Check and compare bills of quantities — GAEB price comparison and BoQ version comparison
A new BoQ revision from the designer, three bids on the same BoQ, a final invoice against the contract BoQ: DocumentAnalyse reads GAEB DA XML files item by item and shows what changed, what is missing and where quantity × unit price does not match the total. The price comparison and the version comparison are computed locally in your browser — no AI, no credits. For PDF documents, AI-assisted document comparison with references is also available.
10 free credits · 7 days · no credit card required · then from €59/month
How it works
- 1Create an account and upload two to four GAEB files (DA XML, .x81 to .x86) under “Compare”. GAEB 90 and GAEB 2000 are not read — export them from your estimating software as GAEB DA XML.
- 2With two files: “Show version comparison” — every item of version A is compared with version B. With several bids: “Download price comparison (Excel)”.
- 3Review the result on screen or export the Excel check report — with every item, text changes, arithmetic check and the points to verify manually.
What is checked
- Every item by number (OZ): added, removed, modified or moved — no cap on the number of differences
- Short and long texts word by word: removed and added words and sentences highlighted; line breaks and spaces do not count as changes
- Quantity, unit, unit price and total price with difference; flags such as lump sum, provisional and alternative items
- Arithmetic check per item: quantity × unit price against total, rounding differences shown to the cent; totals before and after discount kept separate
- Notes, preliminary remarks and section titles are compared too; changes to manufacturer details or “oder gleichwertig” (or equivalent) are flagged as important
- GAEB price comparison for several bids: unit price min / average / max, spread, lowest bidder per item, missing items and arithmetic errors per bidder
- Honest completeness statement: duplicate or missing item numbers, unreadable values, faulty XML structure or images in text are reported, never hidden
Frequently asked questions about BoQ checks
Do the GAEB price comparison or the version comparison use credits?
No. Both are computed locally in your browser, without AI and without credits; for this evaluation the GAEB file does not leave your device. Credits are only used if you also start an AI analysis (e.g. 2-document comparison: 2 credits).
Which GAEB formats are supported?
GAEB DA XML, data types X81 to X86 (including X83 request for bids, X84 bid submission, X86 contract award). Not supported: GAEB 90 (.d8x), GAEB 2000 (.p8x) and X80, X87 and X89. Word, Excel and PDF BoQs can be checked with the AI comparison.
Are really all changes found?
For GAEB files, the version comparison checks every item and every covered field using fixed rules — no AI that could invent or omit anything. What cannot be compared reliably (image content, duplicate item numbers, completely rewritten long texts) is explicitly marked “Check manually” or “detailed comparison limited”. The result does not replace a professional review or the approval of the BoQ.
Does a renumbered item count as a new item?
Only if its content changed. An item that is identical under a new number (short text, long text, unit, quantity) is shown as “moved” — a price change stays visible. Merely similar items are never matched automatically; they carry a “similar to item …” note.
How large can a BoQ be?
For GAEB files, the version comparison limits neither the number of items nor the number of differences (tested among others with 3,000 items and with 400 items of about 1,500 words of long text each). For PDF BoQs, the AI comparison accepts up to 40 MB per file, and references are checked automatically against the PDF text up to 300 pages. Large PDF BoQs are best checked section by section.
Note: DocumentAnalyse supports the review of bills of quantities, bids and invoices. It does not replace a professional, procurement-law or technical review, nor approval by the responsible party.
10 free credits · 7 days · no credit card required · then from €59/month