Scale AI
The Data Engine that powers the most advanced AI models
Publicly reported investor
Y Combinator
Y Combinator is a publicly reported investor in 42 companies that are also in Sahin Boydas' public portfolio, as of October 2026: Scale AI, Kalshi and Magic, and 39 more.
This page collects the public evidence behind that overlap. Every company below has its own source-backed directory of publicly reported investors, and Y Combinator appears in each of those directories with a cited public source. The list is evidence-based and may not be complete: it includes only companies in Sahin Boydas' public portfolio where a cited source reports Y Combinator as an investor. It is not a cap table, and it carries no deal terms.
Public profile
Focus: All sectors, AI, SaaS, Fintech, Health, Hardware
Headquarters: San Francisco, CA
Founded: 2005
Companies
42 companies in the public portfolio, listed A–Z with each company's public one-liner, Category, Sub-Category, and current public status. Every card links to the company profile and to the company's full directory of publicly reported investors.
Kalshi
Regulated prediction market platform for event betting
Magic
24/7 virtual assistant
Front
Front is an API service provider
Gecko Robotics
Robotic inspection systems for industrial infrastructure
Sendbird
Enterprise-grade AI for reliable, delightful customer service.
Pyka
Portfolio company
UpCodes
Helping the construction industry cut through red-tape
Reach
Long-range wireless power transfer
Sully.ai
Creating superhuman doctors
Odys Aviation
Hybrid electric regional VTOL aircraft
Ryse Market
Turn rental income into instant revenue. Earn 2% commission on every rent advance.
Reality Defender
Detect Synthetic Media With AI
Maverick Biometals
We are automating directed evolution to create cost effective industrial enzymes
Warp
Payroll and compliance for startups
Piris Labs
Piris Labs builds optical interconnects for fast, cost-effective AI inference.
CellType
Simulates drug response in human biology using LLMs.
Kabcash
BNPL for Mexico
Nox Metals
Portfolio company
Spline
A friendly web-based collaborative 3d design tool
Origami Robotics
Builds high-DOF robotic hands that replicate human dexterity.
Selfin
Personal finance platform for self-employed professionals
Array Labs
Providing quality 3D imagery on a global scale
Marr Labs
Portfolio company
Terranox AI
AI-powered uranium exploration company.
Travo AI (YC W26)
AI-powered real estate data platform for niche commercial assets.
Visibl Semi
An applied AI lab automating semiconductor development.
Fenrock AI (YC W26)
Builds AI agents to automate financial crime compliance for banks.
Minerva Intelligence
Instant, flawless AI accountant
Boost Robotics
Physical agents for digital infrastructure
Superunit
End-to-end accounting & inventory management for sellers of physical goods
MENTEN AI
AI and Quantum-Powered Protein Design
Buoyant Aero
Air cargo delivery
Trestle Biotherapeutics
Bioengineered therapies for Kidney Disease
AlphaFlow
Tech-enabled investment in real estate loan acquisition.
Apollo Atomics
Portfolio company
One Robot
Portfolio company
Posh Energy
Portfolio company
Replit, Inc.
Portfolio company
Rove Card
Business credit card with AI-powered expense management
Singularity
Provides infrastructure, models, and systems for artificial intelligence.
Voxel Energy
Portfolio company
No companies match these filters.
Categories
Counted across the 42 companies above; a company that carries more than one Category is counted in each. 3 companies carry no Category.
Sources
One reviewed public source per company. Each link opens this site’s source reference, which names the publisher and then links out, so no third-party page is republished here.
- Scale AI: Source: Scale
- Kalshi: Source: Kalshi News
- Magic: Source: PRLog / Magic
- Front: Source: Front
- Gecko Robotics: Source: Gecko Robotics
- Sendbird: Source: Sendbird
- Pyka: Source: Pyka
- UpCodes: Source: Building Ventures
- Reach: Source: Reach Power
- Sully.ai: Source: Phaze Ventures
- Odys Aviation: Source: PR Newswire (Odys Aviation)
- Ryse Market: Source: Y Combinator
- Reality Defender: Source: PR Newswire / Reality Defender
- Maverick Biometals: Source: Maverick Metals
- Warp: Source: Warp
- Piris Labs: Source: Piris Labs
- CellType: Source: PR Newswire / Senhwa Biosciences
- Kabcash: Source: Shan Zhong (Kabcash co-founder/CEO), LinkedIn
- Nox Metals: Source: NOX METALS
- Spline: Source: TechCrunch
- Origami Robotics: Source: Script Capital
- Selfin: Source: Selfin
- Array Labs: Source: PR Newswire (Array Labs, Inc.)
- Marr Labs: Source: Y Combinator
- Terranox AI: Source: Terranox AI
- Travo AI (YC W26): Source: Travo
- Visibl Semi: Source: Visibl Semiconductors
- Fenrock AI (YC W26): Source: LinkedIn — Charu Sharma
- Minerva Intelligence: Source: Y Combinator
- Boost Robotics: Source: Boost Robotics
- Superunit: Source: Y Combinator
- MENTEN AI: Source: Menten AI
- Buoyant Aero: Source: Buoyant Aero
- Trestle Biotherapeutics: Source: Trestle Biotherapeutics
- AlphaFlow: Source: PR Newswire (news provided by AlphaFlow)
- Apollo Atomics: Source: PR Newswire
- One Robot: Source: One Robot
- Posh Energy: Source: PR Newswire / Posh
- Replit, Inc.: Source: Replit
- Rove Card: Source: TechCrunch
- Singularity: Source: Singularity
- Voxel Energy: Source: Taro Fukuyama
Related publicly reported investors
Other investors on this site that are publicly reported in some of the same companies. The number is how many of the 42 companies above also list that investor.
Frequently asked questions
How many companies in Sahin Boydas' public portfolio is Y Combinator publicly reported in?
Y Combinator is a publicly reported investor in 42 companies that are also in Sahin Boydas' public portfolio, as of October 2026: Scale AI, Kalshi, Magic, Front and Gecko Robotics, and 37 more.
Which Categories do the companies with Y Combinator as a publicly reported investor belong to?
The 42 companies span 13 Categories: AI (18), Software (11), Robotics (6), Energy (5), Aerospace (4), Climate (4), Fintech (4), Hardware (4), Biotech (3), Health (2), Other (2), Semiconductors (2) and Space (1). Each Category links to every portfolio company in it.
What does this Y Combinator page not say?
It is not a cap table and not a complete list of Y Combinator's investments. It lists only companies in Sahin Boydas' public portfolio where a cited public source reports Y Combinator as an investor, and it carries no deal terms.