0DOF
Bimanual Arms
Introducing
OpenArm 2.0
Making SOTA reproducible.
OpenArm is a fully open-source humanoid robot arm designed for physical AI research and deployment in contact-rich environments. A unified environment for data collection and reproducible auto-evaluation — the open-source foundation to turn isolated experiments into shared progress.
0mm
Arm Reach
0.0kg
Weight per Arm
0.0 / 0.0kg
Nominal / Peak Payload per Arm
0kHz
CAN-FD Control
$0
Bill of Materials Cost
Fully Open-source
Complete CAD, firmware, control code, and simulation tools openly available.
Teleoperation
Smooth, human-like control with real-time gravity compensation.
Bilateral Force Feedback
Two-way force feedback for contact-rich teleoperation and real-world data collection.
Dexterous, Powerful & Safe Design
Compliant, backdrivable joints enable safe, practical human-centered interaction.
Buy as Kit or Pre-Built
Available as a DIY kit or fully assembled unit.
Evaluation Infrastructure
OpenArm Cell
A reproducible evaluation cell that standardizes background, lighting, cameras, and arm position for fair, automated AI model comparison. "Model A outperforms Model B" only holds meaning when evaluated under identical conditions — OpenArm Cell provides the reproducible infrastructure to make such claims verifiable.
Standardized Environment
Background, arm position, lighting, and camera placement are all standardized. Any Cell anywhere guarantees identical evaluation conditions.
Lift Mechanism
A lift system moves both arms vertically as a unit, greatly expanding the reachable workspace for tasks at varying heights.
Safety & Long-Term Operation
Light curtains, emergency stops, and upgraded power systems enable safe 24/7 continuous evaluation at scale.
Automated Evaluation
AI models can be automatically evaluated and compared without manual intervention, enabling fair and scalable benchmarking.
Preview · Not in This ReleaseTeaching Device
OpenArm KER
Kinematic Equivalent Replica
A lightweight, shoulder-mounted passive arm with the same kinematic structure as OpenArm — zero actuators, zero resistance. Purpose-built for long-session, high-quality teleoperation data collection.
Same Kinematics
Identical axis configuration, link ratios, and degrees of freedom. 1:1 motion mapping to OpenArm with human-like articulation.
Shoulder-Mounted
Lightweight, wearable design fits naturally on the operator's body for intuitive, high-freedom-of-movement operation.
Zero Fatigue
No actuators means no cogging torque or motor resistance. Operators can collect data for extended sessions without fatigue.
OpenArm KER is a forthcoming product and is not included in this release. Development is ongoing; the release timeline will be announced separately.
OpenArm
in Action
Join our Community
Open to all builders, researchers, and robotic enthusiasts. Directly reach our team for questions, feedback, and collaboration opportunities.
Let’s Get in Touch
We’d love to hear what you’re working on, answer any questions, or explore ways to collaborate.
We’re always excited to meet with engineers, researchers, and partners to shape the future of physical AI together.
Enactic
OpenArm is a project by Enactic, Inc.
We develop robots at our lab in Tokyo, Japan.
Join the Enactic team.