Case Study Leukeleu

From black box
to full control

How Leukeleu deployed sovereign AI with SureGPT on Nebul’s NVIDIA-powered NeoCloud and eliminated every data privacy risk their clients feared.

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100
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Client trust, zero black-box concerns
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Performance gains in Django applications
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Tailored AI, built from your own IP
The challenge

The problem
with Big Tech AI

01

Data sovereignty gaps

No clarity on where data physically lived, how it was governed, or whether it fed into third-party training pipelines.

02

Proprietary lock-in

Hyperscalers optimize their stacks for dependency. The deeper you go, the harder — and costlier — it is to leave.

03

IP exposure risk

Strategies, financial models, client records, the possibility of sensitive data leaking into public models was a deal-breaker.

The solution

Sovereign AI on NeoCloud

By partnering with Nebul, Leukeleu gained access to NVIDIA-powered NeoCloud infrastructure, entirely European, entirely private. No data ever leaves the client's environment.

Nebul’s sovereign stack

The result is SureGPT: Leukeleu’s private AI platform built on Nebul’s sovereign stack. Nebul handles the GPU muscle. Leukeleu handles the intelligence layer, UI, data preparation, and seamless business integration.

  • Mistral-based LLMs, rapidly iterated on Nebul’s GPU infrastructure
  • Python & Django applications running natively without friction
  • Open, API-compatible architecture, no forced dependencies
  • GDPR, EU AI Act, NIS2 compliant by design

“Nebul provides the infrastructure, we ensure it delivers value. This keeps AI reliable, manageable, and usable.”

Dennis Bunskoek
Co-owner, Leukeleu
The results

What changed

01

Black-box fears
eliminated

Clients can now adopt AI knowing their data never leaves their environment, and never trains someone else’s model.

02

Performance
gains

Significant latency and reliability improvements for data-heavy Django workloads, delivered on NVIDIA-accelerated NeoCloud infrastructure.

03

Tailored to
the business

Every AI solution is trained on and scoped to the client’s own IP, delivering contextually relevant results from day one.

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Read the full story

Get the complete case study, including technical implementation details, client impact, and how Nebul’s NeoCloud unlocked a new category of sovereign AI for European enterprises.

About Leukeleu

Two decades of
purposeful software

AI with a purpose

Based in Utrecht, Leukeleu is a team of 20 specialists with nearly two decades of experience building sustainable, high-quality digital products under the philosophy of “AI with a Purpose.” Nearly 15 years before data residency became an industry talking point, Leukeleu built a fully sovereign e-health platform for Dutch mental healthcare, entirely without American or non-European infrastructure.

Sovereign e-health platform

That early sovereign e-health platform eventually scaled to serve healthcare organizations and patients across the Netherlands, proof that European-first AI was not just possible, but preferable.

70+ healthcare organizations served on their sovereign e-health platform, reaching over 60,000 patients across the Netherlands.

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without the risks

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