A bottle 3D model is a basic 3D asset representing a bottle’s shape and structure (focused on "what the object is"), while a Keyshot 3D model is optimized for Keyshot rendering software, with pre-set materials/lighting to create realistic visuals (focused on "how it’s used").
Their core difference is purpose—bottle models are for designing the bottle’s form, while Keyshot models are tailored for fast, high-quality rendering in Keyshot.
Use cases: Choose a bottle model to design the bottle’s geometry; pick a Keyshot model to quickly render it with lifelike details in Keyshot without extra setup.