About Kasimir

Sovereign AI for the German mid-market.

Kasimir combines deep mid-market product expertise with a German-soil cloud stack — so companies can use AI today without losing control of their data tomorrow.

Why Kasimir exists

Most AI tools weren't built with the mid-market in mind.

Mid-market companies face a dilemma when adopting AI: the powerful models run on US servers, the GDPR-compliant alternatives are often half-baked wrappers, and the tools themselves are designed for engineering teams — not for sales, HR or executives.

Across more than 100 digital transformation projects, we've seen what happens when this gap closes properly: people become more productive, knowledge becomes usable, and sensitive data stays in-house.

Kasimir is the platform we wished existed. Multiple models in one interface. Your own documents, workflows and agents. Fully hosted in Germany. No black box.

How our hosting works

Self-hosted or frontier — your data stays in the EU.

Open-source models run directly on our GPU in a German data center. Powerful frontier models are reached via the EU region — no data path goes through the US.

🇩🇪 German data center 🇪🇺 EU region · GDPR-compliantYour teamBrowser / mobile app Kasimir Routing & auth Kasimir Routing & authOpen-source models Führende Open-Source-Modelle on our GPUFrontier models Frontier-Modelle (optional) in the EU region

🇩🇪 Open-source · self-hosted

Leading open AI models run directly on our GPUs in a German data center. No external API calls, no third-country transfer.

🇪🇺 Frontier · processed in the EU

When you need a more powerful frontier model, the request runs through the provider's EU region. Contractually secured, no training reuse.

Microsoft

Official Microsoft Partner

As a Microsoft Partner we have direct access to enterprise tools and compliance frameworks for the EU region — the foundation for our frontier model integration.

Behind Kasimir

Two houses, one product.

Kasimir is built by two established companies — one with years of mid-market product expertise, one operating its own data center for regulated cloud solutions. Only this combination makes a serious AI platform for the German mid-market possible.

Medienstürmer

Medienstürmer

Product, UX & mid-market know-how

Digital agency from the Tegernsee region. For over a decade, we've guided mid-market clients through software projects — from initial idea to production system.

  • UX that office staff and executives can equally master
  • Deep understanding of mid-market IT realities — built on actual projects
  • Full product engineering: architecture, frontend, backend, onboarding
medienstuermer.de

Viedev

Cloud infrastructure & compliance backbone

IT provider with its own data center in Germany. Specialised in cloud solutions for regulated industries where data must not leave the country.

  • Own servers in Germany — no US hyperscaler in the backend
  • Experience with BSI requirements, audit frameworks and KRITIS environments
  • Scales from pilot to enterprise without changing vendors
viedev.com

Neither of us could have built Kasimir alone. A UX agency can't run a data center. A hoster doesn't build intuitive products. Only together does an AI platform emerge that lands equally well in a German mid-market office and in a regulated enterprise environment.

What this means for you

Three promises that would not be possible without this partnership.

1

Data sovereignty without compromise

All standard models run on Viedev's EU infrastructure. No data leaves Germany unless you explicitly configure otherwise. GDPR isn't a retrofit — it's the architectural starting point.

2

Built for the mid-market

Not an engineering tool, not consumer software. Kasimir is the UX that office staff, sales people and executives master in three clicks — shaped by ten years of mid-market project experience.

3

A team that gets it

You're not dealing with anonymous support. Behind Kasimir stand two German companies with named contacts, transparent contracts and the knowledge that AI rollout is more than just a login.

Our mission

We want every mid-market company in Germany to use AI sovereignly — without having to choose between innovation and data control.

Sovereign AI doesn't mean: as good as the giants, just more expensive. Sovereign AI means: you keep control. Over your data, your models, your compliance. We deliver the platform — you bring the use cases.

Bring AI into your business — together.

Get started with Kasimir or talk to us about an individual use case.