YC Spring 2026 (X26)
193 companies Y Combinator lists for Spring 2026, with what each one builds.
- Companies
- 193
- AI share
- Not enough tags yet
- Top sector
- Infrastructure
- 20 companies
- Second
- Engineering, Product and Design
- 14 companies
YC has tagged only 31.6% of this batch so far, so we don’t publish an AI share for it yet.
What’s in Spring 2026
Spring 2026 lists 193 companies so far (W26 had 197). The biggest themes by YC's tags are Developer Tools (11), Robotics (7), Infrastructure (6), AI Assistant (5) and Automation (4). The largest sectors are Infrastructure, Engineering, Product and Design, Manufacturing and Robotics and Marketing. 17.4% are based outside the US.
- Developer Tools · 11
- Robotics · 7
- Infrastructure · 6
- AI Assistant · 5
- Automation · 4
See YC's Spring 2026 Request for Startups · Breakout themes across batches
All Spring 2026 companies
193 companies
- 9 Mothers
Counter Drone Systems. $1.6m sales. We delivered for the DoW.
Defense19Austin, TX, USA - AbInitio Bio
The Intelligence layer for Drug Manufacturing
Drug Discovery and Delivery2Boston, MA, USA - Adialante
Cancer screening without barriers
Diagnostics4San Francisco, CA, USA - Advanced Metal Research
Machine intelligence for American Welding
Manufacturing and Robotics3Los Angeles, CA, USA - Aernata
Making clean fuels out of CO2.
Energy2San Francisco, CA, USA - AgentPhone
Phone Numbers for AI Agents
InfrastructureSan Francisco, CA, USA - AICE
Submarine drones for defense
Defense2Paris, Île-de-France, France - Akkari
Autonomous Customer Operations
B2B5San Francisco, CA, USA - Alchemize
Building AI Native Customs Brokerages
Supply Chain and Logistics2San Francisco, CA, USA - Allowance
The spend control layer for AI agents
Payments1San Francisco, CA, USA - Amboras
AI Native Shopify
B2B3San Francisco, CA, USA - Andco
Agents that build personal injury cases
Legal3San Francisco, CA, USA - Fintech2San Francisco, CA, USA
- ANORIA
The first wearable that reads your emotions to enhance your EQ.
Consumer Electronics5San Francisco, CA, USA - AntinuousAI
Autonomous research agents for R&D and applied science
B2B2San Francisco, CA, USA - Apollo Atomics, Inc.
We make the most compact nuclear reactors
EnergyBoston, MA, USA - AquaShield
AI water leak detection for buildings
Real Estate and Construction3San Francisco, CA, USA - Arctic Health
AI-native credentialing and contracting for healthcare
Healthcare Services4New York City, NY, USA - Arden
AI-native internal audit firm
Finance and Accounting2San Francisco, CA, USA - Ardent
Database sandboxes for Agents
Infrastructure3San Francisco, CA, USA - Arga Labs
Real-world sandboxes to test and train AI agents
B2B5Vancouver, BC, Canada - Arlo Industries
Track drones and missiles without radars - Accurate, Passive, Scalable
Defense3New York City, NY, USA - ArmatureAI
We get your product picked by coding agents.
Engineering, Product and Design3Paris, Île-de-France, France - Arzana
Adaptive AI built for manufacturers
Operations13New York City, NY, USA
Source: Y Combinator’s public company directory. Each company links to its YC profile. See how we count and what YC asked founders to build.