Document AI and RAG Systems
Turn contracts, invoices and PDFs into data you can query.
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About the service
We build retrieval systems and document pipelines that read invoices, contracts, technical specifications, tenders and correspondence, extract structured fields and make the content searchable in natural language. Output goes into your ERP, CRM or database, with a confidence score and a human review step for anything uncertain.
96%
field extraction accuracy on German invoices
30s
to answer a question that used to take an hour of searching
10k+
documents indexed in a typical first rollout
Challenges we solve
- #1
Accounting keys in hundreds of supplier invoices by hand every month.
The pipeline reads supplier, invoice number, dates, net and VAT amounts and line items, validates against the purchase order and posts to DATEV or your ERP, flagging only the exceptions.
- #2
Nobody can find which contract contains which cancellation clause.
We index the contract archive with clause-level chunking and metadata, so a question in German returns the exact paragraph, the document and the page, with a link to the original file.
- #3
Scanned documents from the 1990s are unreadable for automated processing.
We run modern OCR with layout recognition, handle tables and multi-column pages, and route anything below the confidence threshold to a short human check instead of guessing.
- #4
The system answers confidently with information that is not in any document.
We enforce strict grounding with source citation, a relevance threshold below which the system declines to answer, and an evaluation set that is re-run on every change to catch regressions.
Document & data processing (RAG)
Companies in the DACH region sit on decades of knowledge locked inside PDFs that nobody can search. A retrieval-augmented system changes that: an employee asks a question in German and gets an answer with the exact clause and page reference. On the processing side, automatic extraction removes the most tedious back-office work of all. We build both with an evaluation set so accuracy is measured, not assumed, and improved release by release.
Recommended services
- 01 - 7AI voice agents (AI telephony)Every call answered in German, at midnight and during the rush.
- 02 - 7AI chatbots & assistantsAn assistant that answers from your documents, not from guesswork.
- 03 - 7CRM integration & automationStop copying data between tools that should already talk.
- 04 - 7Sales pipeline automationEvery lead followed up, scored and routed without a reminder.
- 05 - 7Workflow automation (n8n / Make / Zapier)Replace the recurring manual task with a process that never forgets.
- 06 - 7AI content generationPublish ten times more, without sounding like a machine.
- 07 - 7Custom LLM integrationsLanguage models built into your product, not bolted on beside it.
Frequently asked questions
A document search over an existing archive starts at 4,500 EUR. An extraction pipeline with ERP integration and review interface typically runs 9,000 to 25,000 EUR depending on document variety.
Not if you do not want them to. We can run embedding and generation on EU servers or fully on-premise with open models. For less sensitive corpora a hosted EU model is cheaper and usually sufficient.
On structured documents such as invoices we reach 95 to 98 percent field accuracy. Free-form contracts land lower, which is why a review step for low-confidence fields is always part of the design.
We build an evaluation set of one to two hundred real questions with correct answers from your team and score every release against it. You see accuracy as a number, not as a feeling.
We apply access control at the document level, can mask personal data before it reaches the model, log every retrieval and implement deletion routines that also purge the vector index.
ourclients
- Markus LehmannReview from Google2 months ago
websitebestellen exceeded our expectations! The new website is modern, fast and precisely tailored to our target group. Working together was straightforward and highly professional. A clear recommendation!
- Sabrina HoffmannReview from Google2 months ago
Great experience from start to finish! The team at websitebestellen advised us excellently, implemented our wishes and created a wonderful website. Absolutely recommendable!
- Lea SchneiderReview from Google2 months ago
websitebestellen took our online presence to a new level! The site not only looks great, it also brings us noticeably more enquiries and customers. Thank you for the excellent work!
Related reading
- AI telephony: when it pays off and when it does notA sober look at voice agents for German SMBs: the call volumes that justify the investment, and the situations where a human is simply cheaper.
- RAG chatbots on your own documentsHow retrieval-augmented generation works in practice, what it costs, and why data preparation decides whether the answer is trustworthy.
- Mobile app or PWA? A decision guideWhat a progressive web app can do in 2026, where a native app is still unavoidable, and how the costs compare over three years.
Your contact person
Miriam Kraus
I read every request personally and get back to you within one business day.