When
You need a precisely dimensioned part or a model that must satisfy engineering tolerances.
Then
Use a measured CAD or manual modeling workflow.
A visual preview cannot verify dimensions, clearances or manufacturability. Even an appealing Neural4d result would need independent measurement.
When
You need a specified topology, rig or export format for an established pipeline.
Then
Confirm those requirements before using an AI-generated asset, or commission a model to spec.
A favorable visual review does not establish that geometry, deformation or interchange requirements are met.
When
You cannot check the destination's terms or inspect an output in your own software.
Then
Postpone the decision rather than relying on this page's verdict.
The two checks most relevant to trust—current permissions and actual asset quality—remain unresolved.