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Closed hardware

Fourier GR-2

Fourier (Fourier Intelligence) · Humanoid · active · 2024

Second-generation Fourier humanoid (Sept 2024) with 53 DOF including 12-DOF hands and a detachable battery.

L1CompiledGate: Package validates against the spec; every fact has a source.

Two ways to get Fourier GR-2

Compare all →
  1. 1Buy assembledPrice on requestFrom fftai.com
  2. 2Build Dropbear instead$9,948 BOMNearest open robot · 180 cm · 45 kg
Fig 1/4RenderFourier GR-2 studio render, three-quarter front view
Studio render of the published URDF, the model's zero pose. Geometry only; colours are the model's own materials.© Rendered by Hyperspawn from FFTAI/Wiki-GRx-Models (GPL-3.0) · Hyperspawn render · source
Drawing
/fourier/gr2
Maker
Fourier (Fourier Intelligence)
Country
Shanghai, CN
Package rev
none
Level
L1 Compiled
Availability
Buy
Openness
30/100
HW licence
Proprietary
Last checked
2026-09-24
Height
175 cm
Mass
63 kg
DOF
53
Actuators
Fourier FSA 2.0 actuators (>380 N·m peak)

Payload is 3 kg per arm. Fourier has since launched GR-3. Licenses: fourier-grx-GR2 MIT, Wiki-GRx-Models GPL-3.0, fourier_aurora_sdk Apache-2.0; fourier_lab has no license file.

Build · not possible

Build it. Buy it, or build something like it.

Closed hardware. Buy link only.

Availability
Buy
Indicative price
unknown
Maker site: fftai.com →Its sim model is open: train it →

Open robots of similar size you can build

Nearest by height and mass where both are known; otherwise same class. Size comparison only, not capability.

GATE

Level gate

Holds L1 · evidence, not confidence
  1. L0
    Indexed

    Known to exist. Atlas page only.

    • 2 sources on record(met)
    held
  2. L1
    Compiled

    Package validates against the spec; every fact has a source.

    • No build package compiled(not met)
    • 2 sources across robot and package(met)
    held
  3. L2
    Sim-verified

    Loads in browser and GPU sim, mass within tolerance of the BOM, holds a stand. Unlocks .training.

    • URDF/MJCF is public(met)
    • Sim load, mass tolerance and stand are checked on .training(checked elsewhere)
    next
  4. L3
    Sourced

    Every BOM line resolves to a live offer in at least two regions. Unlocks the one-click cart.

    • Not reachable: no open hardware to source or build.
    locked
  5. L4
    Built

    At least one community build report with photos and bring-up logs. Unlocks Build it as the main action.

    • Not reachable: no open hardware to source or build.
    locked
  6. L5
    Certified

    The robot's maintainer signs the package. Unlocks certified teams and kit sales.

    • Not reachable: no open hardware to source or build.
    locked

Levels are cumulative and set by the registry from reviewed evidence. This panel shows what can be measured from the package today.

Same robot, other verbs

REV

Revisions and sources

Every fact on this sheet traces to one of these
RevDescriptionChecked
PKGNo build package compiled—
S1Wikipedia: Fourier (company)en.wikipedia.org2026-09-24
S2The Robot Report GR-2 launchtherobotreport.com2026-09-24