Accuracy depends on the input
The geometry an AI proposes can be very good. The numbers are a different question. If a tool reads dimensions straight from a photo, it is estimating, because absolute size cannot be recovered from a single image. Those estimates can look confident and still be wrong.
Anchor it to a real measurement
The fix is to give the drawing a reference. Measure one feature with a caliper, enter that value, and the whole drawing scales to it. From there, every dimension is derived from your part rather than guessed. This is why a good tool asks you to set the scale instead of pretending it already knows it.
A drawing is a contract for what you will accept when the parts come back. Confirm the dimensions that control fit and function yourself. That five-minute check is what makes an AI drawing safe to manufacture from.
Go deeper
We cover the underlying reason a single photo cannot reveal size in from photo to technical drawing.