Skip to content
WE BUILDHUMANOIDS
photograph pending · front
Image: not yet available1 / 1
Status: PILOT

Fourier GR-3

FourierHumanoid robotAnnounced

Fourier GR-3 is the company's third-generation humanoid robot, described by Fourier as its first full-size 'Care-bot' designed for wellness companionship and emotional connection, with a Multimodal/Full-Sense Interaction System combining vision, audio and tactile feedback. It stands 165 cm tall and weighs about 71 kg, with 55 degrees of freedom and a single-arm payload of about 3 kg; an optional 12-DOF dexterous hand is available in place of the base 6-DOF hand. It runs on a lithium-ion battery pair (702 Wh + 234 Wh) for about 3 hours per charge (about 1.5 hours to recharge), carries an AMD Ryzen 7 8845HS 8-core/16-thread compute module running Ubuntu 22.04, and supports Ethernet and Wi-Fi 6 connectivity. A variant, GR-3C ('Cosmo'), adds a LiDAR module for navigation in complex environments. Fourier's GR3 SDK (built on the Fourier Aurora SDK and FourierDDS middleware) exposes motion control, sensor, actuator, end-effector, navigation, manipulation, power and media modules, and the documentation describes a full exoskeleton teleoperation and data-acquisition workflow specific to the GR3 series.

EDITORIALOverview reviewed against the cited sources by WBH, .

HEIGHT
165 cm
WEIGHT
≈71 kg
DOF
55
RUNTIME
≈3 h
Suggest an edit

Last verified18 sources

DATA · 23 FIELDS

Specifications

  • Official source
  • Community measured
  • Not published
PHYSICAL
Height165 cmStanding height; consistent across the product page and the v3.0.2 docsOfficial source [1][7]
Weight≈71 kgConsistent across the product page and the v3.0.2 docsOfficial source [1][7]
Degrees of freedom55Base configuration (6-DOF hands); total actuator count is 'up to 55' with the optional 12-DOF dexterous hand fitted, per the docs, though the docs do not state a combined total for that configurationOfficial source [1][6][7]
LocomotionBipedalStated for the GRx series, of which GR-3 is a memberOfficial source [2]
Walking speed6.1 km/hTaken from the detailed v3.0.2 spec table; the product marketing page states 5.5 km/h instead (see discrepancies)Official source [7]
Ingress protectionNot publishedNot published
JOINTS & ACTUATION
Max joint torque440 N·mMaximum joint peak torque; specific joint not namedOfficial source [7]
Head DOF2Official source [1][7]
Waist DOF3Official source [1][7]
Arm DOF (per arm)7Single armOfficial source [1][7]
Leg DOF (per leg)6Single legOfficial source [1][7]
POWER
BatteryLi-ion, 702 Wh + 234 Wh, hot-swappableOfficial source [7]
Runtime≈3 hConsistent across the product page and docsOfficial source [1][7]
Charging time≈1.5 hSingle charge timeOfficial source [7]
COMPUTE & SENSING
ComputeAMD Ryzen 7 8845HS, Ubuntu 22.04Official source [7]
Perception sensorsMonocular/OAK camera, 6-axis IMU, mic array, 31 tactile sensorsDiscrepancy between docs ('Monocular camera') and product page ('stereo depth camera module') — see discrepanciesOfficial source [1][7]
ConnectivityEthernet, Wi-Fi 6Official source [7]
HANDS & PAYLOAD
End effector6-DOF base hand, optional 12-DOF handOfficial source [1][7]
Single-arm payload≈3 kgConsistent across the product page and docsOfficial source [1][7]
Hand DOF (base)6 (base); optional 12-DOF hand availableOfficial source [7]
AVAILABILITY & PRICE
Indicative priceNot publishedNot published
AvailabilityDeveloper/pilot units confirmed; no public order page foundOfficial source [12]
WarrantyNot publishedNot published

DATA · SOFTWARE & SIMULATION

Development

INTERFACESUPPORTPACKAGE / VERSIONSRC
SDKOfficialFourier Aurora SDK: C++17 and Python client library over FourierDDS. GitHub release fourier_aurora_sdk (Aurora SDK 1.0.1); the Debian package explicitly ships 'GR3 examples'. Docs quick-start installs the Python wheel via 'pip install fourier-aurora-client==0.2.1' (a version behind the 1.0.1 GitHub release — see discrepancies). SDK modules: GR-Controller, GR-Sensor, GR-Actuator, GR-EndEffector, GR-Navigation, GR-Manipulation, GR-Power, GR-Media, GR-MotionBank, FourierDDS.[8][12][15]
ROS 2Not publishedNo official ROS 2 package or statement for GR-3 found. Fourier's GR-3 middleware is FourierDDS (a DDS-based layer), distinct from ROS 2. A ROS 1 (noetic) install step appears only in the GR1-specific Wiki-GRx-Gazebo repository, not for GR-3.
Isaac Sim / LabNot publishedListed as a GR-3 capability (Isaac Sim and MuJoCo simulation) in Fourier's capability map, but no GR-3 simulation model or documentation is published yet: the linked page is under construction.[9][10]
MuJoCoNot publishedListed in the capability map alongside Isaac Sim; no GR-3 MJCF model is published. Fourier's public Wiki-GRx-Mujoco repository covers GR-1 only.[9][17]
GazeboNot publishedNo GR-3 Gazebo support found. The public Wiki-GRx-Gazebo repository covers only GR1T1/GR1T2 (GR-1) with ROS 1 (noetic).
URDF / MJCFOfficialWiki-GRx-Models (official FFTAI GitHub repository) lists GR3 URDF models: gr3v2_1_1 (basic and with dummy hand), alongside separate GR1 and GR2 model sets.[16]
LanguagesOfficialC++17 and Python (fourier_aurora_sdk README); Python quick-start examples in the GR-3 docs.[15]
TeleoperationOfficialFull exoskeleton-based teleoperation and data-acquisition (DAQ) workflow documented specifically for the GR3 series: full-body wireless control, motion/posture/camera/depth data capture with local storage, no cloud dependency.[11]