https://www.kscale.dev/ Join RL challenge * K-Bot * Z-Bot * Docs * Join us * Discord * Github Join RL challenge Open-source humanoid robots, built for developers We're accelerating the timeline to a world with billions of robots, and making sure they're accessible, auditable, and beneficial to humanity. Join the RL training challenge Products General-purpose humanoid robots for developers, hobbyists, and researchers * Photo of K-Bot K-Bot General-purpose (4') humanoid From $8,999 USD [S:$15,999 USD:S] Pre-order now * Photo of Z-Bot Z-Bot Mini end-to-end (1.5') humanoid From $999 USD [S:$1,999 USD:S] Pre-order now * Photo of M-Bot M-Bot Compact humanoid (2.5') for home From $2,999 USD [S:$3,999 USD:S] Sign up for updates We're building a robotics stack that lets you deploy physical AI in the real world Our software, hardware, and machine learning stack is seemlessly integrated, allowing you to focus on building applications instead of installing packages. Owning every layer--from metal to model--lets us move faster, integrate more deeply, and open-source each breakthrough for the whole world to build on. Demos Experience our humanoid robots in action * Manipulation * Locomotion Our stack * Application * ML * OS * Hardware Application layer Create, deploy, and share robot apps, tools, and policies--built by you and the community. Robot Apps Store A single hub to install apps, customize behaviours, train new skills, and teleoperate your robot. Coming soon K-Lang Control your robot with a neural interpretation domain-specific language (DSL). ML layer Open-source library for GPU-accelerated robot learning and zero-shot sim-to-real transfer K-Sim K-Sim High-performance reinforcement learning framework optimized for training humanoid robot locomotion, manipulation, and real-world deployment. High versatility for tasks such as walking, dancing, household organization, and even cooking. Coming soonK-OS K-VLA A generalist policy using large-scale robot data with novel network architecture to enable the most capable and dexterous robot Locally run and capable of integrating with other VLAs such as Pi0.5 and Gr00t. OS layer Rust-based OS to run policies on the real robot, or evaluate in simulation K-OS K-OS Rust-based, fast, and reliable robot operating system combining hardware, software, and firmware. Ships with an easy-to-use Python SDK to easily develop robot applications. K-OS Sim K-OS Sim A digital twin / model evaluator for the K-Scale Operating System (K-OS) using the same gRPC interface as our real robot Effortlessly test and refine your models in simulation Hardware layer Deploy policies, VLA models and applications on robot hardware in real-time K-Bot K-Bot Z-Bot Z-Bot Coming soon M-Bot K-Sim A lightweight, modular framework for developing reinforcement learning policies in simulation and subsequently deploying on physical robots Made for speed Train policies in under an hour. Leveraging GPU accelerated libraries like JAX and Mujoco XLA, K-Sim can process over 100,000 samples per second (including training) on an RTX 4090. Smooth troubleshooting Quickly pinpoint the root cause of training regressions or improvements. All of the code defining experiment lives neatly in a single file which is automatically logged to TensorBoard. Optimized for sim-to-real A trained policy is immediately ready to be exported and deployed on a real robot, saving countless hours otherwise spent on maintaining two sets of infrastructure for training and deployment. Extensible by design K-Sim can be easily modified to fit your use-case, instead of the other way around. All of the code is fully open source so you can build on top of it with confidence. K-Sim Issac Brax Gazebo Differentiable physics GPU-accelerated TPU-accelerated Cross-platform Single-file training scripts Officially supported hardware Motion capture priors Stateful (RNNs, Transformers) K-Sim lets you iterate quickly and trust the code that you deploy on your hardware. Check out the source on Github or browse our docs Start training robots Our achievements We've completed 6 generations of robots in less than a year Feb. 2025*K-Bot V2 Our latest humanoid robot, designed and built for developers. Strong, modular and capable of everything from chores to industrial applications Photo of K-Bot V2 Jan. 2025*Z-Bot V2 Mass-manufacturable, robust tabletop humanoid robot. Used in Stanford's reinforcement learning class (CS 234) to teach about PPO. Photo of Z-Bot V2 Nov. 2024*K-Bot V1 Our initial full-sized complete aluminum prototype. Built as a lightweight, customizable, and developer-friendly test bench for our ML stack. Optimized for sim-to-real focus. Photo of K Bot V1 Nov. 2024*Z-Bot V1 Open-source 3D printed small-scale humanoid robot with BOM < 350. Optimized for portability and affordability. Leveraged as learning tool at universities for teaching robotics and RL. Photo of Z-Bot V1 Aug. 2024*Stompy Mini Enhanced version of Stompy with a smaller form factor, new actuators, upgraded battery, and wiring harness. Optimized for simulation training. Photo of Stompy Mini Apr. 2024*Stompy Our first 3D printed robot was built in 2 months with 4 3D printers. Optimized for cuteness. Photo of Stompy "The open-source robotics startup that caught OpenAI's eye" Read the article Community Collaborate, learn, and innovate with us Get rapid-fire development support through our Discord--home to 2000+ active members who have collaborated on 6 humanoid robots and counting. Join our DiscordSend feedback Our team working on K-Bot V2Hackathon demos at K-Scale LabsHackathon demos at K-Scale Labs About us We're engineers, hackers, and researchers that believe in a world where robots are made for everyone. Shoot us an email at inquiries@kscale.dev for any business inquiries or if you want to connect with us! See open roles (3) Our team (9) * Aaron * Ali * Ben * Chris * Ian * Jingxiang * Rui * Scott * Wesley Our supporters Backed by world-class investors Product K-BotZ-BotSend feedback Community DocsJoin usBenchmarks Legal Terms of servicePrivacy policy inquiries@kscale.devCopy email * * *