Private AI in Europe
Hosted AI in Europe: sovereign LLM, open-weight, operated for you
Bunker, a European company, operates an open-weight language model for you, hosted on GPUs in Europe, with no hardware for you to manage. Your data stays in the EU, under your control.
By François-Guillaume Ribreau, CEO & CTO, Co-founder
Updated on June 15, 2026
What Bunker operates for you
- Model
- Open source of your choice, swappable
- Hosting
- GPUs in Europe, European company
- Access
- Private OpenAI-compatible API or interface
- Operations
- Updates and monitoring included
You use the model, we run the infrastructure.
See plans and pricingSovereign hosted AI, in plain terms
Sovereign hosted AI is an open-source language model (Mistral, Llama, Qwen…) that Bunker installs and operates on GPUs located in Europe, for your organisation. You reach the model through a private API or an interface, without buying or administering any hardware. Your requests and documents are hosted in Europe by a European company, are never used by us to train a model, and our subprocessors are listed in the GDPR Article 28 contract. It is built for SMBs and mid-market companies whose teams handle sensitive data (legal, healthcare, finance, insurance, industry) and want generative AI without exposing their know-how.
For the technical implementation: run an open source LLM hosted in Europe, deploy Mistral models on-premise, or fine-tuning a sovereign LLM on your data.
Your AI data should never leave the EU
Consumer AI APIs hosted in the United States process your requests outside Europe, under the Cloud Act. With private AI hosting in Europe, your documents, conversations and business data stay under your control, GDPR-compliant.
Your data, your instance
Your prompts, documents and training data stay on your instance and are never used by us to train a model. Our subprocessors are listed in the GDPR Article 28 contract.
A clear GDPR framework
No data transfers outside the EU. A GDPR Article 28 data processing agreement governs the processing, and you remain the controller.
Predictable performance
No transatlantic latency and no quota set by an API provider. The GPU is dedicated to you, so its performance depends only on your load, within its capacity.
What a managed hosted AI includes
Ready-to-use open-source model
We deploy the open-source model suited to your usage (Mistral, Llama, Qwen…) on GPUs in Europe, then operate it for you.
- Swappable model
- Private OpenAI-compatible API
- No hardware to administer
Fine-tuning on your data
We can specialise the model on your business data without it ever leaving the infrastructure hosted in Europe.
- LoRA / QLoRA specialisation
- Your data is never shared
- Model tuned to your sector
RAG on your documents
We connect the model to your internal documents for sourced answers, without sending your data to a third party.
- Indexing of your documents
- Vector database hosted in Europe
- Sourced answers
Operations and guidance
Model updates, monitoring and advice are included. You keep a single point of contact from scoping to production.
- Monitoring included
- Human support
- Reversible at any time
Which open-source model for which use
We help you pick the open-source model suited to your use case, then size it. Here are the families we operate.
| Model | Primary use | Sizes | For whom |
|---|---|---|---|
| Mistral | General assistant, writing, summarising | 7B to 8x7B | SMBs starting with internal AI |
| Llama | Reasoning, document analysis, RAG | 8B to 70B | Document-heavy teams |
| Qwen | Multilingual, code, structured tasks | 7B to 72B | Technical and international teams |
| DeepSeek | Advanced code and reasoning | 7B to 67B | Engineering and R&D |
GPU sizing depends on the chosen model and the number of users. We scope it together before any commitment.
GDPR-compliant AI for every business
Intelligent customer service
Chatbot and virtual assistant trained on your business data. Accurate answers without data leaving the EU.
Confidential document analysis
Automatic extraction, summary and analysis of documents (contracts, reports, invoices) on GDPR-compliant infrastructure.
Private code generation
AI development assistant that understands your codebase. Private copilot, your proprietary code never touches US servers.
Custom business AI
Fine-tuning models on your sector data: legal, medical, financial, industrial. All processing stays in Europe.
Sovereign hosted AI, concretely
What a sovereign, managed hosted AI changes for your organisation.
A European company
The model runs on GPUs in Europe, operated by a European company. Our subprocessors are listed in the GDPR Article 28 contract.
Data in the EU
Prompts, documents and any fine-tuning stay in Europe and are never used by us to train a model.
Reversibility
The model is open source, so you can audit what runs, switch models, and bring it back onto your own servers when the time comes.
Turnkey and guided
We run the infrastructure and you keep a human point of contact, instead of a self-service you administer alone.
Frequently asked questions
What is sovereign hosted AI? +
It is an open-source language model that Bunker hosts and operates on GPUs located in Europe, for your organisation. You reach the model through an API or interface, without managing hardware, and your data stays in the EU.
Which businesses is it for? +
For SMBs and mid-market companies whose teams handle sensitive data (legal, healthcare, finance, insurance, industry, retail). As soon as your exchanges must not leave for a third-party AI provider, AI hosted in Europe makes sense.
Where is my data hosted? +
On GPUs located in Europe, operated by a European company. Your requests and documents do not leave EU territory, and our subprocessors are listed in the GDPR Article 28 contract.
What GDPR framework applies to AI hosted in Europe? +
Hosting in Europe by a European company, with no transfer outside the EU, sets a clear framework for AI processing of personal data. Your data is never used by us to train a model, and our subprocessors are listed in the GDPR Article 28 contract. You remain the controller (legal basis, retention periods, data-subject rights), and an impact assessment may be required for sensitive data.
Which models do you offer? +
Open-source models: Mistral, Llama, Qwen, DeepSeek and their variants. We help you pick the family and size suited to your usage, then size it.
What is the difference between hosted AI and on-premise AI? +
Hosted AI runs on our GPUs in Europe, with nothing to install on your side and a fast start. On-premise AI runs on your own servers, up to an air-gapped setup cut off from the internet. In both cases the model stays open source and your data stays in the EU.
Can I retrieve the model and bring it in-house later? +
Yes. Because the model is open source, you can deploy it on your own servers whenever you want. You depend on no vendor to keep running it.
Is my data used to train other models? +
No. Your prompts, documents and fine-tuning sets are never used by us to train a model. They serve your own instance only.
How much does hosted AI in Europe cost? +
The AI Instance starts at €160 excl. VAT per month for an open-source model operated continuously. Private GPT, the ready-to-use private chat interface, is €190 excl. VAT per month. To validate AI on your own data before any subscription, a PoC is available at €5,400 excl. VAT as a one-off.
How does onboarding work? +
We first scope your use case and the right model. We deploy the instance on GPUs in Europe, connect it to your documents if needed, then you reach the model through an API or interface. A PoC on your data can precede the subscription.
What support and guidance are included? +
Operations include model updates and monitoring. You keep a human point of contact from scoping to production, and advice on model choice and sizing is included.
Deploy private AI on European infrastructure
Keep control over your data and AI models, outside US jurisdiction. Pick a plan or request a demo tailored to your use case.