Fourier GR-3C vs Realbotix B-Series
Fourier Intelligence vs Realbotix — specs, price, and data-backed comparison.
QUICK TAKE
- Fourier GR-3C offers the more degrees of freedom (55 vs 17).
SPECIFICATIONS COMPARED
| Fourier GR-3C | Realbotix B-Series | |
|---|---|---|
| Company | Fourier Intelligence | Realbotix |
| Category | Humanoid | Humanoid |
| Price: | Not announced | Not announced |
| Released: | — | 2025 |
| Weight | 71 kg | — |
| Reach | 1.4 m | — |
| Degrees of Freedom | 55 | 17 |
| Speed | 6 km/h | — |
| Battery Life | 180 min | — |
| Charging Time | ~1.5 h | — |
| Connectivity | Ethernet; Type-C, USB 3.0, RJ45 | — |
| Software / AI | Ubuntu 22.04; whole-body teleoperation; LLM-based voice interaction | — |
FREQUENTLY ASKED QUESTIONS
What is the difference between the Fourier GR-3C and the Realbotix B-Series?
Fourier GR-3C is made by Fourier Intelligence, while Realbotix B-Series is made by Realbotix. Both are humanoids, so the differences come down to price and specifications.


