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Head to head.
Choose robots to compare, or use the roster picker below. Spec-for-spec diff, Reality Score side-by-side, shareable URL.
Start with a guided matchup
Figure 02 vs Apollo→
Two factory pilots, very different transparency levels.
Atlas Electric vs Optimus Gen 2→
Verified robotics lab maturity versus manufacturing-scale ambition.
Neo vs Digit→
Home-first soft robotics versus warehouse-first biped logistics.
G1 vs H1→
Unitree's compact platform against its faster full-size humanoid.
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Quick read
GR-3 Series leads on more comparable public fields than Kepler Forerunner K2. This is not a blanket verdict: missing values are treated as not sourceable, and Reality Score/lifecycle should be read alongside the spec rows.
Kepler Forerunner K2 leads on
- Runtime
GR-3 Series leads on
- Reality Score
- Weight
- DoF (total)
Specs
Spec
Kepler Forerunner K2
GR-3 Series
Lifecycle
Demo
Demo
Reality Score
46 / 100
51 / 100
Height
175 cm
165 cm
Weight
75 kg
71 kg
Payload
Not publicly comparable.
Not publicly comparable.
Not publicly comparable.
Runtime
8h
3h
Top speed
Not publicly comparable.
Not publicly comparable.
Not publicly comparable.
DoF (total)
52
55
DoF (per hand)
No sourceable public value for one side.
11
No sourceable public value
Actuator
Electric
Electric
Teleop
Hybrid
Hybrid
Evidence
Evidence
Kepler Forerunner K2
GR-3 Series
Public specs
Yes
Yes
Named customer
No
No
Independent verification
No
No
Teleop disclosure
Yes
Yes
Last reviewed
2026-05-19
2026-06-06
Source confidence
Source list published
Source list published