GR1 vs GR2: verify the generation and hand configuration
Fourier’s developer material exposes GR1 configuration differences, while GR2 has a distinct published hardware and software package.
Source review: 21 October 2026 · Manufacturer claims are not independent test results.
Compare published specificationsA qualified hardware comparison
Fourier’s GR2 technical brochure lists 1750 mm height, approximately 63 kg weight and up to 53 actuators with the optional 12-DOF dexterous-hand configuration. The articulation figure is configuration-dependent, not universal.
Fourier’s accessible GR1 developer material confirms configuration differences but did not re-establish a consistent model-specific height, mass or total joint count. Unverified scalar figures are omitted rather than treated as current.
Hands and development assets
Fourier’s own model repository distinguishes GR1, GR1L, GR1 Pro and GR1L Pro, and warns that different dexterous hands require the correct robot model. A GR1 label alone is insufficient to identify manipulation hardware.
Fourier’s GR2 brochure describes a second-generation hand with up to 12 degrees of freedom and toolkit support for NVIDIA Isaac Lab, ROS and MuJoCo. These published interfaces do not establish software portability from a particular GR1 installation.
Upgrade or new platform: ask for migration evidence
Fourier retains GR1-specific startup and development instructions, including model and firmware differences. Documentation availability is not confirmation of ongoing hardware sales or service commitments.
For an existing GR1 lab, request controller, hand, API and simulation migration details before considering GR2. For either platform, require a task demonstration and written service terms. This review does not establish that GR1 is discontinued or that GR2 is a drop-in replacement.
Sources and evidence
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