Today we shipped the first Asimov 1 robots. Less than a year ago this was a few design files sketched on a napkin. Now it's on the way to 20+ countries. Thanks for being early and crazy enough to think a top-tier humanoid is something you can build yourself. Keep going.

Asimov is now zero-shot sim2real for locomotion. You train the policy in simulation. It runs on the robot without additional tuning. Blog: Order yours:

A humanoid robot with full open-source blueprints just became buildable, not just researchable. Asimov v1, from Menlo Research, publishes everything: mechanical CAD, electrical schematics, wiring harnesses, and a simulation model, all under open licenses. It's a 1.2-meter, 35kg biped with 25 actuated joints, a camera, a microphone array, and onboard compute split across a Raspberry Pi 5 and a Radxa CM5. Strength specs are public too: a 15kg bicep curl and an 18kg lateral raise per arm. Nobody has to wait for a factory either. Anyone with the fabrication know-how can source parts and build one from the published bill of materials, no license fee required. Worth knowing: not buyable off a shelf. The DIY kit is a $499 deposit toward a $15,000 target price, shipping summer 2026, or full self-sourcing and fabrication. An API, locomotion policy, and mobile app are all still "coming soon."

Built a robot configurator using open-source CAD files from Asimov 1 Opus 5 picked the materials it thought fit best and generated a bunch of poses to test One thing missing from the CAD files: hands So, That’s the next challenge for the models

We're going to see a lot more opensource robots being built over the next few years. Not just research prototypes but robots people can actually build, modify, simulate, train and eventually buy. We're already seeing the beginning of this shift, with projects publishing CAD, simulation models, software and even complete hardware kits. As the cost of hardware continues to fall, more independent builders, researchers and small teams will be able to create their own robots. The interesting part won't just be the number of robots being built. It will be everything built around them parts, models, datasets, simulation environments, training tools and software.

Fully open-source humanoid Asimov 1 is now on sale. ✸ 1.2 m, 35 kg, 25 powered joints. ✸ CAD, PCB, wiring and MuJoCo files are public. ✸ DIY kit: $20K. ✸ No hands included. ✸ 100+ hours to assemble. First deliveries start this month.

One more thing from yesterday. What makes that update special is that it's zero shot. The policy was trained entirely in simulation, then run on the real robot with no tuning in between. And it ran in IsaacLab, which we only moved to this week. Different physics engine, same configs, worked first try. The hardware seems to be doing the quiet work here. Motor communication and firmware behave the same every run, so sim and real stay close.

Good news on that. Asimov 1 assembly is much simpler and the docs are getting updated to match. A few hours a week is enough, and the manual and the assembly videos take you through it.