Fields, not text
OCR turns the file into text lines, then a language model interprets them the way a bookkeeper would. What comes back is vendor, subtotal, tax, total, date, invoice number and individual line items as discrete values you can act on.
The distinction matters. A blob of extracted text still leaves the whole job to do. Discrete fields can be scored, matched, checked and approved one at a time.
It works out what the document is
The same pass classifies the document — a bill, a receipt, an invoice or a sales receipt — so it is filed correctly without you sorting the pile first.
Formats do not need to be consistent. A crumpled receipt photographed on a phone and a clean supplier PDF are both fine.
Duplicates caught before they are entered twice
Every document is checked against what you have already filed, so the same invoice arriving by email and again as a scan does not become two bills.
This is one of the errors that is cheapest to prevent and most expensive to find later, because a duplicate usually surfaces at reconciliation rather than at entry.
Alias-aware vendor matching
The party named on the document is matched to a vendor or customer you already have — including when the document carries a trading name, an abbreviation, or a slight OCR misspelling of the name you filed them under.
Without this, a supplier quietly becomes three supplier records and your reports stop adding up the way you expect.