modern Enterprise
W2025 Est. 2024 3 people San Francisco
Outship
Hire amazing engineers by seeing how they use AI
W2025 Est. 2025 3 people San Francisco
Roark
Test, monitor, and improve your voice agents
W2025 Est. 2025 3 people San Francisco
Pinch
Real-time AI Voice Translation for Developers
W2025 Est. 2025 3 people
Cenote
AI agents that convert and retain patients for digital clinics
W2025 Est. 2024 3 people San Francisco
a0.dev
We make mobile apps using AI.
W2025 Est. 2025 3 people San Francisco
Gale
Fast and Data-Driven Immigration Platform
W2025 Est. 2024 3 people San Francisco
Mesh
Eliminating accrual spreadsheets for faster month-end
W2025 Est. 2025 3 people San Francisco
Swerve
Chat with AI Characters
W2025 Est. 2025 2 people San Francisco
Tejas AI
Risk Decisioning Platform for Banks
W2025 Est. 2025 2 people San Francisco
Praxim
The agentic AI Word editor
W2025 Est. 2025 2 people San Francisco
Vocality Health
Voice AI for medical language translation
W2025 Est. 2025 2 people San Francisco
Truffle AI
AWS for AI Agents
W2025 Est. 2024 2 people San Francisco
Lopus
Growth Operations Data Platform
W2025 Est. 2024 2 people San Francisco
TamLabs
AI for Professional Services
W2025 Est. 2025 2 people San Francisco
Verbiflow
People search that works
W2025 Est. 2024 2 people San Francisco
Maive
AI for Home Services
W2025 Est. 2025 2 people San Francisco
Agentin AI
AI Agents that automate enterprise software processes
W2025 Est. 2024 2 people San Francisco
Olive
Curated stories, every day
W2025 Est. 2024 2 people San Francisco
Exla
An SDK to run transformer models anywhere
W2025 Est. 2025 2 people San Francisco
Cardamon
AI compliance co-pilot for regulated financial businesses
W2025 Est. 2025 2 people London
Dartboard Energy
AI Analyst for Electricity Markets
W2025 Est. 2024 2 people San Francisco
Harbera
AI Healthcare Provider Credentialing Software
W2025 Est. 2025 2 people San Francisco
Oki
Personalized Updates on Company Progress
W2025 Est. 2025 2 people San Francisco
Candor
We help companies win government funding with AI
W2025 Est. 2025 2 people San Francisco
Tweeks.io
Lovable for Chrome Plugins
W2025 Est. 2025 2 people San Francisco
Sennu AI
We turn traditional companies into AI companies
W2025 Est. 2025 2 people San Francisco
Sherpa Labs
The AI Data Team
W2025 Est. 2025 2 people New York City
Riviera
AI Employees for Hotels
W2025 Est. 2024 2 people San Francisco
Dex
The AI Coworker in Chrome
W2025 Est. 2025 2 people San Francisco
Quantstruct
AI documentation engineer – test & autoimprove stale product docs
W2025 Est. 2025 2 people San Francisco
Outlit
Customer Context for Agents
W2025 Est. 2024 2 people San Francisco
Caseflood.ai
How elite law firms do intake
W2025 Est. 2025 2 people San Francisco
Cuckoo Labs
Real-time AI translator for global sales and marketing
W2025 Est. 2024 2 people
CopyCat
AI agents built for insurance.
W2025 Est. 2024 2 people San Francisco
Astro
The world’s first AI energy developer
W2025 Est. 2024 1 people New York City
General Trajectory
AI for the physical world
W2025 Est. 2024 1 people San Francisco
Wildcard
AEO/GEO for E-Commerce and Retail
W2025 Est. 2025 1 people San Francisco
Tergle
AI Agents for Audit
W2025 Est. 2025 New York City
Ergo
AI agents and unified data layer for revenue teams
W2025 Est. 2025 San Francisco
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