Evidence · first-party tested/Best AI Tools for Extracting Structured Data from PDFs and Business Documents
It undercounts the transaction table, extracting 47 transactions when the statement actually contains 51, so 4 records are missing.
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: Bank Statement PDF · pdf · group: financial-document-extraction
Input — what we sent
A 4-page bank statement PDF with 51 transactions, balances, rewards, and disclaimer text, used to test schema-driven extraction of dense financial tables and multi-page continuity.
Why this input is hard
- · Table extraction across 50+ transaction rows
- · Multi-page continuity with BALANCE FORWARD bridges
- · Structured metadata vs. free-text transaction descriptions
- · Numerical accuracy for balances, deposits, withdrawals, and summaries
- · Nested schema population for account, branch, balances, rewards, and disclaimers
Output — unretouched
Also checked on this input — same tool, 5 other criteria
Extraction Accuracy✓ WorkedIt accurately fills core statement metadata and balances, including account number 42710540422, opening balance 114453.65, and closing balance 116149.46.Extraction Accuracy◐ MixedIt leaves date and value_date blank on multiple transactions even when the source row contains them; the report says 15+ transactions are affected.Extraction Accuracy✗ FailedIt leaves summary.total_transactions null even though the statement has 51 transactions, so the summary count is not extracted as a usable value.Schema Adherence✓ WorkedIt preserves the requested nested schema directly in the output, populating structured objects such as statement, account, balances, transactions, summary, rewards, and disclaimers instead of flattening the document into OCR text.Semantic Field Enrichment✗ FailedIt does not populate the derived transaction_type field, leaving it null across the statement instead of classifying deposits and withdrawals.
Provenance
- Observation
- 4ecae670-4417-4bc0-98d5-6f6fe27654e0
- 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
- input + output shown
- 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: "nanonets",
scenario: "financial-document-extraction"
})MCP · mcp.aidemos.com/api/mcp
Free with attribution.
Same input, same check — 7 other tools
measured on Table & Record Completeness
Datalab✗ FailedCan attach a transaction to the wrong date when rows are merged, with an 18 Jun 19 withdrawal appearing under a 19 Jun 19 record in the extracted output.Extend AI✓ WorkedThe extractor keeps transaction rows as separate records, and the report says it captured all 51 transactions without merging adjacent rows.Landing AI✓ WorkedPreserves the full transaction table as 51 separate statement records, without merging rows or dropping entries.LlamaParse✓ WorkedExtracts the bank statement's rewards section as structured repeated records, including accountNumber, titleDate, scheme, openingBalance, pointsAccrued, pointsRedeemed, adjustments, and closingBalance.Reducto✗ FailedDoes not preserve the repeating transaction table faithfully, returning 53 transaction records for a statement that contains 51 transactions.Retab◐ MixedOvercounts the transaction table summary: total_transactions is 43, while the report says the expected count is 40 after excluding Balance Forward, tax, and charge entries.Unstract✓ WorkedKeeps the transaction table intact across all four pages, with the full 51-row record set present and no merged or dropped rows.
This evidence is published in
Real inputs and real outputs, no retouching · every cell queryable via API & MCP · aidemos.com