In early 2025, Fourier Intelligence launched the N1, described as China’s first verified open-source humanoid robot. The N1 release covers both hardware designs (CAD files, BOM, assembly instructions) and software (motion controller, simulation models, API). The license allows academic, research, and commercial derivative use. This is not a token open-source release with documentation held back, it is a complete engineering package intended to let users build and modify the robot themselves. Understanding why Fourier made this decision, what the N1 is capable of, and what it means for the Chinese robotics sector requires looking at open-source hardware strategy in the context of a commercial robotics company.
What Open-Source Means for a Robot
Open-source software is familiar: release the code, let anyone modify and redistribute, build a community that improves the software and creates applications. Open-source hardware for robots is less common and more complex. Hardware has manufacturing costs, you cannot just download a robot. Open-source hardware means: the design files are available so users can manufacture their own, modify the design for their application, or build derivative products without license fees. For research institutions, this removes the procurement barrier, a university lab can build N1 units from Fourier’s designs rather than purchasing at commercial prices. For companies, it enables customization without reverse engineering. For the sector, it creates a common platform that tool developers, software developers, and researchers can target.
N1 Specifications
The N1 is smaller than Fourier’s commercial GR series, approximately 130 cm height, 40 kg weight. Degrees of freedom: 23 total, including 5-finger hands (not the 12-DOF hands of the GR-2/GR-3 commercial units). Walking speed: 0.8 m/s. Payload: 2 kg per hand. Compute: NVIDIA Jetson Orin NX module. Battery: 1 hour per charge. Sensors: stereo camera, IMU, joint torque sensing. The reduced scale and specification versus the commercial GR series is intentional: N1 is designed to be manufactured at lower cost (estimated CNY 50,000-80,000 in component costs for self-build), making it accessible to research groups that cannot afford the CNY 500,000+ price of a commercial GR unit.
Software Release
The N1 software release includes: ROS 2 integration package, MuJoCo simulation model (pre-tuned for realistic physics), whole-body controller (balance and locomotion), teleoperation interface, and example task policies for pick-and-place and door-opening. The MuJoCo simulation model is particularly valuable: researchers can develop and test new algorithms in simulation before deploying to hardware, using the same physics model that Fourier used for N1 development. This dramatically reduces the hardware-in-the-loop iteration cycles that make robot AI development slow and expensive.
Strategic Rationale
Why would a commercial robot company give away its hardware designs? The strategic logic is similar to Red Hat’s open-source business model: the software (Linux) is free, the support, certification, and enterprise services are paid. Fourier’s analogue: the N1 designs are free, the commercial GR units (with better specs, quality manufacturing, and support contracts) are paid. Researchers who build their AI on the N1 platform develop software compatible with Fourier’s architecture. When they need higher performance for commercial deployment, the GR-2 or GR-3 are the natural upgrade path, already familiar hardware and software. Open-source N1 is a customer development investment, not charity.
Ecosystem Impact
By June 2026, the N1 open-source release had attracted adoption from over 30 Chinese university research groups and several international teams. Fourier reports 500+ registered N1 build teams across 20+ countries. Application areas: rehabilitation robotics research (directly aligned with Fourier’s commercial focus), manipulation AI development, bipedal locomotion research, and human-robot interaction studies. The N1 community has contributed improvements to the simulation model, additional task policies, and a Mandarin language interface, examples of community-driven development that Fourier would have needed to fund internally without the open-source strategy.
GR-3 commercial context: Fourier GR-3 emotional AI. Full ranking: Top 40 China Robot Rankings 2025.
Sources
- Fourier Intelligence: N1 open-source humanoid launch (early 2025)
- GitHub: Fourier N1 repository (software and hardware design files)
- The Robot Report: Fourier N1 open-source humanoid overview
- Fourier: Ecosystem adoption statistics (June 2026)
