Otter & Stein
Your own AI operating system

AI becomes your own.

Many tools, one system: every model and every piece of software you pay for runs under one roof — costs always in view. Every role gets a small assistant. And anything that goes out waits for your approval.

The situation

Many AI tools that don't talk to each other. Knowledge is scattered across inboxes, chats and heads, and recurring office work ties up capacity.

The result

Your own system with a hub and an assistant for every role, connected to your tools — email, calendar, accounting, CAD. Costs per model in view, approval before anything is sent, with local models if you wish.

Getting started

Audit (5 days) → build in weekly steps (4–8 weeks) → embed: training and operation.

IncludedOn-site auditHub with cost overviewAssistant for every roleConnection to your toolsApproval rulesLocal models if wantedTrainingOperation

The AI prepares. A human approves.

That is how we build it for you from the start. In our office, emails are created only as drafts and go out only after a click — direct sending has been technically blocked since the end of September.

How an AI assistant works for us — and for you

InputMail · WhatsApp · form AI processesreads the file · drafts a reply A human approvesone click · or a correction OutputReply · quote · appointment Data paths stay in-house if you want: local models, your own server, no obligation to use the cloud.

What runs here every day.

We don't sell anything we don't use ourselves. Three examples from the daily work of the Bergwind planning office.

AI assistant in the office

Sturmbrecher

Desktop hub for a planning office: project sessions with AI, WhatsApp connection with sender approval, leads, time tracking, archiving. Runs every day.

Company memory

Knowledge graph for the team

Decisions, solutions and facts as a linked store that every AI assistant in the team queries — hosted locally, with age checks.

Automation

Approval workflows

Social posts, quotes, emails: AI prepares, a human approves.

Secure from the ground up.

Your data stays where you want it.

Local models

Where client data must not leave the building, the models run on your server or your computer. No obligation to use the cloud.

Data processing agreement

As soon as a third party processes personal data on your behalf, an agreement under Art. 28 GDPR is required. We tell you when it is needed and plan it in from the start.

Approval before sending

Emails, quotes and posts are created as drafts; they only go out once a human approves. In our office, direct email sending has been technically blocked since September.

How we work.

Three phases — you see every step before it is built.

Audit

5 days

We look at how work really runs at your company — before anything is built.

Build

4–8 weeks

Your system in weekly steps. You see every step beforehand and can stop it.

Embed

ongoing

We train your people: easy to learn, enjoyable to use. Then we step back and stay within reach.

Which process should run first?

daniel@otterstein.ai
+49 8362 880 93 90
Otter & Stein AI GbR · Drehergasse 40 · 87629 Füssen · Germany

Write to us

For a first conversation, this is enough:

  • Which work repeats every week and takes the most time?
  • Which tools do you use today (email, calendar, accounting, CAD)?
  • May data go to the cloud — or must it stay in-house?