Fourier (formerly Fourier Intelligence) is a Shanghai-based robotics company founded in 2015 that grew from medical exoskeletons and rehab robotics into a broader “full-stack” portfolio that now includes humanoid robots, rehabilitation systems, and biomechanics platforms. Fourier says its products serve 2,000+ institutions across 40+ countries/regions, reflecting a strong footprint in clinical and research deployments.

On the humanoid side, Fourier’s GRx lineup is built “Made for AI” and is positioned as an accessible developer and deployment platform.
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GR-1 is described by Fourier as its first mass-produced humanoid robot, a human-sized biped with 44 joints aimed at practical applications and broad motion libraries.

GR-2 is the next step: 175 cm, 53 joints, ~2 hours battery life, and 12-DoF dexterous hands with tactile sensing, plus a stronger developer toolkit intended to bridge simulation to real tasks.

Fourier also runs a large rehab business under Fourier Rehab. Its RehabHub™ is an AI-driven “hub” that unifies many specialised therapy robots in a digital training environment, and its product portfolio spans upper-limb, ankle/wrist, cycling and OT systems (e.g., ArmMotus, AnkleMotus, WristMotus, OTParvos, EXOPS).

The company’s MetaMotus™ Galileo platform adds mixed-reality training scenarios for biomechanics analysis and rehabilitation.

Looking ahead, Fourier’s “future robots” center on the GR-3 Series (positioned as a more companion-oriented “care-bot” line with hot-swappable batteries and whole-body teleoperation) and its stated open-source direction (e.g., N1 and related datasets/tooling).

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