Hybrid actuator architecture
A serial-parallel design that combines roller-screw linear actuators with rotary actuators, according to Kepler. [6]
Price & availability
from $34,800
Starting · USD · OfficialOfficial — stated by the manufacturer or organizer
Original price: CNY 248,000
Source: Kepler K2 completes eight-hour livestream at WAIC 2025 ↗ · Aug 1, 2025
Official starting price for the Bipedal Basic version; USD conversion is approximate at about 7.13 CNY/USD. Earlier press cited USD 30,000
Available to order from Sep 2025
Current dataset status: Commercial.
Other quoted prices
Historical, launch and third-party figures remain separated from the current price.
- from $30,000Sep 27, 2025 · Press
USD 30,000
Press-reported price with no attribution; the official starting price is RMB 248,000 (see price).
Kepler K2 Bumblebee Humanoid Robot ↗
Product overview
About Kepler K2
The K2 'Bumblebee' is a 175 cm, 75 kg industrial humanoid from Shanghai-based Kepler Robotics. Kepler showed it at ICRA 2025 in Atlanta in June 2025, and gives it 52 degrees of freedom, with 11 per dexterous hand, and more than 80 integrated sensors. Kepler's press release calls it the world's first commercially available hybrid-architecture humanoid, a claim not independently verified here.
The K2 uses a hybrid serial-parallel design that combines roller-screw linear actuators with rotary actuators. Kepler quotes a 15 kg payload per arm and 30 kg with both arms, up to eight hours of operation on a one-hour charge, and 100 TOPS of onboard compute. An eight-hour livestream at the 2025 World Artificial Intelligence Conference (WAIC) in Shanghai was used to show endurance. Kepler presents the robot for factory, automotive and logistics work.
Kepler announced mass production on 26 September 2025 and listed a bipedal basic price of RMB 248,000, about USD 34,800 at an approximate rate. Jiemian reported preliminary orders in the thousands, which are indicative rather than firm. Kepler's website returned no product or sales content during research, so no official order or contact page is confirmed for this robot.
“The K2 "Bumblebee" features a hybrid serial-parallel design that combines roller screw linear actuators with rotary actuators”
Capabilities
Key features
Claimed eight-hour runtime
Kepler claims up to eight hours of operation on a one-hour charge; an eight-hour livestream at WAIC 2025 was used as a demonstration. [5][6]
Payload per arm
Kepler quotes 15 kg per arm and 30 kg with both arms. [5]
11-DoF dexterous hand
Each hand has 11 degrees of freedom and 25 force-sensing contact points, plus a six-axis wrist force sensor. [5]
Hardware profile
Specifications
Official — stated by the manufacturer or organizerReported — stated by a credible third partyEstimated — derived or approximate
Body
Mobility
- Actuation
- ElectricOfficial — stated by the manufacturer or organizer[6]Hybrid architecture combining planetary roller-screw linear and rotary actuators
Power
Hands & Manipulation
Compute & Sensing
- Onboard compute
- Onboard compute rated at 100 TOPS (chip not named)Official — stated by the manufacturer or organizer[2]
- Sensors
- More than 80 integrated sensors, Six-axis force/torque sensor at the wristOfficial — stated by the manufacturer or organizer[2]
- AI stack
- Kepler VLA+Official — stated by the manufacturer or organizer[6]Company-named vision-language-action system
Show unknown fields (4)
Mobility
- Maximum speed
- Not published
- Peak joint torque
- Not published
Power
- Battery
- Not published
- Swappable battery
- Not published
Quick answers
Kepler K2 FAQ
How much does Kepler K2 cost?
Kepler K2 is listed at from $34,800 (Starting, official). The source also states CNY 248,000. [5][6]
Can you buy Kepler K2?
Kepler K2 is classified as commercial, but this record does not include a verified official order link. [1]
How tall is Kepler K2 and how much does it weigh?
Kepler K2 is 175 cm tall and weighs 75 kg (Bipedal K2). [5]
How long does the Kepler K2 battery last?
The stated runtime is 8 hours per charge; Up to eight hours of operation on a single charge. [5][6]
How many degrees of freedom does Kepler K2 have?
Kepler K2 has 52 listed degrees of freedom; Total DoF. [5]
Who makes Kepler K2?
Kepler K2 is made by Kepler Robotics, based in China. [1]
What is the predecessor or successor of Kepler K2?
Kepler Forerunner K1 is its predecessor; Kepler K3 Bumblebee is its successor. [1]
Side by side
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Head to head
Popular comparisons
Lineage
Model family
Evaluation footprint
Benchmarks & competitions
No benchmark embodiments or results reference this robot yet.
Related
Similar robots
Evidence
Sources
- [1]Kepler official website ↗Kepler Robotics · official · accessed Oct 8, 2026
- [2]Kepler Robotics showcases K2 Bumblebee at ICRA 2025 ↗The Robot Report · press · accessed Oct 8, 2026
- [3]Kepler announces mass production of its K2 Bumblebee ↗Humanoid Robotics Technology · press · accessed Oct 8, 2026
- [4]China's humanoid robot start-ups race to scale before Tesla arrives ↗Jiemian News · press · accessed Oct 8, 2026
- [5]Kepler K2 completes eight-hour livestream at WAIC 2025 ↗Kepler Robotics via PR Newswire · official · accessed Oct 8, 2026
- [6]Kepler K2 moves into mass production ↗Kepler Robotics via PR Newswire · official · accessed Oct 8, 2026
- [7]Kepler K2 Bumblebee Humanoid Robot ↗TechEBlog · press · accessed Oct 8, 2026