# Cyborg Index — August 2026 edition
> Answer summary
>
> As of the August 2026 edition, Cyborgs of Earth ranks 13 humanoid robot offerings by Capability score (0–5, evidence-graded). The highest-scoring offering is UBTech Walker S (UBTech) at 1.48, with 30 of 40 sub-axes evidenced.
> Scores read the public evidence record, not the machine. A sub-axis with no public evidence counts as 0.
Edition: August 2026 edition (published 2026-08-28)
Ranking authority: Rank is ordered by Capability score (desc). Proof score never re-ranks.
## Ranking
| Rank | Robot | Vendor | Capability score | Proof score | Coverage |
| --- | --- | --- | --- | --- | --- |
| 1 | UBTech Walker S | UBTech | 1.48 | 0.11 | 30/40 |
| 2 | Agibot A2 | Agibot (Zhiyuan Robotics) | 1.40 | 0.19 | 29/40 |
| 3 | 1X NEO | 1X | 1.27 | 0.09 | 28/40 |
| 4 | Figure 03 | Figure AI | 1.20 | 0.10 | 27/40 |
| 5 | Kepler Forerunner K3 | Kepler Robotics | 1.18 | 0.07 | 27/40 |
| 6 | Kepler Forerunner K2 | Kepler Robotics | 1.10 | 0.05 | 26/40 |
| 7 | NEURA 4NE-1 | NEURA Robotics | 1.00 | 0.08 | 23/40 |
| 8 | Apptronik Apollo | Apptronik | 0.97 | 0.08 | 21/40 |
| 9 | Boston Dynamics Atlas (electric) | Boston Dynamics | 0.75 | 0.12 | 15/40 |
| 10 | Tesla Optimus | Tesla | 0.72 | 0.16 | 20/40 |
| 11 | Unitree H2 | Unitree | 0.70 | 0.06 | 17/40 |
| 12 | Fourier GR-2 | Fourier Intelligence | 0.57 | 0.06 | 14/40 |
| 13 | XPeng IRON | XPeng | 0.47 | 0.02 | 11/40 |
## Capability score by axis (top 12)
| Robot | Locomotion | Manipulation | Perception | Autonomy | Learning | HRI | Deployment | Safety |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| UBTech Walker S | 1.6 | 1.6 | 1.6 | 1.8 | 0.4 | 2.0 | 2.0 | 0.8 |
| Agibot A2 | 1.2 | 1.2 | 0.8 | 1.6 | 1.2 | 2.0 | 1.6 | 1.6 |
| 1X NEO | 1.2 | 0.8 | 1.6 | 1.0 | 2.0 | 1.6 | 1.2 | 0.8 |
| Figure 03 | 0.8 | 1.0 | 1.4 | 1.2 | 1.4 | 1.6 | 1.2 | 1.0 |
| Kepler Forerunner K3 | 1.6 | 1.2 | 1.4 | 1.2 | 1.2 | 1.6 | 1.0 | 0.2 |
| Kepler Forerunner K2 | 1.6 | 1.2 | 1.4 | 1.0 | 0.8 | 1.6 | 1.0 | 0.2 |
| NEURA 4NE-1 | 0.8 | 1.2 | 1.0 | 1.2 | 1.2 | 1.6 | 0.4 | 0.6 |
| Apptronik Apollo | 0.8 | 1.2 | 0.6 | 1.6 | 0.8 | 1.2 | 1.0 | 0.6 |
| Boston Dynamics Atlas (electric) | 0.8 | 1.2 | 0.4 | 0.2 | 0.8 | 0.4 | 1.8 | 0.4 |
| Tesla Optimus | 0.8 | 0.8 | 0.6 | 1.0 | 0.8 | 0.8 | 0.6 | 0.4 |
| Unitree H2 | 1.2 | 1.0 | 0.8 | 0.4 | 0.2 | 1.0 | 0.8 | 0.2 |
| Fourier GR-2 | 0.8 | 0.8 | 1.0 | 0.4 | 0.2 | 0.4 | 0.8 | 0.2 |
## How to read these numbers
- Capability score: The Stage 4 cross-offering levelled score, 0–5, after rubric ceiling clamps. This is the score that ranks the Index.
- Proof score: Capability score scaled by evidence quality and breadth. A reference read on how well the public record backs the capability score — never ranked on.
- Coverage: How many of the 40 sub-axes carry a read from the public record. Low coverage does not soften the score — unevidenced sub-axes count as 0.
- Mean of 40 sub-axis scores, each 0–5. Sub-axes with no public evidence count as 0.
> Public-record scope. Scores read the published evidence record only; absence of evidence is shown as unknown, never as zero capability.

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## Attribution

Source: Cyborgs of Earth — https://cyborgsofearth.com/the-index
Cite as: Cyborgs of Earth, Cyborg Index, August 2026 edition. Capability score. https://cyborgsofearth.com/the-index
Framework: The Cyborg Index (8 capability axes · 40 sub-axes · anchored 0–5) — https://cyborgsofearth.com/methodology
Reuse terms: https://cyborgsofearth.com/licence. Free to quote and teach with attribution and a link.