A 25 cm open-source biped you train yourself with reinforcement learning. Playable out of the box.

The launch film · sound on
Meet the twin
Trained in sim, deployed on the real robot. This is the simulated twin the ducks were trained on.
Fun out of the box. Yours to retrain.
Every behaviour is a policy you can retrain on your own machine.
01
Train in simulation
Behaviours are learned in physics sim, on your machine or on Hugging Face Jobs.
02
Deploy on the robot
One step from simulation to the real thing.
03
Refine the simulation
Tune, re-train, re-deploy.
04
Publish the policy
Share your new behavior with the community!
Walk
Velocity-tracking gait.
Sit & stand
Sits down, holds the pose, stands back up on its own.
Kick
A one-shot boot, then straight back to walking.
Grab
Dips the beak to the ground, scoops, and pops back upright.
Roller skating
Roller skating locomotion when the skates are equipped.
Get back up
Flat on its back to standing, all by itself, ready for the next command.
One robot, four colourways
Every Microduck ships in one of four colourways. Same robot, same brains underneath - pick the shell that best fits you.
Out in the world
The real robot in real places - on desks, on the pitch, out at golden hour.
The robot, and what to add to it
The robot is everything you need on day one. The packs add play gear and spare parts.

$399
The robot
In the box
Robot, battery, USB-C cable, game controller.

$39
Dual charger, 2x batteries.

$119
3x spare motors, 5x motor cables, 2x batteries, dual charger, 10x NFC tags, Hugging Face credit, screwdriver, screw pack.

$39
Laser pointer, NFC polaroid, 2x rollers, ball, 10x NFC tags.
Built in the open
The SDK, the simulation and the full RL training stack are on GitHub. What the robot runs is what you can read, fork and retrain.
$ robotctl monitor # status of the robot$ robotctl configure # configure the robot$ robotctl update # update the robot
Apache-2.0
The whole software stack, permissively licensed
MuJoCo
The physics sim every policy is trained in
7 policies
Every shipped move, published and retrainable
Builds on show, policies to swap, help when a leg does something strange. The community lives on Discord.
End of tape · be kind, rewind
In four colourways. Ships before Christmas 2026.