Fourier
Category: Robotics / Embodied AI
Shanghai-based robotics company that grew from rehabilitation robots and exoskeletons into general-purpose humanoid robots (GR-1/2/3), and is reported to have co-built Meta's 'Max' humanoid prototype. Fourier was founded in 2015. The company is led by Alex Gu (顾捷). Based in Shanghai, China. Total funding raised: $190M. Latest round: Series E. Key investors include IDG Capital, Zhangjiang Venture Capital (张江科投), SoftBank Vision Fund 2, Prosperity7 Ventures (Saudi Aramco), Yuanjing Capital (元璟资本), Qianhai FOF (前海母基金), Guoxin Investment (国鑫投资), Pudong Venture Capital (浦东创投), Junshan Capital (钧山资本), Runyang Technology (润阳科技).
- Founded
- 2015
- Headquarters
- Shanghai, China
- Total funding
- $190M
Value proposition
Human-centric embodied AI: full-stack robot hardware and actuators paired with proactive human-robot interaction, aimed first at rehabilitation and care settings.
Products and solutions
GR-1, GR-2 and GR-3 humanoid series (GR-3 launched Aug 2025, 165 cm, 55 DoF, multimodal sensing), rehabilitation robots and exoskeletons (Fourier M2, X1, MetaMotus Galileo), FSA actuator platform, Fourier Nexus open robot ecosystem (hardware, open algorithms, shared data).
Unique value
A decade of rehabilitation-robotics experience in clinical settings, carried into soft, approachable care humanoids and interaction-first design.
Target customer
Hospitals, rehabilitation clinics, care facilities, universities, research labs and AI companies, plus enterprise partners such as Meta for custom humanoid development.
Industries served
Healthcare / rehabilitation, elderly and home care, research and education, general-purpose robotics
Technology advantage
Vertically integrated actuators and hardware, a large rehab installed base (over 10,000 units shipped as of Q1 2025 per Fourier), and a data and ecosystem platform (Fourier Nexus).
How they differentiate
Focus on care and rehabilitation use cases with a soft, touchable 'cat-head' GR-3 design and proactive interaction, rather than pure industrial or low-price volume plays.
Main competitors
Unitree Robotics, UBTECH Robotics, AgiBot
Key partnerships
Meta (co-developed 'Max' humanoid prototype, reported by The Information, Meta says internal research only), Nvidia (Jetson Thor compute in Max), National Instruments (EXOPS platform, 2019), Prosperity7 / Saudi Aramco-linked investors, Humain (Saudi, per third-party profile, not verified).
Notable customers
Hospitals and clinics in China and over 10 other countries, Zhuhai RHK Healthcare (acquired 2020), universities and AI companies as GR-1 research buyers, Meta (collaboration).
Major milestones
2015 founded, 2017 Fourier X1 exoskeleton, 2019 started humanoid R&D, 2020 acquired Zhuhai RHK, 2022 GR-1 walked, 2023 GR-1 unveiled at WAIC, 2024 GR-2, Jan 2025 Series E (~¥800M), Aug 2025 GR-3 launched, Jan 2026 GR-3 US debut at CES, 2026 Meta 'Max' prototype built in about 3 months, Max 2 started in Sep 2026.
Growth metrics
Over 10,000 units shipped cumulatively by Q1 2025 (including rehab devices); pre-money valuation reported at ¥8B in a May 2025 deal; 11-12 funding rounds in total per business registry.
Market positioning
Mid-sized Chinese humanoid maker that pivoted from medical rehab robotics to embodied-AI humanoids, with a care-sector focus.
Geographic focus
China, with expansion to the US (CES 2026 debut), Europe, Japan and the Middle East
Patents and IP
Holds design registrations (cited in a WIPO Hague System publication); detailed patent counts not verified.
About Alex Gu (顾捷)
Ex-National Instruments, sales executive; Shanghai Jiao Tong University graduate. Founded Fourier in 2015.
Latest news about Fourier
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Official website: https://www.fftai.cn