Fourier N1
Open-source developer/research platform (announced Apr 11, 2025)
What is the Fourier N1?
Fourier N1 is Fourier Intelligence's bipedal legged humanoid robot, aimed at open-source humanoid r&d: whole-body motion control, locomotion controllers, embodied-ai model integration, academic/community use. As of 2026-06-24 it is a research / limited-access platform, not openly sold.
On the US market the price works out to a quote-only figure (no public price yet). No official USD price; range from self-assembly kits to complete platforms, no figures.
Where to buy the Fourier N1 (and what it costs)
Price on inquiry
No official USD price; range from self-assembly kits to complete platforms, no figures.
Contact Fourier; open-source assets free on GitHub; no public order page for N1
Leasing / RaaS: unknown
Fourier N1 full specs
Each value is labeled official vs third-party. Unknown fields are omitted rather than guessed.
| Mobility | Bipedal legged |
|---|---|
| Height | 1.3 m |
| Weight | 38 kg |
| Degrees of freedom | 23 |
| Speed | Up to 3.5 m/s |
| Battery / runtime | Over 2 h (swappable) |
| Hands / manipulation | unknown (locomotion-focused platform) |
| Sensors | unknown (not detailed) |
| Developer access (API/SDK) | Open-source: fourier-grx-N1 SDK + docs on GitHub (FFTAI, MIT); full BOM/design/software released |
| Operating environment | Indoor + outdoor (complex terrain tested); developer/research |
Claims vs evidence
Self-developed control w/ FSA 2.0 actuators; complex-terrain mobility + fall recovery (third-party); 1,000+ h outdoor testing; no high-level task autonomy verified
Where it's working
unknown (research/developer platform)
Intended use cases: Open-source humanoid R&D: whole-body motion control, locomotion controllers, embodied-AI model integration, academic/community use
Should you consider it?
Fourier N1 is not yet something you can buy; it's best watched as the market and the technology mature. Specs are a mix of official and third-party figures, so confidence is moderate. (70/100, verified 2026-06-24.)
Assessment is based on stated criteria (availability, data confidence, US relevance) — not hands-on testing or user ratings. See our editorial policy.
How we know this
Spec source quality: mixed · confidence 70/100 · last verified 2026-06-24.
- humanoidsdaily.com (fourier-n1 open-source)
- github.com/FFTAI
- fourier-grx-n1.github.io
Similar robots
Fourier GR-1 / GR-2
Figure 03
Tesla Optimus
