Fourier

Rehab-robotics veteran turned humanoid maker; GR-3 care humanoid, preparing Hong Kong IPO

Scaleup · Shipping · Humanoid OEM · Shanghai, China · Founded 2015 · fftai.com

Profile

Shanghai-based Fourier started in rehabilitation robotics in 2015 and was one of China's first humanoid makers with the GR-1. Its GR-3 targets care settings. It began a Hong Kong IPO process in 2026 with CITIC, CICC and Morgan Stanley reportedly engaged.

Notes Series E USD conversion approximate.

People

• GJ
  Gu Jie

  Chief Executive Officer

As of Oct 13, 2026. X handles are shown only when we could confirm they belong to the person.

Flagship robots

• GR-3 Humanoid
  Care-focused humanoid shown at CES 2026
• GR-1 / GR-2 Humanoid
  Earlier general-purpose humanoids sold to research labs

Funding and valuation

Trademarks

2 names filed in the US since 2025 · last checked Oct 15, 2026.

• FOURIER Registered
  Filed Apr 30, 2025 · Class 007, Class 009, Class 010 · USPTO record
  Robotic exoskeleton suits being machines, other than for medical purposes; industrial robots.
• Logo (no words) Allowed, extension granted
  Filed Apr 30, 2025 · Class 007, Class 009, Class 010 · 2 filings · USPTO record
  Household cleaning robots with artificial intelligence; robots for building construction.

Source: USPTO Trademark Search, matched on the company’s legal names. Rechecked on the 1st and 15th of each month. A filing shows intent to use a name in the US, not a launched product.

Competitors

Companies with overlapping products. Direct = same customers and same job; Adjacent = overlapping technology or market, different focus.

• Donut Robotics

  Direct competitor

  JPHumanoid startup

  Both sell humanoids for care settings: Donut Robotics deploys its cinnamon 1 biped in nursing homes, while Fourier makes the GR-3 care humanoid and has a rehabilitation-robot background.

  Sources (2)

  • Fourier (company website)
  • Donut Robotics (company website)

• AgiBot (Zhiyuan Robotics)

  Adjacent competitor

  CNHumanoid startup

  Both sell humanoids in China: AgiBot ships humanoids in volume and is the largest shipper by IDC count, while Fourier makes the GR-3 care humanoid and has a rehabilitation-robot background.

  Sources (2)

  • Fourier (company website)
  • AgiBot (Zhiyuan Robotics) (company website)

• UBTECH

  Adjacent competitor

  CNHumanoid OEM

  Both sell humanoids in China: UBTECH builds the Walker S2 factory humanoid with autonomous battery swapping, while Fourier makes the GR-3 care humanoid and has a rehabilitation-robot background.

  Sources (2)

  • Fourier (company website)
  • UBTECH (company website)

Recent news

• Aug 15, 2026 — Fourier begins Hong Kong IPO process RoboticsIntl
• Jan 6, 2026 — GR-3 care humanoid debuts at CES 2026 PR Newswire

Suppliers

• D-Robotics (Horizon Robotics) — RDK S600 (560 INT8 TOPS) / S100 robot compute

Sources

• Fourier makes CES debut with GR-3 care-focused humanoid (PR Newswire) (Jan 6, 2026)
• Fourier Intelligence files for Hong Kong IPO (RoboticsIntl) (Aug 15, 2026)
• From lab to home: why Fourier humanoids aren't ready for deployment yet (Robot24) (Jul 21, 2026)

Confidence: medium.

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