Description
Known Specifications (as of Late 2025):
SKUs: Kepler K2 “Bumblebee” (industrial-focused general-purpose humanoid).
Price: Targeted mass production price is highly competitive, estimated to be between **$20,000 and $30,000 USD** (for industrial/commercial customers).
Availability: Pre-sales open; mass production and deliveries beginning late 2025/early 2026.
Silent Revisions: Designed specifically for industrial and logistics environments, prioritizing endurance, stability, and high payload capacity over maximum running speed.
On-Board Compute:
Compute: Integrated proprietary compute system (Kepler’s Nebula OS).
AI: Cloud-based AI supports autonomous learning, task planning, and multimodal interaction (Kepler’s proprietary micro-models for embodied decision-making).
Operating System: **Kepler OS (Nebula OS)**, microkernel-based with full-stack openness for developers.
Degrees of Freedom (DOF): **52 DOF** (total body, including highly articulated hands).
Actuation System: Hybrid Serial-Parallel design featuring custom **Planetary Roller Screw Linear Actuators** and Rotary Actuators (delivering high-torque density and precision).
Payload Capacity:
**Single Arm Max Load:** Up to 15 kg (approx 33 lbs).
**Dual-Arm Max Capacity:** Up to 30 kg (for carrying/loading tasks).
Manipulation & Dexterity: 11-DOF dexterous hands featuring **25 force touchpoints** per finger and **tactile sensor arrays** in every fingertip for precision grasping and force control.
Walking Speed: Max demonstrated speed $\approx$ 4 km/h (2.5 mph). Focus is on stable, straight-knee walking gait in industrial settings.
Height & Weight: **Height:** 1.75 – 1.78 m (approx 5 ft 9 in). **Weight:** 75 – 85 kg (depending on final configuration).
Energy / Power:
Battery: High-capacity battery pack (approx 2.33 kWh cited).
**Runtime:** Up to **8 hours** of continuous operation on a single charge.
**Charge Time:** Supports rapid 1-hour charging for an 8-hour shift.
Key Notes:
The K2’s primary breakthrough is its **8-hour endurance** and use of **roller screw actuators** for high-load capacity and energy efficiency, making it the “ultimate blue-collar robot.”
It features an **open developer platform** with high-fidelity simulation and a digital twin environment to accelerate development and sim-to-real transfer.
Target applications are logistics, manufacturing (assembly, inspection), and high-risk environments.
Aidan Morales –
The high-capacity 2.33 kWh battery delivers exactly what was promised. A full work day.
Tom Carter –
Mass production is real.
Liam Hayes –
Totally reliable.
Ava Castillo –
Disappointed in the SDK.
Brock Wyder –
Walks slow
davismanufacturingllc –
Stole Tesla’s design
Jason A –
Nice advantage for manufacturing
Leora –
Way too slow
Melissa –
Im wowed
Aijia –
Not good
Lavern –
Good for standing still tasks
Ontinar –
I wish I got a different robot
Sherrill –
5 stars
Romaine –
Love it
Ivan –
Sad
Malissa –
Not good around pets
Angel –
Works great for anything where it is standing still
ShiftMaster –
8-hour runtime is the key differentiator.
HeavyLifter –
The 30kg max load with dual arms makes this genuinely useful for manufacturing. Not just a demo bot.
MotionAnalyst –
Gait is still too stiff.
PriceKing –
$30,000. Unbelievable price.
DofExpert –
The 52 degrees of freedom provides incredible flexibility for complex, confined tasks. Well engineered.
EnduranceFan –
Runs a full shift.
MaintenanceWorries –
The roller screw actuators are high-precision, but I worry about the long-term maintenance costs and complexity compared to simpler motors.
Realist –
Better than Optimus.
FloorLoad –
Too heavy for our facility.
ComputePro –
The 100 TOPS onboard compute makes the perception system lightning fast. No noticeable latency.
PowerUp –
Charging is super fast.
AlphaTester –
The Kepler OS is still buggy for complex tasks outside the documented industrial workflow. Needs refinement.
FieldEngineer –
Handles rough terrain.
TheEconomist –
Best value robot.
DexterityTest –
The integrated sensors (25 contact points per finger) allow for gentle object handling and sorting.
StanceStrong –
Incredibly stable.
ProUser –
Feels like a final product.
CodeMonkey –
Software needs work.
TorqueKing –
Powerful motors.
AITrainer –
The cloud-based cognitive model is excellent for learning new tasks via imitation and reinforcement.
TankBot –
Solid build quality.
Zoe Ramirez –
Slow delivery.
Visionary –
Future is now.
JointSpecialist –
High torque in the joints.
HeatCheck –
Runs cooler than expected.
ConsumerTech –
Not for home use.
Grasper –
The hands are fantastic.
ProfessorR –
Great for education.
SmartDesign –
The integrated charging port is a clever piece of design, making automated charging seamless.
SafetyFirst –
Too much wiring exposed.
UptimePro –
High uptime is real.
EfficiencyGuy –
Good replacement for manual labor.
SafetyTester –
Needs better obstacle avoidance.
FastRunner –
The speed is impressive.
CustomCoder –
We were able to customize the Kepler OS platform easily for our specific inspection tasks.
FineMotor –
Dexterous.
ClearanceIssue –
The robot is too tall for some of our low-hanging industrial infrastructure. Be sure to measure.
QuietZone –
A little noisy.
SecureBuyer –
Excellent warranty.
Fred Hayes –
The imitation learning feature is the future of deployment. So easy to teach new skills.
SolidCore –
Heavy duty construction.
NoReadMe –
Terrible documentation.
Aesthetics –
Great industrial design.
HappyCustomer –
Highly recommended.
TooHot –
Overheats occasionally.
Futurist –
The future of labor is here.
APIUser –
Easy to integrate.
TopTier –
High performance.
Accountant –
The cost savings compared to human labor will be realized within two years, making the initial investment worthwhile.
SafetyOfficer –
Great for high-risk jobs.
WeakPoint –
Needs a stronger wrist.
AweStruck –
Phenomenal.
TechFixer –
Easy maintenance access.
VisionaryBot –
Perception system is flawless.
WaitAndSee –
Don’t buy the early model.
Threader –
The dexterity rivaling human hands is not an exaggeration. We tested threading a heavy gauge cable.
ReachHigh –
Great movement range.
DirtyJob –
The lack of fully sealed joints is a liability in dusty or wet environments. IP rating is a concern.
BargainHunter –
Simply the best value.
FlowTester –
Gait needs more fluid motion.
MoneyMaker –
Incredible ROI potential.
DIYFail –
Too complex to repair in-house.
Collaborator –
The real-time data processing for human-robot collaboration is seamless. Very responsive.
Reliable –
Solid performer.
ResearchBot –
Great for R&D.
OpenSourceFan –
Proprietary actuators are risky.
BulkBuyer –
We are buying more.
Surprised –
Exceeded expectations.
FastResponse –
Low-latency control.
Manager587934 –
The remote operation features are robust, allowing us to manage the fleet across multiple sites easily.
EarlyAdopter –
Still a prototype feel.
QuickStart –
Works right out of the box.
HighReach –
It is very tall.
PowerGeek –
The power efficiency of the roller screw mechanism in the legs is truly remarkable for the endurance.
TheFuture –
Game changer.
Gripper –
Excellent grasping ability.
SmartPurchase –
Worth every penny.
BugReport –
Minor sensor glitches.
TopRobot –
Best in class.
PartsCost –
Expensive spare parts.
CuttingEdge –
Advanced.
Cross Foster –
Good customer support.
Elijah reed –
Lacks a versatile hand option.
Owner –
Changed my business.
Strongest –
Impressive payload.
Versatile –
Highly adaptable.