AI that never
leaves your office.
Butler Suite is your private AI butler — an AI suite for meeting transcription, LLM chat, translation and research tools running entirely on your own hardware. Your data stays yours. Always.
Built for the GDPR Hosted in the EU
90+
Active users
3
Pilot partners
100%
On-premise
0
Bytes to the cloud
Why Butler exists
Sovereignty is the whole point.
AI has opened doors onto computing that were not open before: automation, and an ease with the machine that genuinely changes how work gets done. The problem lies elsewhere. Over the next few years AI will settle into every layer of companies infrastructure in Europe, and the overwhelming majority of that use rests, and will rest, on American and Chinese giants. That is where the question of sovereignty begins.
Because one of Europe’s great resources is the way it thinks. Our education, our research and our professional craft are among the most valuable things this continent has. And when you use an AI you do not only hand over what you are working on, you hand over how you work. Our way of resolving problems, of doing things leaves the continent, trains a model, and returns to us as a product: a loop of dependency, a digital colonisation of our education and our know-how. Extrapolated, we would not need that education any more, because the models have it for us. But since we do not control the models, and their price, we no longer control our own intelligence.
Hence the importance of keeping part of our work with AI under control: on a physical machine we own, that we can see and hear, standing close to us. It is a safety net first, the day access to the big models closes, or is repriced, part of the work stays here and stays ours. It is also the only serious way to handle sensitive data: the tool is encapsulated, and it is controlled. That is precisely why Butler exists, an AI toolbox under the desk that already does a good share of the job well, and with which you own a piece of your sovereignty and your freedom.
The compute is concentrated
A handful of companies control the hardware that frontier models are trained on. Everyone else rents access — at a price, and under conditions, they do not set.
One of Europe’s great resources is how it thinks
What leaves is not only your work — it is your method. It trains a model somewhere else, and comes back as a product you rent.
Built for the GDPR
Processing in the EU, deletion you control, nothing sold or shared with a third party.
Never used for training
Not a byte of what you do trains a model — not ours, not anyone else’s. Nobody knows what you do with it.
In your office if you want
The full version runs on site, on hardware you control, and keeps working without an internet connection.
One tool instead of five subscriptions
Chat, meetings, translation, research, documents — in one place, on one machine, for one price. No stack of per-seat American SaaS.
That is the whole idea: keep the work, the data and the know-how where they were produced.
The problem
Powerful AI shouldn’t cost you your data.
Every document uploaded to a cloud AI service leaves your control. Butler Suite is built for teams that can’t compromise.
Data leaves your control
Proprietary research, client records and strategy documents end up on someone else’s servers — outside your jurisdiction.
Compliance is a minefield
GDPR, medical confidentiality, attorney–client privilege: cloud AI makes every upload a legal question.
Dependency by design
Subscription prices rise, APIs change, services shut down. Workflows built on external systems are hostages.
Knowledge evaporates
Meetings, decisions and expertise disappear into inboxes and heads. Nothing is searchable, nothing compounds.
The tools
What is actually in it
Everything Butler does, grouped by the work. Each one is a real tool your team opens and uses — not a line on a feature list.
Writing & language
4 tools
- Chat A conversation with an assistant, with your own documents and the live web available to it.Chat
- Translator Side-by-side translation of text or a whole PDF.Translator
- Proofreader A review pass over a document that returns suggestions you accept or dismiss one at a time.Proofreader
- Butler Studio A collaborative document editor, with the assistant right inside the interface.Butler Studio
Your documents & what Butler makes of them
6 tools
- Deep Research A question in, a structured and fully sourced report out — Butler plans the subtopics, searches, reads the sources and writes.Deep Research
- Scholar Review An AI review of a PDF — paper, thesis or report — where every remark is anchored to the exact spot in the document.Scholar Review
- Knowledge bases Your own document libraries. Butler indexes them so answers cite your files instead of guessing.Knowledge bases
- Database Explorer Every knowledge base drawn as a graph, a map and an overview — so you choose what the AI should read before it answers.Database Explorer
- Web Vacuum Copies a whole website into one of your knowledge bases — pages, images and the documents it links to — and keeps that copy up to date.Web Vacuum
- Assistant Training Build your own chat assistant: give it a role and connect it to your knowledge bases.Assistant Training
Meetings & records
3 tools
- Meeting transcription Turns speech into a written transcript, then into a report you can edit and export.Meeting transcription
- Meeting Report Templates Manage a set of templates that control what goes into a meeting report and how it reads.Meeting Report Templates
- Speaker Dictionaries Teach Butler the voices of your group so transcripts carry real names instead of “Speaker 1”.Speaker Dictionaries
Making things
5 tools
- Presentation Creator Turns a paper, a thesis or a report into a compiled LaTeX Beamer deck — figures placed, slides written, PDF built.Presentation Creator
- Animation Studio Make your own animations: Butler writes a scene with Manim — the library behind the 3Blue1Brown videos — renders it and hands you the video.Animation Studio
- PDF Handling Six utilities for working with PDFs.PDF Handling
- Excalidraw Boards A flipchart for sketches, diagrams and visual notes, saved as boards.Excalidraw Boards
- CAD Studio Describe a part in plain words and get a parametric CAD model back — exact STEP for the workshop, STL for the 3D printer.CAD Studio
New · Database Explorer
You choose the focus. The AI answers to the point.
Your documents as a graph, a map and a dashboard. Click the theme, the customer or the two reports that matter, ask — and see exactly which documents the answer comes from.
- Built automatically for every database
- Answers read all of your focus, not a sample
- Every sentence checked against its sources
Meeting transcription
Every meeting transcribed and summarised, without leaving your building.
Upload a recording or record straight from your desk: Butler transcribes, separates the voices, names the speakers and writes minutes ready to share.
- English, German, French and nearly 100 other languages
- Who said what: every speaker recognised and named
- Decisions and action items extracted, Word or PDF export in one click
- Whisper large-v3 on our GPUs or yours, never in a cloud
Word · Excel · PowerPoint
Your Office files, edited in place.
Attach a document, a workbook or a slide deck and ask in plain words. Butler hands back the real file — every font, colour, layout and slide master exactly where it was. No copy-pasting text back into PowerPoint.
Word
Proofread, translate, rewrite a section, extend tables, leave review comments — new text takes the look of the text around it.
Excel
Real formulas instead of pasted numbers, totals, native charts, formatting — existing charts and shapes are always kept.
PowerPoint
Correct or translate every slide and speaker note, add slides from your own layouts, reorder, edit tables — or build a new deck with native charts, timelines and key numbers.
Formatting is sacred
Corrections are written word by word into the runs that held the old text: a fixed word stays bold, red, 28 pt.
Every change listed
The answer shows each correction as old → new, and nothing touches numbers, units, formulas or links.
Create from scratch — or from your template
“Make a 10-slide deck about…” builds a native file. Attach your corporate deck and the new one is built in its design. A PDF can become an editable Word, Excel or PowerPoint file.
Your original stays untouched
Each result is a new copy; follow-ups build on the latest version.
Microsoft, Word, Excel and PowerPoint are trademarks of the Microsoft group of companies. Butler is independent and not affiliated with Microsoft.
Capabilities
One secure workspace. Every AI capability your team needs.
Your hardware, your model
A local GPU server runs open large language models with continuous batching — dozens of parallel users, zero external calls.
Air-gapped by default
Butler runs inside your network. Reachable from any browser on it, invisible from the outside.
Built for teams
Accounts, roles, two-factor authentication, shared folders and usage analytics — enterprise plumbing included.
Knowledge that compounds
Transcripts, documents and notes become a private, searchable knowledge base your AI can actually use.
How it works
Running in three steps
It arrives ready
A compact GPU appliance, preconfigured. Plug it into your network and it is running the same afternoon.
Your team opens a browser
Butler opens in a browser, in the building or from anywhere over its own VPN. Documents, knowledge bases and meeting reports are shared inside the team.
Work flows in, nothing flows out
Meetings, documents and chats are processed on the Butler itself. Your existing tools can use it where they are, through its API.
Where your data goes
Three formulas, one difference: the road your data takes.
Who it’s for
For organizations where confidentiality is not a feature request.
Research institutions
Protect unpublished results and grant-sensitive data while giving every group modern AI tooling.
Medical & legal practices
Patient records and case files processed under confidentiality obligations — on premises, provably.
Finance & public sector
Regulatory filings and citizen data handled inside your perimeter, with audit logging built in.
Frequently asked questions
Is Butler GDPR-compliant?
Butler is built for the GDPR: no training on your data, no US cloud, and with the complete version not a byte leaves your building. Whether your processing complies is yours to establish — Butler makes that assessment easy.
Does Butler work without the internet?
The complete version does: a GPU server in your building that keeps working offline. The subscription and the portable version run the heavy AI in Vienna, on TU Wien GPUs.
How is it different from ChatGPT or Copilot?
Your documents and recordings do not go to a US provider and train no model. And you get tools a chat alone does not have: meeting transcription with speakers, the Database Explorer, Word, Excel and PowerPoint files kept in their original format.
What does Butler cost?
The subscription is by invitation and billed by usage. The portable version costs from €5,000, the complete version from €25,000 — with no usage fees. Details on the pricing page.
For how many people?
The complete version is sized for up to 50 people; larger institutions get their own installation on request.
Who is behind Butler?
Butler is developed at TU Wien’s Institute of Applied Physics (IAP), where it is used every day in research.
Ready to keep your data yours?
Butler Suite is rolling out through 2026. Join the waitlist or book a personal demo — we’ll show you the real system, live.