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Private AI across group companies: shared service or separate environments
Short answer
Several companies can use one server with a local model if each manages its own users and materials with no access to the others' data. Before connecting them, decide which decisions are shared and which each company makes alone. At Syntalith an app on a local model costs from €3,000 net plus GPU hardware. At 600 questions to documents a month of 10 minutes each, it pays back in 1.2 months.
How we workDetails ↓
- 01Call30 minutes with an engineer, free
- 02PrototypeA working system on your process and data, free
- 03ImplementationTarget and fixed price in the contract; 50% at signing
- 04Acceptance50% once the agreed target is met
- model on your server or in the cloud in the EU
- quoted after the review
- same work in application with EU cloud model
- from €3,000
- task, data and equipment analysis
- €0
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Author: Syntalith · 3 min read
Statistics
Local AI in groups of companies: statistics 2026
1.2 mo.
payback of a €3,000 local app at 600 questions to documents a month: €3,490 of work today, €1,087 with checking and the GPU server. Scenario.
48.8%
According to Eurostat (2025), 48.8% of EU enterprises that considered AI and did not use it named concerns about data protection and privacy.
49%
According to the European Commission (2026), 49% of EU SMEs and mid-caps name legal uncertainty as a barrier to AI.
Source: European Commission, Flash Eurobarometer 578 (2026) ↗
52.5%
According to Eurostat (2025), 52.5% of EU enterprises that considered AI and did not use it named a lack of clarity about the legal consequences.
55.0%
According to Eurostat (2025), 55.0% of large EU enterprises with 250 or more employees used AI.
Figures checked: 22 October 2026
Company A's administrator and company B's documents
Company A wants to give its team a new collection of instructions, while company B keeps its own set. A's administrator should be able to do this with no access to B's documents, and the administrator of the shared infrastructure needs a scope of technical support that involves no reading of either company's content.
This distinction affects the choice of app. Open WebUI describes groups for managing permissions and access to resources, and the permissions from several groups add up. So the assessment has to look at the real access of a person who holds several roles, because a group name alone does not say what its administrator can do.
- Sharing your own material with the team
- Changing the audience and withdrawing material
- Checking the access of a person in two groups
- Who sees the support records and backups of several companies
What it costs and when it pays back
- Today
- 600 questions to documents × 10 min = 100.0 h (€3,490)
- With the app, an employee checks the output in 25% of the time
- €873
- Hetzner GEX45 GPU server
- €214
- Saving
- €2,403 a month
Payback of €3,000
1.2 months
The volume, the time and the checking share are the scenario's assumptions, which we measure in the trial. €34.90 an hour is the EU average hourly labour cost for 2025 according to Eurostat. Price of the GEX45 server with 24 GB of GPU memory from Hetzner's page on 22 October 2026, without the one-off €209 fee.
The count covers the time spent searching, reading and compiling material. What remains is the time to check the result against the source, 25% of today's work in the scenario. We measure both times in a trial on 20 to 100 cases the team has already handled.
The limits of administration and upkeep
The company agrees the owners of the data and of decisions on changes in each subsidiary. The contractor describes the limits of support, including service access to materials. The trial results show which elements can be shared and how to split the cost of upkeep between the companies.
- Where the app takes documents from and where it saves results
- What stays in logs, backups and the history of questions
- Who has access to questions, answers and outputs
- Who updates the model, the app and the document set
A shared installation or separate environments
The companies may need different update dates or different features, and a change that helps one need not be urgent for the others. A shared app needs agreement on how such decisions are made. Separate environments can use the same model server, but computing power and the priority of tasks have to be agreed. If each company already has an approved tool, a joint order may cover a shared standard for assessment and support, without replacing any app.
Similar needs, clear permission groups
a shared app with groups
from €3,000
Different change dates and administrators
separate environments on a shared server
from €3,000
The companies have approved tools
a shared assessment standard and support
priced after a call
Where to start
The first scope covers two teams and their real administrative tasks. Representatives of the companies judge the access and ease of use, and central IT judges the way the service is maintained. We deploy local models as part of private LLMs, and we build the view for working with sources as an AI app. For the free analysis, a description of one case and of where the materials sit is enough. Confidential files stay in the company, and you get a written plan within 2 working days.
Worked example · Scenario
How we count the payback: a shared local model
We run the same count for your group in the free analysis.
€4,188
a month for the work on 600 questions
EU cloud version payback: 0.8 mo.
Our assumptions are 12 minutes to find an answer in the documentation, and checking in 15% of the old time. €34.90 an hour is the EU average hourly labour cost for 2025 according to Eurostat, for companies with 10 or more employees. Model cost: Claude Sonnet 5.5, about 6,000 + 500 tokens per answer in the EU cloud version, at the ECB rate of 1.1205 USD per euro on 22 October 2026. We count the payback for an app with a model in the EU cloud (from €3,000 net). We price the model on your server after a call, and the cost of people's work stays the same.
See the full calculation →
