GR-2 Review: Fourier Humanoid Specs, Autonomy and Buyer Guide

By the FIRGELLI Robots Editorial Team. Last updated 2026-07-09.

Quick Answer

GR-2 is Fourier Intelligence's full-size bipedal humanoid platform. It should be reviewed as a humanoid research/service robot with published public specs, not as a generic database entry.

Fourier's current GR-2 URL is live at fourierintelligence.com/products/gr-2, while FIRGELLI's consolidated data lists 175 cm height, 63 kg weight, 53 DOF, 3 kg single-arm payload and about 2 hours runtime. Those values match the public GR-2 positioning but should still be verified for the final purchase configuration.

Our view is that GR-2 is a full-size bipedal humanoid research and service robot. The biggest practical limitation is current public buying terms and complete configuration details are limited.

Our Verdict

What Is GR-2?

GR-2 is a robotics platform from Fourier Intelligence. This article frames it by what public sources support today, not by a generic humanoid template.

Fourier's current GR-2 URL is live at fourierintelligence.com/products/gr-2, while FIRGELLI's consolidated data lists 175 cm height, 63 kg weight, 53 DOF, 3 kg single-arm payload and about 2 hours runtime. Those values match the public GR-2 positioning but should still be verified for the final purchase configuration.

Who Makes GR-2?

Fourier Intelligence is the manufacturer behind GR-2. For buyers, the important question is not only who built the robot, but whether the current public evidence supports the task, safety, autonomy and support claims being made for it.

What Type of Robot Is It?

GR-2 is best classified as a full-size bipedal humanoid research and service robot. It should not be left under the old generic or quadruped-style classification. That correction changes the review: the useful buying questions are about bipedal mobility, manipulation, uptime, safety, integration and autonomy.

Key Specifications

What Can GR-2 Actually Do?

GR-2 is a full-size humanoid platform with enough DOF and scale to matter for serious humanoid research. The reported 53 DOF suggests a robot built for whole-body movement and manipulation rather than simple mobile display use.

The 3 kg single-arm payload is modest compared with larger industrial humanoids, so GR-2 should be evaluated around service, research and lighter manipulation tasks rather than heavy warehouse lifting.

The practical test for GR-2 is not whether a single demo looks impressive. A buyer should ask which exact tasks have been repeated, what the success rate is, what the cycle time is, how failures are recovered and how much on-site engineering is required before the robot becomes useful.

Autonomy Review

Based on what has been shown publicly, we would place GR-2 around Level 2-3 from public evidence. It can be a platform for task autonomy and research, but public evidence does not support Level 5 general-purpose autonomy.

For a buyer, the useful question is what developer access, perception stack and task demos Fourier provides with the exact configuration.

That is why this review uses a conservative autonomy score for GR-2. The robot may be capable inside a defined workflow, but broad autonomy should be earned with repeatable evidence, not assumed from the word humanoid.

Privacy and Teleoperation

GR-2 is not primarily a home telepresence product, but any service deployment with cameras or remote support should define data handling, storage and operator access.

Hardware and Design

GR-2's public hardware profile is strong: 175 cm class height, 63 kg weight and 53 DOF. That makes it a more complete humanoid body than compact developer robots.

Mobility

GR-2 is a bipedal humanoid. Its mobility should be tested around walking reliability, turning, recovery and safe operation around people.

Hands, Arms and Manipulation

The reported 3 kg single-arm payload is enough for light objects but not heavy industrial material handling. Buyers should verify hand configuration, grip force and reach.

Battery Life and Power

Public data lists around 2 hours runtime. Buyers should confirm runtime for the exact battery, compute and task load.

Sensors, Vision and Perception

Detailed sensor package should be verified with Fourier. Humanoid service/research work typically depends on camera/depth perception and body state sensing.

Software, AI and Developer Ecosystem

The buyer should ask Fourier about SDK access, ROS support, simulation, task programming and integration with external AI systems.

Safety and Operating Environment

A full-size 63 kg biped requires lab or industrial safety rules, emergency stops, safe zones and human supervision during development work.

For GR-2, safety should be reviewed as part of the buying process, not after delivery. Ask for operating limits, emergency-stop behavior, collision handling, fall recovery, maintenance procedures, remote-support rules and documentation for the exact model being purchased or piloted.

Price and Availability

GR-2 pricing is not public in the reviewed sources. Expect direct inquiry and configuration-based quoting.

The total cost of GR-2 is not only hardware. Training, site preparation, spares, support, integration, charging, supervision and insurance can matter as much as the robot price, especially for early humanoid deployments.

Best Use Cases

• Humanoid research.
• Light service robotics.
• Whole-body manipulation development.
• Education and lab demos.
• Comparison against GR-1/GR-3 and other full-size humanoids.

Who Should Consider GR-2?

Consider GR-2 if you need a full-size humanoid research platform with many DOF and moderate payload needs.

Who Should Avoid GR-2?

Avoid GR-2 if you need heavy payload, public price, proven industrial uptime or consumer home readiness.

Strengths

• Live official GR-2 URL.
• Full-size humanoid body.
• Reported 53 DOF.
• 63 kg weight is manageable for lab work.
• Good fit for research and service tasks.

Limitations

• Public price not disclosed.
• Some height values vary across public data.
• Payload is modest.
• Runtime is limited.
• Final configuration must be verified directly.

How GR-2 Compares With Similar Robots

Compared with Unitree G1, GR-2 is larger and more full-size. Compared with Digit, GR-2 is less warehouse-specialized. Compared with Walker S, GR-2 has clearer current official URL access in this audit but still limited buyer terms.

The fairest way to compare GR-2 is against the task it is supposed to do. A humanoid can be exciting, but fixed automation, AMRs, cobots or a narrower robot may still be better when the job does not require a human-shaped body.

Full GR-2 Specs and Images

See the full FIRGELLI Robots profile here: GR-2 robot profile, images and specifications.

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FAQ

Sources and Review Methodology

FIRGELLI Robots prioritized official Fourier Intelligence sources where they were live, then used reputable robotics and technology coverage for deployment context. Public or conflicting spec values are labeled so readers do not mistake old backend data for final manufacturer specifications.