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Kepler K2 Bumblebee

Kepler K2 Bumblebee is a commercial industrial humanoid from Shanghai.

PurchasableAnnounced 2025-06-05Arena rating 1,069
$30,000
Contact sales
Price and where to buy
Kepler K2 Bumblebee, full body
Studio render based on public photos
Height
175cm5′9″Source
Weight
75kg165 lbSource
Payload
30kg66 lbSource
Runtime
8h480 minSource
Degrees of freedom
52DoFSource
Top speed
Not disclosed

Kepler K2 Bumblebee videos

official and independent footage
Introducing Kepler Forerunner K2Official · Kepler Humanoid Robot · 1y ago · YouTube
Kepler Robotics K2 Bumblebee Enters Mass ProductionOfficial · Kepler Humanoid Robot · 1y ago · YouTube
Meet the Kepler K2 Bumblebee Robot!Independent · AI BROS · 1y ago · YouTube
New Era of Robotics in China - Kepler K2 BumblebeeIndependent · PRO ROBOTS · 1y ago · YouTube

How big is Kepler K2 Bumblebee?

Kepler K2 Bumblebee stands 175 cm (5 ft 9 in) and weighs 75 kg (165 lb), about as tall as a 175 cm adult.

175 cm
Adult
175 cm
Kepler K2 Bumblebee
Compare its size with other robots →

Kepler K2 Bumblebee specs

official and sourced figures
Height175 cm (5 ft 9 in)source
Weight75 kg (165 lb)source
Payload30 kg (66 lb)source
Runtime8 hsource
Degrees of freedom52 DoFsource
Hand DoF11 DoFsource
Top speedNot disclosed
HandsKepler Dexterous Hands with 11 degrees of freedom per hand, 25 force-sensing contact points per finger, and a six-axis force/torque sensor at the wrist.
SensorsMore than 80 integrated sensors (company claim)
ComputeOnboard compute reaches 100 TOPS (company claim).

Price and availability

from evidence pack
$30,000
Contact sales
Kepler K2 Bumblebee price & where to buy →

What the Kepler K2 Bumblebee can do

evidence by capability dimension
Manipulation
Tier 1 · spec

K2 has 11-DoF hands with 25 force-sensing points per finger and a 6-axis wrist force/torque sensor. Kepler claims millimeter-level precision via rotary actuators and 15 kg per arm / 30 kg dual-arm payload. Trade-show and press-release demos show gestures, thumbs-up, waving and parade routines, but no long-horizon dexterity tasks are disclosed in the reviewed sources.

Autonomy
Tier 1 · spec

Source 1 says K2 navigated ICRA 2025 with 'steady, autonomous mobility' according to Kepler. Source 4 and Source 5 describe a layered VLA+ model interpreting natural language commands for tasks including sorting, assembly and guided tours. No independent autonomy audit, intervention logs or teleoperation disclosure for most demos was found.

Mobility
Tier 2 · demo

Source 5 describes a video in which K2 navigates bricks, plastic surfaces and grass and remains stable under external pushes. Source 1 and Source 3 describe humanlike, straight-knee bipedal gait and robot-parade walking. Source 4 production video includes straight-knee gait, obstacle navigation and dynamic performance evaluations.

Perception
Tier 1 · spec

Source 4 and Source 5 say K2 uses a layered VLA+ model to interpret semantic commands and carry out tasks. Source 3 describes an integrated multimodal interaction engine combining visual, auditory and tactile data, plus developer tools for vision, navigation and voice.

Human interaction
Tier 1 · spec

At ICRA/IROS, K2 reportedly greeted attendees with natural gestures, responded with thumbs-up and wave, and interacted fluidly with other robotic systems. No end-user conversational or instruction-following evaluation was found.

Reliability
Tier 1 · spec

Kepler claims up to 8 hours operation on a one-hour charge, near-zero static power consumption from roller screw actuators, 81.3% energy efficiency, and production-video content showing high/low-temperature tests, aging trials, obstacle navigation and thousands of hours of continuous uptime without failure.

Human-environment fit
Tier 1 · spec

K2 is human-sized at 175 cm and 75 kg, designed for industrial factory floors with a straight-knee bipedal gait and hybrid actuator design. The company markets it for manufacturing, logistics, high-risk operations and exhibitions.

What is proven

source-backed highlights
  • Company-described gait-upgrade video showing stable walking over bricks, plastic and grass under external pushes (kepler-k2_evidence_014).
  • Official mass-production and customer-shipment announcement (kepler-k2_evidence_009).
  • Confirmed orders over 47 million yuan reported by BigGo Finance (kepler-k2_evidence_016).
  • Official video title indicating an on-the-job log at Zhaofeng Motor (kepler-k2_evidence_021).

Caveats

read before you trust a demo
  • No walking speed in m/s was found in any reviewed source
  • No independent benchmark, autonomy audit, endurance log or safety certification.
  • No walking speed, battery capacity, or detailed task success rates.
  • Zhaofeng Motor deployment is only a video title, with no transcript or customer press release.

About the Kepler K2 Bumblebee

summary from sourced evidence

Kepler K2 Bumblebee is a commercial industrial humanoid from Shanghai. It is 175 cm, 75 kg, 52 DoF, with 11-DoF hands, a hybrid roller-screw/rotary actuator design, 100 TOPS compute, and a claimed 30 kg dual-arm payload and 8-hour runtime on a one-hour charge. Kepler lists a $30,000 base price or RMB 248,000 and announced mass production and shipments in September 2025. The most concrete positive evidence is a company-described gait video showing the robot walking over bricks, plastic and grass and remaining stable under pushes. Commercial proof is limited: confirmed orders of over 47 million yuan are reported, and an official video title suggests a Zhaofeng Motor on-the-job log, but 2025 revenue was only 4.34 million yuan with heavy losses and the company was acquired at a lower valuation. Autonomy, endurance and manipulation claims are mostly company statements without independent verification; many demo videos are title-only with no teleoperation disclosure

Evidence log

tiered public claims
T1
K2 Bumblebee is 175 cm tall, weighs 75 kg, has 52 degrees of freedom and more than 80 integrated sensors.
reputable media · 2025-06-05 · source
T1
K2 supports 15 kg per arm and up to 30 kg with both arms, up to 8 hours of operation on a one-hour charge, and millimeter-level precision for fine motor tasks.
reputable media · 2025-06-05 · source
T1
K2 has proprietary Dexterous Hands with 11 degrees of freedom per hand, 25 force-sensing contact points per finger, and a six-axis force/torque sensor at the wrist.
reputable media · 2025-06-05 · source
T1
The base model of K2 Bumblebee is priced at $30,000 and can perform the equivalent workload of about 1.5 full-time human workers, according to Kepler.
reputable media · 2025-06-05 · source
T1
At ICRA 2025, K2 greeted attendees with natural gestures, navigated the venue with steady autonomous mobility, and interacted fluidly with other robotic systems, according to the company.
reputable media · 2025-06-05 · source
T1
Kepler reported that over 80% of K2 core hardware is developed and manufactured in-house, and K2 units are currently being trialed across real-world industrial scenarios.
reputable media · 2025-06-05 · source
T1
At IROS 2025, K2 Bumblebee walked with fluid humanlike motion and performed during the conference robot parade.
official press release · 2025-10-27 · source
T1
Shanghai Kepler Robotics announced mass production of K2 Bumblebee and confirmed via video that it has begun shipping to customers.
official press release · 2025-09-27 · source
T2
Kepler's production video shows K2 straight-knee gait, assembly line operations, component testing, environmental tests, aging trials, obstacle navigation, thousands of hours of continuous uptime without failure, and dynamic performance evaluations.
official press release · 2025-09-27 · source
T1
K2 achieves up to 81.3% energy efficiency and up to eight hours of operation on a single charge.
official press release · 2025-09-27 · source
T1
K2 Bumblebee is priced at RMB 248,000 per unit.
official press release · 2025-09-27 · source
T1
Kepler signed framework agreements covering several thousand units with total contract value in the hundreds of millions of yuan.
official press release · 2025-09-27 · source
T2
In a video, K2 Bumblebee steadily navigated bricks, plastic surfaces and grass, and maintained stable steps when subjected to external pushes.
official press release · 2025-09-11 · source
T1
Kepler introduced a VLA+ training platform demonstration showing K2 Bumblebee using a layered VLA+ model to interpret natural language commands and carry out a wide range of tasks.
official press release · 2025-09-11 · source
T3
Kepler holds confirmed orders exceeding 47 million yuan, approximately $6.9 million.
reputable media · 2026-05-22 · source
T3
Kepler generated full-year 2025 revenue of 4.34 million yuan against a net loss of 66.94 million yuan.
reputable media · 2026-05-22 · source
T3
Former Kepler CEO Hu Debo has departed to start a new venture.
reputable media · 2026-05-22 · source
T1
K2 Bumblebee uses a hybrid serial-parallel actuator architecture, is designed for factory floor deployment with a 30 kg dual-arm payload and 8-hour operating time.
directory · 2026-10-29 · source

Guides about the Kepler K2 Bumblebee

Humanoid Robot Hands: How They Work, Compared

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Kepler K2 Bumblebee FAQ

answers from sourced data

How much does the Kepler K2 Bumblebee cost?

$30,000. That is the published list price. Configurations, shipping and import duties change the final cost.

Can you buy the Kepler K2 Bumblebee?

Only as a business customer. Kepler Robotics sells the Kepler K2 Bumblebee through direct sales contact.

How tall is the Kepler K2 Bumblebee?

The Kepler K2 Bumblebee is 175 cm (5 ft 9 in) tall according to Kepler Robotics's published specs.

How much does the Kepler K2 Bumblebee weigh?

It weighs 75 kg (165 lb) according to official specs.

How long does the Kepler K2 Bumblebee battery last?

Kepler Robotics lists a runtime of about 8 h per charge. This is a company figure, not an independent test.

Who makes the Kepler K2 Bumblebee?

The Kepler K2 Bumblebee is made by Kepler Robotics, based in China.

Is the Kepler K2 Bumblebee autonomous or teleoperated?

Public demos of the Kepler K2 Bumblebee are marked "partially disclosed" in our evidence review. Treat promotional footage as unverified unless the company states how it was controlled.

Sources

9 references
  1. Kepler Robotics showcases K2 'Bumblebee' humanoid at ICRA 2025 - The Robot Report · The Robot Report
  2. Kepler Robot Sells to Hangzhou Kelin at approximately $106 Million Valuation, Exposing Brutal Shakeout in Embodied AI — BigGo Finance · BigGo Finance
  3. Kepler Robotics Unveils K2 "Bumblebee" at IROS 2025, Building a Global Developer Ecosystem Through an Open Robotics Platform · Yahoo Finance
  4. Kepler Moves World's First Commercially Available Hybrid-Architecture Humanoid Robot Into Mass Production · AI Insider
  5. Kepler Robotics Announces Advanced Gait Upgrade for K2 "Bumblebee," Demonstrating the Potential of Hybrid Architecture · Yahoo Finance
  6. Kepler Robotics — Humanoid Robot Manufacturer · The Uncanny Squad
  7. Kepler Robotics K2 Bumblebee Enters Mass Production · YouTube Kepler Humanoid Robot
  8. Kepler K2 “Bumblebee” | On-the-Job Log — Zhaofeng Motor · YouTube Kepler Humanoid Robot
  9. Kepler K2 “Bumblebee” Impresses at the 2025 Zhangjiang Embodied AI Expo · YouTube Kepler Humanoid Robot