OS3
YC S26San Francisco, US · Founded 2025 · 2 employees · Hiring · 1 known investors
OS3 develops hardware robots and AI models for autonomous deployment in real-world environments. The company designs its own robot hardware and trains models using human demonstration videos and reinforcement learning.
Also known as Observee
Advanced ManufacturingAI & Machine LearningHardwareRoboticsB2BAIUnited States of AmericaAmerica / Canada
Founders & leadership· Y Combinator alumni (S26)
OS3 was founded in 2025 by Rishabh Chanana and Chris Hailey.
RC
Rishabh Chananain𝕏Co-FounderRishabh Chanana holds a graduate degree in Robotics and AI from UCSD, where he conducted NLP research with the CSG Lab in collaboration with Harvard Medical School and Georgia Tech. He previously trained large language models at ServiceNow and has designed machine learning systems; he now leads robotics development at OS3.
CH
Chris Haileyin𝕏Co-FounderChris Hailey is a co-founder at OS3 who previously worked as a software engineer at Coinbase on the asset addition team. He holds an undergraduate degree in computer science from USC.
Investors · 1
Competitors · 1
by search overlapCompanies competing with OS3 for the same Google search keywords, organic and paid, via search-intersection analysis.
Frequently asked questions
- What does OS3 do?
- OS3 develops hardware robots and AI models for autonomous deployment in real-world environments. The company designs its own robot hardware and trains models using human demonstration videos and reinforcement learning.
- Who founded OS3?
- OS3 was founded by Rishabh Chanana, Chris Hailey in 2025.
- Who are OS3's investors?
- OS3's investors include Y Combinator.
- Where is OS3 headquartered?
- OS3 is headquartered in San Francisco, US.

