GR-1 vs Forerunner K2: Specs, Price & ROS Support Compared (2025)
Fourier Intelligence vs Kepler Robotics — independent, side-by-side analysis.
Quick Verdict
GR-1 leads in higher payload, while Forerunner K2 leads in more DOF, longer runtime. Overall, Forerunner K2 has an edge in 2 out of 3 compared categories.
GR-1
Fourier Intelligence
Forerunner K2
Kepler Robotics
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GR-1 Forerunner K2
Specifications
~$150,000–$170,000Price$20,000
165 cmHeight178 cm
55 kgWeight85 kg
40DOF52
50 kgPayload15 kg
1hRuntime8h
1.39 m/sSpeed—
YesStairsYes
NoLiDARNo
NVIDIA Isaac Lab ecosystemCompute100 TOPS
Ecosystem Openness
65
GR-1
/100
—
Forerunner K2
ROS + Isaac Lab + MuJoCo. Growing research community.
Pros and cons at a glance
GR-1
Pros
- Shipping to customers (verified commercial availability)
- High rated payload (50 kg) for industrial pick-and-place
- 40 degrees of freedom — full-body articulation
Cons
- Unit price not publicly disclosed (quote-on-request or enterprise-only)
- Short runtime (60 min) — frequent recharging or battery swaps
Forerunner K2
Pros
- Open for preorders
- Long runtime (8h per charge) for full-shift operation
- 52 degrees of freedom — full-body articulation
Cons
- Closed software stack — no public SDK or ROS support
Frequently asked questions
How do GR-1 and Forerunner K2 compare on price?
GR-1: ~$150,000–$170,000. Forerunner K2: $20,000. Only one of the two has a public unit price; the other publishes a range or enterprise-only terms.
Which has higher payload: GR-1 or Forerunner K2?
GR-1 rates a higher payload at 50 kg vs 15 kg. Payload ratings are vendor claims and do not always include a duty cycle — peak vs sustained payload can differ significantly.
Is GR-1 or Forerunner K2 actually available to buy?
GR-1 is shipping to customers. Forerunner K2 is open for preorders. Status reflects the vendor's published commercial position as of the last review and can change between announcement and actual delivery.
Which is better for ROS-based development: GR-1 or Forerunner K2?
GR-1 has ROS 1 only; Forerunner K2 has no ROS support. For research and multi-vendor robotics stacks, native ROS 2 is the strongest signal of ecosystem maturity.
Last updated: 2025