# Fourier GR-3 vs K2 Bumblebee in 2026

Comparing 2 humanoid robots across availability, pricing, capabilities, and verified deployments. Current as of 2026.

## Key differences

On DEPLOY's record, K2 Bumblebee is further along: at the pilot stage versus Fourier GR-3 at the research stage, as of 2026.

- K2 Bumblebee has more verified real-world deployments (1 vs 0).
- Fourier GR-3 is at the research stage; K2 Bumblebee at the pilot stage.

| Attribute | [Fourier GR-3](/consumer/models/fourier-gr-3) | [K2 Bumblebee](/consumer/models/kepler-k2) |
| --- | --- | --- |
| **Manufacturer** | [Fourier Intelligence](/companies/fourier-intelligence) | [Kepler Robotics](/companies/kepler) |
| **Form factor** | humanoid | humanoid |
| **Maturity** | research | pilot |
| **Availability** | announced | shipping |
| **Price** | Not announced | $34,000 (actual sale price) |
| **Capability claims** | 1: humanoid robot with NVIDIA Isaac GR00T AI brain (autonomous) | 1: Picks and packs (claimed-only) |
| **Brain** | — | — |
| **Verified deployments** | 0 | 1: [Kepler Robotics](/companies/kepler) |
| **Privacy practices** | — | — |
| **Sources on file** | 8 | 7 |

_Canonical: https://deploy.report/compare/fourier-gr-3-vs-kepler-k2_

## Common questions

### How do Fourier GR-3 and K2 Bumblebee differ?

On DEPLOY's record, K2 Bumblebee is further along: at the pilot stage versus Fourier GR-3 at the research stage, as of 2026. K2 Bumblebee has more verified real-world deployments (1 vs 0). Fourier GR-3 is at the research stage; K2 Bumblebee at the pilot stage.

### What is the difference between Fourier GR-3 and K2 Bumblebee?

Fourier GR-3 and K2 Bumblebee are both humanoid robots on the DEPLOY registry. They differ in maker, maturity, price, verified deployments, and how much of their autonomy is independently verified. See the table above for the full head-to-head; each figure is sourced.

### Is Fourier GR-3 or K2 Bumblebee more autonomous?

On the DEPLOY registry, neither Fourier GR-3 nor K2 Bumblebee has capabilities independently verified as fully autonomous yet; their recorded capabilities are teleoperated-assisted, demonstrated, or vendor-claimed. See the table for each capability's verification status.

### Which has more verified deployments, Fourier GR-3 or K2 Bumblebee?

K2 Bumblebee has more verified deployments (1) on the DEPLOY registry than Fourier GR-3 (0). DEPLOY counts a deployment only when confirmed at a named site with a primary source.


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