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Graded 6 October 2026

Does Nanonets return an empty set when the document says none exist?

Nanonets returned the empty set the document called for. The input says no damage or exceptions were reported, and the output is an empty array; the capture shows the same field as List [0] with no rows.

1 of 1 test case passed

Every test case in this scenario has a result.

Pass rate100%1 of 1 gradable
Coverage1 of 1test case with a result
1PassDid everything it was expected to do.
0FailNo test case failed.
0Not gradableEvery result here could be graded.
0UntestedEvery test case in this scenario has a result.
The pass rate is a summary. The evidence is the test case below: what we sent, what we checked, what the tool returned, and the proof.

The test case

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Legitimately empty setPassEvidence
What we sent

“Extract the following field from this document and return the result as JSON: damage_exceptions — an array of objects with date, description, location, for any damage or exceptions recorded for this consignment.”

InputDocument (PDF)
Input invoice: no damage or exceptions
Open the PDF ↗
What the tool returned
JSON
{
  "damage_exceptions": []
}

JSON output: empty damage-exceptions array

Copied from Output file (JSON), lines 1–3

Open the JSON file ↗
Key momentsline 2
Expected vs. Found
✓Expected: Zero members in the required array; no invented records and no marker text as a member.Found: The output is an empty array with no rows, no null, no string, and no extra member.
Supporting proof
Proof 1Screenshot
Capture: empty result and closing note
Open original ↗
Why this result

It passes because the input says none were reported and the output is an empty array with no rows or extra member, so the empty-set requirement is met.

Also observed in this test case

Readable result. The screen shows the typed request and the closing line, so the empty result is understandable without the JSON file.

Tested by Rugved Nichite · evidence dated 10 September 2026

Configuration and setup

How this tool was set up for the run and what the test needed in place. Each row is a fact from the run's records; a fact the records do not hold is left out, not guessed.

Software that produced the output
Nanonets
Build or version
Not exposed by the hosted product
Surface
Web app
Set up before the run
The document had to clearly say the repeated damage-and-exceptions set was empty, and the requested field had to be a required array.
Tested
10 September 2026 · Rugved Nichite

How this scenario is graded

How we decide Pass, Fail and Not gradable. The same rules apply to every tool tested on this scenario.

How results are decided

Each test case gets one result per tool: Pass, Fail or Not gradable. A test case we haven't run yet shows Untested. There are no partial results.

The rules
  • Pass: the tool did everything the test expected, and nothing it said contradicts the correct answer.
  • Fail: at least one expected behaviour clearly didn't happen; the test case's result says which one and quotes the tool.
  • Not gradable: our evidence couldn't settle the outcome (for example a record we needed is missing). It is never counted as a fail, and the test case's result says what's missing.

Where this sits in the benchmark

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History of this result

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from the publication record
31 October 2026First publishedStructured Document Extraction v1

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This matches what I see

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Vendor notice →
Filed against this evidenceNothing yet. Challenges, counter-evidence and fix notices appear here with their outcome, and stay on the page after they are resolved.
Cite this result
aidemos.com/benchmarks/structured-document-extraction/results/nanonets/the-set-is-legitimately-empty · 1 pass · 0 fail · coverage 1/1 · graded 2026-10-06

The same record is available as structured data through the AI Demos MCP server, with the counts, the coverage and every per-test-case reason carried as fields.

Verify the proof files

These files support this result. Open a file to inspect the original evidence.

Input · Document (PDF) ↗application/pdf · 118 KB
Output file (JSON) ↗application/json · 0 KB
Proof 1 · Screenshot ↗image/png · 199 KB
File fingerprints (SHA-256)

A fingerprint identifies the exact file used for this result.

Input · Document (PDF)1bcc6c7b945956c5b6f5a87d223ed3d578a62aa2c56c5fc1e3abedb4cc4de72e
Output file (JSON)cdb7b9c65fb1e2111bfc3677dfa00520d79cfdf3d4d8606139d7612846b2e45a
Proof 1 · Screenshot78cdc59b1655e304aabcd3a405caf0b6c8958db922a21e533c7c9333374d34a4