Platform weight
The biggest difference is not whether both can process documents. It is how much platform comes with the purchase.
Bottom line
If you want a compact product boundary, LeapOCR is the cleaner fit. If you want enterprise platform depth, ABBYY has the stronger story.
LeapOCR
Built for a team that wants to move now
LeapOCR keeps the contract small: upload the document, define the output, and move on to workflow logic. That is useful when OCR is one important part of the product, not the center of a larger enterprise transformation program.
ABBYY
Built for a broader enterprise document story
ABBYY makes sense for teams that want a vendor associated with long-running OCR and IDP programs. That breadth can be useful, but it also means the evaluation often carries more enterprise process, integration planning, and platform thinking with it.