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The way most teams build physical AI today is a patchwork: one tool for simulation, another for the training loop, a hand-rolled data pipeline in between, and a fragile script to get onto the robot. Every seam is a place where formats break, assumptions drift, and weeks disappear. Cadenza replaces that patchwork with one stack, designed end to end — the SDK as the foundation you build on, and the CLI as the workflow that turns it into data, training, and deployments.

The status quo vs Cadenza

Typical stack todayCadenza Labs
SimulationA general physics engine you wire up yourselfMuJoCo core with robots, scenes, and an action library included
Data collectionCustom logging and labeling per projectEvery tick logged and scored automatically
TrainingSeparate framework, glue code to reshape dataRollouts → VLA data → LoRA in a couple of commands
Sim-to-realA rewrite from the sim loop to the robot loopThe same control loop runs in sim and on hardware
IterationRe-plumb the pipeline on every changeOne stack — a change flows straight through

Where the advantage comes from

One coherent stack

Every layer shares the same physics core, action library, and policy interface — no glue code, no format conversions between stages.

The loop you test is the loop you ship

Simulation and hardware run the identical control loop, so sim-to-real transfer isn’t a separate, fragile rewrite.

Data that labels itself

Every mission is logged tick-by-tick and scored automatically, so training data arrives clean and labeled — not as a separate annotation project.

Fine-tuning without the boilerplate

LoRA-based fine-tuning keeps specialization cheap, fast, and composable — swap task-specific adapters on a shared base model.

Why it matters: iteration speed

The point of a unified stack is velocity. Because every layer shares the same core, a change to a scene, a reward, or a policy flows through simulation, data, and fine-tuning without re-plumbing anything. Faster loops mean more rollouts, more data, and better policies — which is the whole game in physical AI.

Start building

Build with the SDK

The foundation — simulate robots, build scenes, and run policies in Python.

Operate with the CLI

The workflow on top — gather data, fine-tune, and deploy.