Fourier Robotics

Humanoid platforms (GR-series)

The flagship GR-1 is a human-size biped standing roughly 165 cm tall and weighing about 55 kg. Fourier highlights a bionic body, predefined motion library (twisting, squatting, gripping), and a human-robot interaction layer that can be paired with language models for natural commands and task automation.

Fourier has iterated rapidly: a GR-2 upgrade (unveiled in late 2024) reportedly increased height, degrees of freedom, and swappability of the battery; in August 2025 the firm introduced GR-3, a “care-centric” humanoid emphasizing emotional interaction in human environments

Rehabilitation systems

Before humanoids, Fourier built out RehabHub™—a networked suite of therapy devices and exoskeletons intended to standardize neuro-rehabilitation workflows across hospitals and community clinics. Company literature documents large deployment footprints and “hundreds of millions” of therapy interactions, positioning rehab robotics as the group’s original core business.

Technology and Specifications

Humanoid hardware & control

Fourier’s GR-series combines electric actuation, multi-sensor perception, and whole-body control for bipedal locomotion and manipulation. Public product pages list GR-1 at 165 cm / 55 kg with a focus on stable walking and routine workplace motions; the official GR-1 brief cites peak joint torques and a motion stack tuned for human-like tasks. (Exact values vary by revision and are detailed in the company’s spec PDF.)

Third-party trackers and coverage note vision-based navigation (multiple RGB cameras, mapping/avoidance) and a software pipeline that supports imitation learning and sim-to-real transfer. A 2023 production launch article summarized early GR-1 figures as 1.65 m height and ~40 DoF (later builds report higher counts for GR-2)

Representative specs (publicly reported)

GR-1 (production intro): ~1.65 m, ~55 kg, ~40 DoF (rev-dependent), designed for general-purpose research and pilot tasks.

GR-1 (site listing): 165 cm height, 55 kg mass; bionic body with predefined motions and HRI features.

GR-2 (2024): press summaries describe ~1.75 m, ~63 kg, ~53 DoF, detachable battery, and improved manipulation—positioned as a step-up from GR-1.

GR-3 (2025): “Care-bot” variant emphasizing human-centric interaction and affective design for daily living support.

RehabHub™ platform

Fourier’s RehabHub™ integrates robotic therapy devices, data collection, and clinical dashboards to improve consistency in neuro-rehabilitation (stroke, spinal cord injury, etc.). Earlier technical brochures reference deployments across many countries and high session counts, reflecting the company’s clinical roots that inform its human-robot interaction design.

 Applications and Use Cases

R&D and developer ecosystems

The company has supplied GR-1 units to universities and AI labs for research in locomotion, manipulation, HRI, and embodied AI. Fourier’s “accessible” positioning targets developer platforms rather than immediate heavy industrial deployment, aligning with a market trend where humanoids enter sites through pilots and academic partnerships.

Healthcare and assistive scenarios

Fourier’s GR-3 announcement frames humanoids for care and assisted living—companionship, light fetching, and safe interaction—while the RehabHub™ family continues to support clinical rehabilitation programs in hospitals and outpatient centers.

Light industrial & service pilots

Industry roundups cite GR-1 targeting warehouse or retail helper tasks at modest payloads, telepresence, and routine circulation duties, with economics and reliability evolving as production scales.

Advantages / Benefits

• Dual heritage: Clinical rehabilitation pedigree (exoskeletons, therapy devices) plus humanoid mobility experience yields practical HRI insights and safety-first workflows.
• Accessible form factor: GR-1’s human-scale dimensions and weight optimize for research labs and pilot deployments, not just exhibition demos.
• Rapid iteration: GR-1 → GR-2 → GR-3 within two years underscores a fast hardware/software cadence and growing motion library.
• Ecosystem traction: The company lists collaborations with top universities and claims thousands of institutional customers on the rehab side, aiding distribution and support.
• Materials & manufacturing partnerships: Announced collaborations (e.g., BASF MoU on materials for next-gen humanoids) hint at a maturing supply chain and component optimization.

Comparisons

In the humanoid landscape, Fourier’s GR-series sits alongside platforms from Unitree, UBTECH, Figure, Apptronik, and Agility Robotics. Compared with logistics-specialized humanoids that emphasize enterprise pilots and high-duty cycles, Fourier stresses accessibility for developers, human-centric care, and academic/research distribution while drawing on a rehab-robotics background. This contrasts with firms that originated in industrial arms or legged research and are now retrofitting for healthcare.

Pricing and Availability

Fourier does not publish uniform retail pricing globally; third-party market trackers and reseller pages have quoted indicative GR-1 ranges in the low- to mid-six figures USD depending on configuration and volume. Some sources have cited $125k–$170k projections as production scales, while others list “contact us” pricing for GR-2/GR-3. Prospective buyers typically engage through direct inquiry for quotes, SDK access, and training

FAQ

What is Fourier?
Fourier is a Shanghai-based robotics firm (founded 2015) known for rehabilitation robots and the GR-series of humanoid robots. It was previously branded Fourier Intelligence

How do Fourier’s humanoids work?
GR-series robots use electric actuation, multi-sensor perception, and whole-body control to walk and manipulate objects. Product literature emphasizes predefined motions, vision navigation, and optional large-language-model interfaces for intuitive commands.

Why is Fourier important?
It bridges clinical rehabilitation robotics and general-purpose humanoids, offering human-centric designs and an expanding developer ecosystem while pursuing scale manufacturing.

What are headline specs for GR-1?
Public pages list ~165 cm height, ~55 kg weight, and a bionic motion library; earlier production articles summarized ~40 DoF (revisions vary). Consult the latest datasheet for current DoF, payload, and battery options.

Summary

Fourier has evolved from a leading rehabilitation-robotics provider into a prominent developer of human-scale humanoids. The GR-series demonstrates a fast iteration cycle—from GR-1 to GR-2 and the care-focused GR-3—while RehabHub™ anchors the company’s clinical base. With accessible developer messaging, growing partnerships, and movement toward scaled production, Fourier occupies a distinctive position at the intersection of healthcare robotics and embodied AI for everyday environments.