Graded 10 October 2026

Can Unstructured accurately read text from a cleanly scanned document?

Unstructured accurately recovered text from a clean, image-only scan. It preserved the certificate’s measurements, units and dates without adding text.

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

Each test case is judged on its own: Pass, Fail, Not gradable, or Untested. The scenario result above is based on this test case.

Clean scan — text recoveredPassEvidence

What we sent

InputDocument (PDF)

Input PDF: the scanned laboratory certificate with no text layer

Open the PDF ↗

What the tool returned

Markdown

Ms R. Sandiman Braithe Estuary Partnership Estuary House, Vardenne Quay Braithe BR3 4LN Our reference: KAL-11938/26 Date of report: 4 February 2026

## Certificate of analysis

Dear Ms Sandiman Thank you for the four water samples delivered to this laboratory on 28 January 2026. They were booked in as batch KAL-11938 and analysed by the methods shown. The results below relate only to the samples as received.

<table class="Table"><tbody><tr><td>Sampling point</td><td>Vardenne Channel, station VQ1</td></tr><tr><td>Date and time of sampling</td><td>27 January 2026, 09:40</td></tr><tr><td>Total suspended solids</td><td>41.6 mg/l (method KAL-M04)</td></tr><tr><td>Chloride</td><td>18,200 mg/l (method KAL-M11)</td></tr><tr><td>Ammoniacal nitrogen</td><td>0.42 mg/l (method KAL-M12)</td></tr><tr><td>Dissolved organic carbon</td><td>5.9 mg/l (method KAL-M22)</td></tr></tbody></table>

The suspended solids figure is higher than those reported for this station in December and January, which were both below 30 mg/l. The samples were taken on the ebb, two days after the last placement at Kellow Sands, and the result is consistent with that. The remaining samples will be held until 4 March 2026 and destroyed after that date unless you ask us to keep them. Yours sincerely

handwritten signature

Dr A. J. Prosser Laboratory Manager

Returned Markdown: the certificate text and results table without the letterhead or registration line

Copied from Output file (Markdown), lines 1–13

Open the Markdown file ↗

Key momentsline 7

Text

  0 | p1 | UncategorizedText | vlm_partition   | 
  1 | p1 | Header            | vlm_partition   | Kirkhollow Analytical Laboratories Ltd Braithe Road, Vardenne BR7 2HD 01632 960118 · reception@kirkhollow-labs.example
  2 | p1 | UncategorizedText | vlm_partition   | 
  3 | p1 | UncategorizedText | vlm_partition   | 
  4 | p1 | NarrativeText     | vlm_partition   | Ms R. Sandiman Braithe Estuary Partnership Estuary House, Vardenne Quay Braithe BR3 4LN Our reference: KAL-11938/26 Date of report: 4 February 2026
  5 | p1 | Title             | vlm_partition   | Certificate of analysis
  6 | p1 | NarrativeText     | vlm_partition   | Dear Ms Sandiman Thank you for the four water samples delivered to this laboratory on 28 January 2026. They were booked in as batch KAL-11938 and analysed by the methods shown. The results below relate only to the samples as received.
  7 | p1 | Table             | vlm_partition   | Sampling point Vardenne Channel, station VQ1 Date and time of sampling 27 January 2026, 09:40 Total suspended solids 41.6 mg/l (method KAL-M04) Chloride 18,200 mg/l (method KAL-M11) Ammoniacal nitrogen 0.42 mg/l (method KAL-M12) Dissolved organic carbon 5.9 mg/l (method KAL-M22)
  8 | p1 | NarrativeText     | vlm_partition   | The suspended solids figure is higher than those reported for this station in December and January, which were both below 30 mg/l. The samples were taken on the ebb, two days after the last placement at Kellow Sands, and the result is consistent with that. The remaining samples will be held until 4 March 2026 and destroyed after that date unless you ask us to keep them. Yours sincerely
  9 | p1 | UncategorizedText | vlm_partition   | handwritten signature
 10 | p1 | NarrativeText     | vlm_partition   | Dr A. J. Prosser Laboratory Manager
 11 | p1 | Footer            | vlm_partition   | Registered in England 2214887 · Results relate only to the samples as received

Element table: recovered text and classifications for the twelve returned elements

Copied from Captured file (text), lines 5–16

Open the text file ↗

Output file (JSON)

API response: twelve recovered elements, including the letterhead and registration line

Cited values6 values from this file

item 1 › metadata › enrichment_origins › text 1: { "type": "vlm_partition", "provider": "openai", "model": "gpt-5.4-mini" }
item 1 › metadata › partitioner_type: vlm_partition
item 2 › text: Kirkhollow Analytical Laboratories Ltd Braithe Road, Vardenne BR7 2HD 01632 960118 · reception@kirkhollow-labs.example
item 8 › text: Sampling point Vardenne Channel, station VQ1 Date and time of sampling 27 January 2026, 09:40 Total suspended solids 41.6 mg/l (method KAL-M04) Chloride 18,200 mg/l (method KAL-M11) Ammoniacal nitrogen 0.42 mg/l (method KAL-M12) Dissolved organic carbon 5.9 mg/l (method KAL-M22)
item 10 › text: handwritten signature
item 1 › metadata › data_source › url: file:///home/etl/node/downloads/00000000-0000-0000-0000-000000000001/d5052b49-certificate_of_analysis_KAL-11938-0efce0a2.pdf

Show the whole file (17 KB)

JSON

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        "record_locator": {
          "protocol": "file",
          "remote_file_path": "file:///home/etl/node/downloads/00000000-0000-0000-0000-000000000001/d5052b49-certificate_of_analysis_KAL-11938-0efce0a2.pdf"
        }
      },
      "filename": "certificate_of_analysis_KAL-11938-0efce0a2.pdf",
      "filetype": "application/pdf"
    }
  }
]

Open the JSON file ↗

Expected vs. Found

✓	Expected: Recover the visible text accurately.Found: Every visible word on the image-only page was recovered exactly across twelve elements, without added text. The letterhead and registration line returned as header and footer elements, omitted from Markdown.

Supporting proof

Comparison sheet: the source page, returned Markdown and OCR requirement

Execution summary: successful conversion, elapsed time and API settings

Why this result

The requirement was accurate text recovery from an image-only page. The full returned response preserved its visible words without additions, satisfying that requirement and supporting a Pass.

Tested by Chandresh Bisht · evidence dated 18 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

Unstructured

Build or version

Not exposed by the hosted product

Plan or tier

free tier

Model

gpt-5.4-mini

Surface

API

Set up before the run

A clearly scanned, image-only laboratory certificate containing ordinary text had to be converted in full to Markdown using the default pipeline, in one pass without tool-specific tuning or cropping.

Tested

18 September 2026 · Chandresh Bisht

Connected to

PDFPDF to Markdown test documents · version 1

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

This page is one cell of a larger study: one tool, one scenario. Only this benchmark's frame appears here.

Level	Name	Scope
Benchmark	Converting a complex PDF into clean Markdown with a hosted API →	12 scenarios · 13 tools
Capability	Scanned Document OCR →
Scenario	A cleanly scanned document →
Tool	Unstructured →

Global scenario definition → · Global capability definition → · Unstructured product page →

History of this result

What has happened to this result since it was first published. Runs and grades are never overwritten: a retest or a re-grade publishes a new result and keeps the earlier one readable.

from the publication record

11 November 2026First publishedConverting a complex PDF into clean Markdown with a hosted API v1

Act on this result

Nothing filed here edits the run or the grade. A challenge opens a review, and a review can produce a new run or a re-grade — which becomes the current result and leaves this one in the history.

This matches what I see

You run the same kind of test against your own setup and get the same behaviour.

Agree →

This does not match

Yours behaves differently. Tell us what you got, with a screenshot if you have one.

Disagree →

Point out an issue

Something here is wrong — a reference value, a transcription, a grade.

Report an issue →

Request a retest

On a newer build, a larger dataset, or your own setup.

Request a retest →

We have fixed this

Tell us what changed and we schedule a rerun of the failing test case. The old result stays as history.

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/pdf-to-markdown-apis/results/unstructured/a-cleanly-scanned-document · 1 pass · 0 fail · coverage 1/1 · graded 2026-10-10

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 · 747 KB

Output file (Markdown) ↗text/markdown; charset=utf-8 · 1 KB

Output file (JSON) ↗application/json · 17 KB

Proof 1 · Screenshot ↗image/png · 813 KB

Same content as Proof 1 ↗image/png · 1.2 MB

Captured file (text) ↗text/plain; charset=utf-8 · 2 KB

Same content as Proof 2 ↗image/png · 54 KB

Same content as Proof 2 ↗image/png · 92 KB

Proof 2 · Screenshot ↗image/png · 96 KB

File fingerprints (SHA-256)

A fingerprint identifies the exact file used for this result.

Input · Document (PDF)a459554d58b9480b19bb3a63598c500b961c3ad377492d18ff227bb439e1f68c

Output file (Markdown)770701536e9070392c9b3ff6b41c9a2837c77a2d1ca373a572061975f57f29d2

Output file (JSON)987e81602f904cf5a166c169229f7ddef2b6a4c6fa7de9fbccaca32f64af887c

Proof 1 · Screenshotd6a6ae10b7a4e8e215ea5ee1f139306c2a0ff01294364c8d86a50064771fe4b4

Same content as Proof 1a8cfa37be8a21440594ed1afab44096415ce5e61c3839a352ad0916ff7483c08

Captured file (text)0e6132af066da3c3c1519837ec05beec3af6ddae66cc1ee3daafbb64e81f4ced

Same content as Proof 26a133cc5400ef1d1992e239c639044153ed4e1f6ea12812949945aaa00527eb7

Same content as Proof 252a4d997c0ca0d3d4baca06d2e25063eeb434271459b4566459317f659906211

Proof 2 · Screenshot286d54344f5b433ed10c232824914f496659d1786296a1d4d3a4b495ace5a453