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OS3 (YC S26) — Affordable, intelligent humanoid robots built to deploy at scale

OS3 is building the platform that makes intelligent robots accessible to every business. Today, robotics is constrained by two fundamental bottlenecks: hardware is too expensive to deploy at scale, and robots are difficult to train because high-quality robotics data is scarce and costly to collect.

OS3 is a Y Combinator company in the Summer 2026 batch. Its directory entry describes it as: Affordable, intelligent humanoid robots built to deploy at scale. The founders listed are Rishabh Chanana (Founder), Chris Hailey (Founder) (Y Combinator directory entry, July 23, 2025).

6 more companies from YC Summer 2026 ↓

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OS3

New accelerator entry · 2025-07-23 · the record

Summer 2026
batch
2
people
Early
stage
United States of America
region
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What the record says

BatchSummer 2026
Announced2025-07-23
StageEarly
StatusActive
Team size2
IndustryIndustrials
Sub-industryIndustrials -> Manufacturing and Robotics
SectorsArtificial Intelligence, Hardware, Robotics, B2B
RegionsUnited States of America, America / Canada
BasedSan Francisco, CA, USA
HiringYes
Sitehttps://os3robotics.com/
Previously known asObservee

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In their words

OS3 is building the platform that makes intelligent robots accessible to every business. Today, robotics is constrained by two fundamental bottlenecks: hardware is too expensive to deploy at scale, and robots are difficult to train because high-quality robotics data is scarce and costly to collect. We built OS3 to solve both. Our two-person team designed and a US-made mobile humanoid robot for a fraction of the cost of commercial alternatives. On the intelligence side, instead of relying on expensive robot-generated training data, we trained our own video-action model on 150,000 hours of real-world video spanning more than 2,000 tasks. Every deployed robot feeds new experience into our reinforcement learning pipeline, self improving robot fleet over time. This creates a robot that can be deployed across industries to automate repetitive, physical work without requiring a new robot or training pipeline for every task. Our robots are already deployed in hotels, with customers now expanding the platform into biotech, hospitals, and data centers, including a wet lab at Stanford. Our mission is to do for robotics what Apple did for personal computing: take technology that was once expensive, specialized, and inaccessible and make it powerful and usable at massive scale. We’re building toward a world with billions of intelligent robots, and OS3 is the platform that makes that possible.

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OS3: Accepted into Y Combinator Summer 2026
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Permanent URL: https://mentionfox.com/funding/yc-os3
Last updated 2026-10-20
Primary record: Y Combinator directory entry
OS3 (YC S26) — Affordable, intelligent humanoid robots built to deploy at scale. MentionFox, 2026-10-20. https://mentionfox.com/funding/yc-os3