Prototype

Early model or sample of a product.

model sample draft

A prototype is an early model or sample of a product built to test a concept or process.

/ˈprɒtəʊtaɪp/

The word 'prototype' comes from the Greek words 'protos' meaning 'first' and 'typos' meaning 'form or pattern'.

example model test version

model design concept

mockup wireframe beta version

development process design phase

design engineering