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Third Rule B.V. (NL)aiNotaris
Secure AI workspace for notary offices offering two product tiers: aiAssistant for administrative support and aiExpert for legal research and document drafting. Provides an average of 3.5 FTE of extra capacity per office by automating file and email processing.

Shared spot16of 33 professional tools with a GDPR profileOur summary of what the provider itself publishes about your data: whether the data is stored in the EU (2 points), whether there is a certification or GDPR guarantee (1), and whether the provider is based in the NL or the EU (1). 3 or 4 points is Strong, 2 Good, 1 Limited, 0 Unknown. How we measure in legal practice
GDPR: Good
- Provider based in the Netherlands
- Publishes certification/GDPR safeguards
Price€1,499/month (aiAssistant), Enterprise on requestaiAssistant €1,499/month; aiExpert €3,299/month (excl. VAT; annual subscription 15% discount); aiEnterprise on request
Free trialNone foundNot found on the provider's website when checked on 22 September 2026
Based inNLNetherlands
ModelNot publicprivate Microsoft Azure EU; ISO/IEC 27001:2022; local anonymisation layer (Data-Schild); no training on customer data
Last checked: 22 September 2026 · How we check
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ainotaris.eu

What it does
aiAssistant: email, calendar and file management
aiExpert: legal research and deed drafting
Integration via API with existing notary softwareWorks in Citrix and Remote Desktop environments
Data-Schild: local anonymisation before processing
Privacy-sensitive data does not leave your own environmentAvailable on web, Windows, macOS, iOS and Android
Made in the Netherlands, hosted in EuropeComparable in legal practice
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Underlying model
GDPR check for legal practice private Microsoft Azure EU; ISO/IEC 27001:2022; local anonymisation layer (Data-Schild); no training on client data. Many tools build on a large model from, for example, OpenAI or Anthropic. If in doubt, ask for the data processing agreement: it states where your data goes.
Questions about aiNotaris
- Which AI model does aiNotaris use?
- The maker of aiNotaris does not publicly disclose which AI model sits underneath. Private Microsoft Azure EU; ISO/IEC 27001:2022; local anonymisation layer (Data-Schild); no training on client data.
- How much does aiNotaris cost?
- aiAssistant €1,499/month; aiExpert €3,299/month (excl. VAT; annual subscription 15% discount); aiEnterprise on request. Check the current price on the provider's website; prices change often.
- Who is aiNotaris for?
- aiNotaris is aimed at legal practice, notarial practice. It supports work such as reviewing contracts and clauses, summarising case law and files, and drafting letters and court documents.
- What should I watch out for with AI in legal practice?
- Professional secrecy is mandatory. Only enter client data into a business/EU variant with a data processing agreement, where input is not used for training. Always keep a lawyer in the loop.
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