GDPR-Compliant Custom LLM Fine-Tuning | Private AI Europe
We fine-tune the best open-source models — Llama 3.1, Qwen 2.5, Mistral Nemo — into a private LLM or self-hosted LLM built on your proprietary data. No US clouds, no data sharing: 100% EU data residency, on-premises or EU-only hosting (Frankfurt / Varna), from €3,900.
Private & Self-Hosted LLM Instead of US APIs
Replace generic GPT endpoints with a secure enterprise LLM that runs fully in Europe, tailored to your documents, tickets and workflows. Keep all prompts, logs and training data under your control with GDPR-compliant AI and EU-only hosting.
Perfect German & CEE Languages
We focus on multilingual European use cases: German legal and support, Bulgarian public sector, and cross-border European clients across finance, IT and professional services, all powered by private LLMs.
Why Generic Models Like GPT-4o Fail GDPR-Compliant European Companies
Most European organisations start their AI journey with generic public models such as GPT-4o or Gemini, but quickly discover serious limitations around GDPR-compliant AI, data residency and language quality in German and CEE languages. Every prompt and response may travel through US infrastructure and be logged outside the EU, which creates uncertainty for legal, financial and public sector teams that work with confidential information.
- 100% data sovereignty and full auditability for GDPR & the upcoming EU AI Act.
- Predictable cost structure after go-live — no runaway token bills.
- Much stronger performance in German, Bulgarian and other European languages.
- A self-hosted LLM platform on your servers or EU cloud: your infrastructure, your rules.
- Privacy – Most DACH companies we speak with have serious concerns around US-hosted AI APIs.
- Language quality – Many teams see noticeably weaker performance in German and other European languages with default models.
- Costs – Our projects typically cost a one-time fee from €3,900, often replacing ongoing SaaS API bills that can easily reach five-figure monthly costs.
What We Deliver
AI Tuning delivers end-to-end LLM fine tuning services and custom LLM development for private, GDPR-compliant AI in Europe. We handle strategy, data preparation, model selection, fine-tuning, deployment and handover. Our focus is on multilingual assistants that understand your processes, tone of voice and internal policies — not just generic chatbots.
Custom Fine-Tuning & LoRA Adapters
We fine-tune 7B–70B models on your documents, tickets and knowledge base using modern techniques such as QLoRA and instruction tuning. The result: a private LLM that speaks your language, literally and figuratively.
Private Hosted Inference (EU)
We expose your model behind an OpenAI-compatible API hosted in EU data centres (Frankfurt or Varna). Your developers can integrate without changing client code while you keep logs and traffic inside Europe with eu-only ai hosting.
On-Premise / Air-Gapped Deployment
For banks, law firms and public sector institutions we implement fully isolated installations that run on your servers or dedicated hardware, with no external network dependency — a truly self hosted LLM.
Multilingual & Domain Specialisation
We optimise for your domain — legal, support, finance, public sector — and your languages: German, English, Bulgarian and more as your use cases grow.
Real Results for European Clients
Our project portfolio focuses on high-impact, compliance-aware AI systems for European businesses that cannot compromise on privacy. Below are representative scenarios; detailed case studies are available on request under NDA.
German Legal Contract Reviewer
A German legal team uses a fine-tuned Mistral Nemo 12B model to classify clauses, highlight risk and prepare first drafts of comments — while all documents remain on EU infrastructure. Accuracy increased from ~68% to ~96% on their internal benchmark with a private legal LLM.
Multilingual Customer Support Assistant
A Qwen 2.5-based model answers routine tickets in German, English and Bulgarian for a SaaS company serving DACH & Eastern Europe. Human agents only handle complex escalations; first-response time dropped below one minute with stable CSAT above 90%.
Public Sector Document AI
For a public institution, a Llama 3.1-based assistant helps search, summarise and analyse large volumes of documents in local languages with clear access controls. All logs are retained inside national infrastructure for full auditability.
Best-in-Class Open-Source Models We Fine-Tune
We specialise in a curated set of modern open-source models that perform strongly on European use cases and can be deployed cost-effectively on your hardware or EU cloud of choice as a private LLM platform.
Mistral Nemo 12B
Excellent German and English out-of-the-box, strong on legal and analytic workloads with tight latency constraints. Ideal for lawyers, consultants and financial services.
Qwen 2.5 (14B–72B)
Stand-out multilingual reasoning and structured-data handling. Great fit for customer support, back-office assistants and workflow copilots that must interact with APIs and tools.
Llama 3.1 / 3.3 (8B–70B)
The most widely adopted family with rich ecosystem and strong instruction following. Suitable for internal chatbots, document assistants and knowledge search.
DeepSeek & Coder Models
For engineering teams we deploy code-optimised models that help generate scripts, integration glue and automation steps while keeping everything inside your infrastructure.
Your Data Stays in Europe — At Half the Price
AI Tuning is a private LLM provider in Europe based in Varna, Bulgaria, giving you the advantages of a fully EU-based partner with strong technical talent and significantly lower operating costs compared to Western capitals. Your project is delivered within the EU legal framework, with a clear understanding of GDPR and the expectations of European regulators.
Bulgaria’s cost structure allows us to invest more of your budget directly into data preparation, evaluation and support instead of overhead. We work comfortably in English and German and are one to two hours’ flight from major hubs such as Vienna, Munich and Zurich.
Secure AI Insights: European Hospital
Advanced Compliance AI Ensures Financial Integrity
GDPR Compliance Chatbot Solution
Get Your Private GDPR-Safe LLM in 10–14 Days
If you are ready to move from experimental AI chatbots to a serious, GDPR-compliant private LLM that runs fully in Europe, AI Tuning can guide you from idea to production. In a short, free 15-minute consultation we clarify your use cases, data sources and technical constraints, then send you a fixed-price proposal that covers fine-tuning, deployment and handover.