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On-premise LLM models

Your models, your infrastructure,
your data

Run open language models in your own server room or private cloud: confidentiality, predictable costs, controlled latency and independence from API providers.

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Why host the model instead of consuming an API

On-premise LLM: confidentiality, sovereignty, predictable costs and independence, in a sovereign private cloud
Four reasons to keep the model on your side: confidentiality, sovereignty, predictable costs, independence.

Confidentiality

The requests and documents being processed never leave your infrastructure. That point alone often decides the matter.

Sovereignty

You know where the data is, who can reach it and under which jurisdiction it is processed — and you can demonstrate it.

Predictable costs

An amortised infrastructure investment rather than a variable expense that follows usage. Consumption no longer depends on someone else's price list.

Latency and continuity

Immediate answers on the local network, and a service that is not interrupted by an international outage or by a change of terms at a provider.

Independence

Changing model becomes an internal technical decision again: you are no longer bound to a third party's commercial or retention policy.

Lifecycle control

You decide when to update, when to freeze a version and how long usage logs are kept.

How we deploy a model on site

Size the platform

Volumes, nature of the tasks, number of users, power, cooling and floor-space constraints.

Choose the open models

Model families, sizes, licences, languages covered and quality measured on your own documents.

Prepare the hardware

Dedicated servers and accelerators, memory, storage, power redundancy, hardware monitoring.

Containerise

Reproducible deployment, controlled updates, separate test and production environments.

Quantise and optimise

Lower weight and cache precision so that the model fits the available memory and answers faster.

Open an internal gateway

A single entry point for applications: authentication, quotas, filtering, model selection according to how sensitive the request is.

Log and test

A log of requests and responses, quality measurement, regression tests on every model change.

On site or through an API: what actually changes

CriterionOn sitePublic API
ConfidentialityData does not leave the companyData is sent to a third party under a contract
CostHardware investment, then operations and power costsVariable expense that follows usage, with no initial investment
LatencyAnswers on the local network, independent of international bandwidthDepends on the quality of the international connection
Skills requiredOperations, monitoring and updates must be covered internallyLocal effort limited to application integration
EvolutionModel changes are your decisionDepends on the provider's versions and terms
Connectivity outageThe service keeps runningThe service becomes unavailable

Both approaches can coexist: sensitive processing on site, non-sensitive tasks through an API.

When a public API remains the better choice

  • When volumes are low and irregular: a dedicated server is not justified yet.
  • When the data processed is not sensitive and may leave the company under a contractual framework.
  • When you need the best available model immediately, with no lead time.
  • When you have neither a server room nor operations staff to dedicate to the subject.
  • As an interim solution while an in-house deployment is being prepared.
In both cases the same rule applies: whatever leaves the company is filtered, logged and decided by a written policy — never case by case, never out of habit.

Decide on facts, not on fashion

We examine your data, your infrastructure and your operational constraints, then write a reasoned recommendation — including when it is to deploy nothing on site at all.

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