Evidence · first-party tested/Best AI Tools for Extracting Structured Data from PDFs and Business Documents

Keeps all 8 advertising spots as separate line-item records, with the JSON tree showing indices 0 through 7 and no adjacent-row merging.

✓ Worked🧾 artifact-verifiedoutput onlyTest date not recordedDatalab →
What was measured
Table & Record Completeness

Are all tabular rows (transactions, line items) extracted without merging, duplication, omission, or phantom records?

decisive for this rankingtransformation

For document data extraction, missing, merged, duplicated, or phantom rows directly corrupt the structured dataset and break downstream querying. (3 of 3 judges)

What was given, what came back

Test input: Invoice PDF · pdf · group: financial-document-extraction
Input — what we sent
Input not captured
This run recorded no prompt or input file for the test, so we cannot show you what produced the result below. Capture gaps are tracked, not hidden.

A 2-page broadcast advertising invoice PDF with 8 line items, complex time/day fields, large dollar amounts, and compliance text, used to test hierarchical line-item extraction and financial validation.

Why this input is hard
  • · Nested line-item hierarchy extraction
  • · Multi-page line-item continuity across a page break
  • · Large dollar amount precision and total validation
  • · Parsing time slots, day patterns, and air dates
  • · Extraction of alphanumeric ad IDs and reference codes
  • · Structured metadata mapping for advertiser, station, billing, and remit sections
  • · Political advertising and FCC compliance text recognition
Output — unretouched
Output 1
Output 1
Output 2
Output 2
Also checked on this input — same tool, 4 other criteria
Extraction Accuracy✓ WorkedExtracts the invoice metadata and monetary values accurately, including invoice 4064621-1, invoice date 10/28/12, gross_total 29750, agency_commission 4462.5, net_amount_due 25287.5, and payment_terms 30 Days.Schema Adherence✓ WorkedReconstructs the invoice into nested JSON objects and arrays that follow the supplied schema, including invoice_metadata and line_items rather than returning generic OCR text.Semantic Field Enrichment✓ WorkedCorrectly extracts derived scheduling fields on line 2, including day_of_week Su, time_slot 9a-10a, air_time 9:38 AM, and ad_id NRCCWI071005.Structural Clean Output◐ MixedThe generated JSON is structurally valid but not order-stable: line_items appears before other top-level sections that were defined earlier in the supplied schema.
Provenance
Observation
a2dfbd36-ebfc-4d14-ab59-0d615bee1ed4
Evidence run
ec4d736d-95f9-4c88-884c-e280435f7b7b
Study
Extract and query structured data from documents using natural language
Research task
86b9y25e5
Tested at
not recorded
Source
first-party
Evidence state
verified
Proof shown
output only
Cost / latency
not captured
Repeat run
not captured
Tester
not captured

The last three rows are honest blanks, not placeholders — our capture has no field for them yet.

Query this
get_evidence({
  tool: "datalab",
  scenario: "financial-document-extraction"
})
MCP · mcp.aidemos.com/api/mcp
JSON · ai.aidemos.com/v1/observations/a2dfbd36-ebfc-4d14-ab59-0d615bee1ed4
Free with attribution.
Same input, same check — 7 other tools
measured on Table & Record Completeness
Extend AI✓ WorkedIt extracts all eight invoice line items as separate rows, preserving description, airtime, rate, flight period, reference number, and campaign IDs without merging records.Landing AI✓ WorkedExtracts all 8 advertising line items as separate records, preserving the row count and scheduling structure instead of collapsing the table.LlamaParse✓ WorkedExtracts the invoice line_items table as 8 separate records (indices 0 through 7) without merging adjacent rows.Nanonets✓ WorkedIt extracts all 8 advertising line items as separate records without row merging or duplication.Reducto✓ WorkedKeeps all 8 invoice line items as separate structured rows without merging adjacent entries.Retab✓ WorkedReconstructs all 8 advertising line items as separate records without duplication or omission.Unstract✓ WorkedCarries a line item cleanly across the page break without duplicating or losing the row, showing page-break continuity in the line_items array.
This evidence is published in
Best AI Tools for Extracting Structured Data from PDFs and Business Documents →unstract →
Real inputs and real outputs, no retouching · every cell queryable via API & MCP · aidemos.com