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Compare · Microsoft 365 Copilot

PrivaSearch or Microsoft 365 Copilot?

Copilot sits in Word, Outlook and Teams and quickly finds something in your SharePoint. Handy for searching. PrivaSearch does it differently: the client file is first pseudonymised and released by a person, and then you analyse it with the latest model of the assistant you choose yourself.

PrivaSearch

Your own client files, safely searchable from the AI assistant you already use.

€175 a month for the whole firm, up to 10 employees

Microsoft 365 Copilot

Microsoft's AI assistant, as an add-on to a Microsoft 365 subscription.

€18.20 per user a month, on top of Microsoft 365

Go to the Microsoft 365 Copilot website

In short

Three differences that matter.

  1. Copilot reads everything an employee can access in Microsoft 365, with the personal data in it. PrivaSearch gives the assistant only released passages with pseudonyms.
  2. With Copilot, Microsoft chooses which model answers your question. That is fine for finding something; for a deep analysis of a client file you want to use the heaviest model of Claude, ChatGPT or Mistral Vibe yourself.
  3. Copilot is billed per user. PrivaSearch costs one amount for the whole firm, with the AI policy, the DPIA and the AI training included.

Side by side

Topic by topic.

What is said here about Microsoft 365 Copilot comes from that party's own website. The sources and the reference date are at the bottom.

Topic PrivaSearch Microsoft 365 Copilot
What the AI model gets to see Only passages in which names, addresses, numbers and other personal data have been replaced by pseudonyms, and only after a person has approved the privacy review. The link to the original stays in a vault and does not go along. The complete content of every document, every email and every chat the user has rights to. There is no pseudonymisation beforehand. Folders that are shared too widely therefore end up in answers; Microsoft recommends cleaning up the permissions in SharePoint first.
The GDPR Designed for the GDPR: less data to the model, a mandatory review, a log of every action, plus the AI policy, the DPIA starter document and the entry for your record of processing activities. Microsoft is a processor and offers a data processing agreement. You arrange the AI policy, the DPIA and the training of your employees yourself.
Hosting EU-sovereign hosting: storage and processing with a European provider. The assistant you connect may be American; it only receives the pseudonymised passages. Processing within Microsoft's EU Data Boundary, with exceptions: according to Microsoft, the models of Anthropic fall outside it and are switched off by default for European customers. Microsoft is an American company and is subject to the CLOUD Act.
The models The latest model from Claude, ChatGPT Business or Mistral Vibe. You choose the assistant and the model; when a new model comes out, you simply use it. Mainly models of OpenAI, with Copilot itself deciding which model gets a question. In most screens you choose a way of working, such as quick or deep thinking, and not the model.
What's included Search in your client files, the privacy review, the AI policy, the DPIA, the AI training for every employee, the audit log and the connection with your assistant. Chat, search and writing help in Microsoft's apps. No privacy review, no AI policy, no DPIA and no AI training.
The price €175 a month up to 10 employees, €350 up to 25. Per organisation, not per user; excl. VAT and the subscription to your assistant. €18.20 per user a month with annual billing, excl. VAT, on top of a Microsoft 365 Business subscription. For 10 employees €182 a month, for 25 employees €455.

To be fair

Where Microsoft 365 Copilot is stronger.

  • It sits in Word, Excel, Outlook and Teams: there is no separate environment.
  • It also works with email, calendar and meetings, not only with client files.
  • There is no review per document: everything is searchable immediately.
  • One supplier for office software and AI.

And the other way round

When PrivaSearch is the better fit.

  • Your client files contain personal data of clients or patients that you do not want to send to an AI model in full.
  • You want a deep analysis with the model of your choice, not only finding and summarising.
  • You want the AI policy, the DPIA and the AI training in the same subscription.
  • You want everyone to take part without paying per seat.

What's in PrivaSearch

Seven components, one subscription.

No separate packages and no extra charge per component. See the pricing.

  1. Search in your own client files Ask questions about your documents, with a reference to the source for every answer.
  2. Pseudonymise before the model Personal data is detected and replaced before any text goes to an AI model.
  3. Mandatory privacy review Nothing is searchable until a person has checked and released the document.
  4. AI policy, DPIA and record of processing activities Starter documents based on your own setup, for your lawyer or DPO to review.
  5. AI training for every employee The AI literacy from the AI Act, with an overview per person.
  6. Audit log and access management Every action recorded, with roles per project and mandatory two-step verification.
  7. Connection with your AI assistant Search from your assistant through MCP, within the same permissions and project boundaries.

The latest models

You work with the best model there is.

PrivaSearch supplies the passages; the thinking is done by the model you choose in your assistant. A platform that hosts open models itself works with smaller models that arrive later. A platform that chooses for you does not always choose the most powerful one.

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Sources · as of 13 October 2026

PrivaSearch is our own product. What is said here about Microsoft 365 Copilot has been taken from the public pages below and may have changed since: check it with the party itself before you choose. If you see something that isn't right, email privacy@privasearch.ai.

See in twenty minutes what happens to your documents.

We show it with fictitious client files from your sector: upload, detection, review, search and the connection with your AI assistant. Afterwards you'll know exactly what your team can use safely.

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