What they do:
AI-native Zocdoc
Quick facts:
HQ: New York, NY, United States
Y Combinator Spring 2025 Startups
This list has 144 startups and was last updated on Oct 15, 2026. 60 of them are hiring right now. Biggest hubs: San Francisco (84), New York (20), and London (13). Largest teams: throxy, Auctor, and Synthio Labs. Latest round: Sygaldry Technologies raised $139M (Apr 14, 2026).
144 startupsPage 4 of 4
What they do:
Grammarly for Math ✏️
Quick facts:
HQ: London, United Kingdom
What they do:
Reinforcement learning as a service
Quick facts:
HQ: San Francisco, CA, United States
What they do:
AI workers for Skilled Nursing and Senior Living Operations
Quick facts:
HQ: San Francisco, CA, United States
What they do:
AI-native operating system for vehicle fleet management
Quick facts:
What they do:
AI Workspace for Hospitality Commercial Teams
Quick facts:
HQ: New York, NY, United States
What they do:
Abundant Intelligence for Everyone
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Building reinforcement learning environments
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Distributed energy infrastructure unlocking grid power to data centers
Quick facts:
HQ: London, United Kingdom
What they do:
Robots for the inspection and maintenance of data centers
Quick facts:
HQ: Boston, MA, United States
What they do:
Recursive self improving harnesses and models
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Life sciences reagents and software
Quick facts:
HQ: Boston, MA, United States
What they do:
Valuemate automates real estate appraisals with AI
Quick facts:
HQ: New York, NY, United States
What they do:
Make real life a video game
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Experiment tracking for training ML models
Quick facts:
HQ: London, United Kingdom
What they do:
All-In-One AI Growth Partner. Built for Trades.
Quick facts:
HQ: San Francisco, CA, United States
What they do:
AI + human review to solve data cleaning - accessible via API or Excel
Quick facts:
HQ: New York, NY, United States
What they do:
The AI-Native Consumer + Plaintiff Law Firm
Quick facts:
HQ: Boston, MA, United States
What they do:
AI agents for web testing
Quick facts:
HQ: San Francisco, CA, United States
What they do:
The agentic CRM for blue-collar services
Quick facts:
HQ: New York, NY, United States
What they do:
Agentic AI Security and Governance
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Tools for the next era of physical automation.
Quick facts:
HQ: Germany
What they do:
Agents that improve
Quick facts:
HQ: New York, NY, United States
What they do:
Units builds full-stack AI education infrastructure.
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Your new AI-powered math tutor.
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Managed GPU-accelerated Spark + SQL at 2x speed and half the cost
Quick facts:
HQ: New York, NY, United States
What they do:
Accelerating world models.
Quick facts:
HQ: San Francisco, CA, United States
YC X25Early stage
Quick facts:
HQ: San Francisco, CA, United States
Blaxel
Acquired
What they do:
The infrastructure for autonomous agents
Quick facts:
HQ: San Francisco, CA, United States
Galen AI
Acquired
What they do:
Personal AI healthcare agent, powered by clinical and wearable data.
Quick facts:
HQ: San Francisco, CA, United States
Kirana AI
Acquired
What they do:
AI manager for physical stores
Quick facts:
HQ: New York, NY, United States
Propolis
Acquired
What they do:
Hands off QA via intelligent browser agents.
Quick facts:
HQ: New York, NY, United States
BitPatrol
Acquired
What they do:
AI-powered code security
Quick facts:
HQ: New York, NY, United States
Percival
Shut down
What they do:
Accelerating data analysis for research
Quick facts:
HQ: San Francisco, CA, United States
Caucus
Shut down
What they do:
AI CRM for Government
Quick facts:
Kanava AI
Shut down
What they do:
Your First AI Sales Hire for Wholesale Distributors
Quick facts:
HQ: San Francisco, CA, United States