# OpenRobotKits
> Live price and stock across sellers for open-source robot kits, real total cost, demo videos. Checked daily.

## Robots
- [SO-101](https://openrobotkits.com/robots/so-101/): Two 6-servo arms: move the leader by hand and the follower copies it, built for Hugging Face LeRobot
- [Reachy Mini](https://openrobotkits.com/robots/reachy-mini/): Open-source desktop robot with an app store, from $399 (Lite) or $499 (Wireless)
- [Microduck](https://openrobotkits.com/robots/microduck/): 25 cm open-source biped duck with 15 motors, $399 pre-order
- [phospho Junior dev kit](https://openrobotkits.com/robots/phospho-junior/): phospho SO-100 arm kit with VR teleoperation and phosphobot software, from 995 EUR
- [HopeJR](https://openrobotkits.com/robots/hopejr/): Hugging Face estimated about $3,000 per unit for its 66-DoF open humanoid
- [RX1](https://openrobotkits.com/robots/rx1/): Human-sized two-armed open humanoid, MIT-licensed, BOM totals $1,238 with optional parts
- [Berkeley Humanoid Lite](https://openrobotkits.com/robots/berkeley-humanoid-lite/): Parts for the full humanoid total $4,312 (US prices), per the Berkeley paper
- [Asimov v1](https://openrobotkits.com/robots/asimov-v1/): 1.2 m, 35 kg open-source humanoid with 25 actuated joints; DIY kit $20,000
- [PAROL6](https://openrobotkits.com/robots/parol6/): Open-source 3D-printed 6-axis arm, 408 mm reach, 0.1 mm repeatability
- [BCN3D Moveo](https://openrobotkits.com/robots/bcn3d-moveo/): Fully 3D-printed, Arduino-driven open-source arm; BOM, CAD and manual on GitHub
- [Stringman](https://openrobotkits.com/robots/stringman/): Four motors reach a whole room: open-source cable robot, assembled for $795

## Spotted
- [Robots spotted on X this week](https://openrobotkits.com/spotted/): new open-source robots and kits found on X in the last 7 days

## For AI agents
- [For AI agents](https://openrobotkits.com/for-agents/): connect the read-only MCP server at https://openrobotkits.com/mcp (tools search_robots, get_robot, where_to_buy) or call the JSON API
- [All robots as JSON](https://openrobotkits.com/api/robots.json): slug, type, lowest in-stock price, stock state, license, page link
- [One robot as JSON](https://openrobotkits.com/api/robots/so-101.json): every offer with seller, price, stock and buy link, plus sourced facts
- [OpenAPI](https://openrobotkits.com/openapi.json)
- [Every robot in full text](https://openrobotkits.com/llms-full.txt)
- Data is refreshed daily around 9 AM Bangkok

## Answers
- [How much does the SO-101 robot arm cost?](https://openrobotkits.com/answers/how-much-does-the-so-101-robot-arm-cost/)
- [SO-100 vs SO-101: what changed?](https://openrobotkits.com/answers/so-100-vs-so-101/)
- [Where to buy an SO-101 kit that is in stock today](https://openrobotkits.com/answers/where-to-buy-an-so-101-kit-in-stock/)
- [Best robot kits for adults who want to build a real robot](https://openrobotkits.com/answers/best-robot-kits-for-adults/)
- [How much does a humanoid robot kit cost?](https://openrobotkits.com/answers/humanoid-robot-kit-price/)
- [Open-source robot arms you can 3D print](https://openrobotkits.com/answers/open-source-robot-arm-you-can-3d-print/)
- [Reachy Mini Lite vs Wireless: which one to buy?](https://openrobotkits.com/answers/reachy-mini-lite-vs-wireless/)
- [Open-source robot dog kits you can build](https://openrobotkits.com/answers/open-source-robot-dog-kits/)
- [Which robot kits work with Hugging Face LeRobot?](https://openrobotkits.com/answers/which-robot-kits-work-with-lerobot/)