Show-your-work vs black-box invoice extraction
Black-box invoice extraction returns a single answer per field and asks you to trust it, which means you still re-check everything. Show-your-work extraction, InvoiceJet's approach, cross-checks two models, verifies the math, and shows a confidence level and source citation for every field, so you review only what is genuinely uncertain instead of the whole invoice.
Every invoice tool demos well on a clean invoice. The difference shows up in production, on invoice 40, when a field is wrong. What separates tools is whether they tell you when they are unsure. Reading an invoice is the easy part.
This page compares two approaches to that problem, independent of any specific product.
| InvoiceJet | Black-box AI extraction | |
|---|---|---|
| What you get per field | A value, a confidence level (high, mid, low), and a citation to the source on the document. | A value. No indication of how sure the model is. |
| How wrong readings are caught | Two independent models must agree, and math checks (line items sum, subtotal plus tax equals total) must pass. | A single model's output is taken as the answer. |
| How much you re-check | Only the fields flagged as uncertain. Clean invoices auto-verify with zero clicks. | Everything, because you cannot tell which fields to trust. |
| Verifying a value | Click the field; the exact text is highlighted on the original document. | Open the document and find it yourself. |
| What 'automated' saves | The checking time, which is the slow part. | The typing time only, if you still have to check every field. |
Common questions
Does showing confidence mean it is less accurate?
No. Confidence is about honesty, not capability. A tool that flags its own uncertain fields lets you fix the few that matter, instead of trusting all of them equally and finding the error in the books later.
Why two models instead of one?
Two independent models that must agree catch each other's mistakes. Agreement, combined with math checks on the totals, is what lets a field auto-verify without a human.
Turn your next invoice into verified data
Free for 10 invoices a month, no card. Every field carries a confidence level and cites its source.