OS3 YC Application
San Francisco
OS3 went through Y Combinator in the Summer 2026 batch as a Industrials company. Below: what the company does, who founded it, and its application to YC, reconstructed question by question in the real YC form.
- YC batch
- Summer 2026
- Industry
- IndustrialsManufacturing and Robotics
- Location
- San Francisco
- Team size
- 2
- Status
- Active
- Launched
- 2025
Founders
Rishabh ChananaFounder
Chris HaileyFounder
What OS3 does
OS3 deploys US-built mobile semi humanoid robots for repetitive physical work. We designed the robot, custom actuators, model and control stack as one system, then pretrained the model exclusively on 150,000 hours of video data spanning more than 2,000 tasks. Hospitality is our first deployment vertical. Through our Startup Partner program, teams are deploying OS3 robots in biotech, hospitals and data centers. Our two-person team built 3 robots and trained its first model in four months. We are making American robotics accessible to more businesses.
OS3's YC application, reconstructed
Y Combinator application
OS3, Summer 2026 batch. The real form questions, answered from public data.
- Founders2
- Company7
- Progress7
- Idea4
- Equity3
- Curious2
- Batch Preference1
Company
OS3
US-built humanoid robots for repetitive physical work.
We make US-built semi-humanoid robots that handle repetitive and physical tasks for businesses. We design and build the robots - including the actuators - ourselves, and train large video action models for controlling them. Our first deployments are in hospitality, and we're also working with early partners in biotech, hospitals, and data centers. The system comes as a package: the physical robot and the trained model, integrated from the ground up.
We live in San Francisco, CA and will keep the company based here after YC.
San Francisco is where we work, build hardware, and meet our B2B partners. It's also where our first deployment verticals and users are.
21 more answers in the full application
Founders, Progress, Idea, Equity, Curious, Batch Preference are in the full version. Create a free account to open it in YC Insights, next to every other YC batch.
Frequently Asked Questions
Is this the real OS3 YC application?
No. Y Combinator keeps submitted applications private. This is a reconstruction: the real YC form questions, answered from OS3's public data (launch notes, founder backgrounds, product description). It shows how a company like OS3 would present itself to YC, not the text they submitted.
What YC batch was OS3 in?
OS3 was part of the Y Combinator Summer 2026 batch.
Who founded OS3?
OS3 was founded by Rishabh Chanana, Chris Hailey.
What does OS3 do?
Deploying US-Built Humanoid Robots & Training Video Action Models
How do I read the full reconstructed application?
Create a free Round Funded account. The full 26-answer version of OS3's application, and every other YC batch, is in YC Insights.
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