K-Scale Labs
Y Combinator (Winter 2024) start-up founded by Benjamin Bolte and Matthew Freed to build open-source humanoid robots; it released the 3D-printable Stompy and later the K-Bot and Z-Bot, then shut down in late 2025 and open-sourced its designs.
- Robot models in the atlas
- 22 humanoids
- First robot
- 2024Latest 2025
- Headquarters
- San FranciscoUnited States
- Is it still sold?No longer soldEvery robot is retired or discontinued
- Who uses it?1 robot model in useBegan shipping Founder's Edition units in Oct 2025; only a handful delivered before…
- What is new?2025-11-20K-Scale Labs shuts down and open-sources its designs
Robots
2 robot models shown in public, from 2024 to 2025. Newest first. Open one for its full profile.
What is inside
Chips and parts suppliers named for K-Scale Labs's robots by the maker or reputable press.
Parts suppliers
Who uses it
Customers and deployments reported for K-Scale Labs's robots. Each robot's page links its sources.
K-Bot2025 · DiscontinuedBegan shipping Founder's Edition units in Oct 2025; only a handful delivered before shutdown in Nov 2025.
What is new
The latest stories about K-Scale Labs's robots, newest first.
- K-Scale Labs shuts down AI Engineer · K-Bot
- First K-Bots reach customers AI Engineer · K-Bot
The company
What it says about itself and what the sources record.
- Founded
- 2024
- Headquarters
- San Francisco, United States
- Focus
- Open-source humanoid hardware and software
- Funding
- About US$500K from Y Combinator, a US$4 million seed led by Fellows Fund, plus angel and strategic money (PEdaily); about US$400K left at closure
Similar makers
Other makers of humanoids, starting with those in United States.
Sources
3 sources behind this page.
Statistics only, not advice. No affiliation, sponsorship or endorsement. How we work · Terms