Can You Run ChatGPT on Your Own Server? Private AI for UK Businesses

"We'd love to use AI, but we can't put client data into ChatGPT." We hear this most from solicitors, accountants, healthcare and HR teams. The good news is that you no longer have to choose between AI and confidentiality. You can run your own.

What "Private AI" Means

A private AI is an AI assistant that runs on hardware or a cloud environment dedicated to your business, instead of a shared public service. It's built from three parts:

• An open-weight model: an AI model whose files can be downloaded and run anywhere. Well-known families include Meta's Llama, Mistral, Google's Gemma, Qwen and OpenAI's own gpt-oss models.
• The machine it runs on: a powerful workstation or server in your office, or a private environment in a UK data centre.
• A chat interface: a familiar ChatGPT-style screen your staff sign in to with their normal work accounts.

Can It Work Without the Internet?

Yes. Once installed, a local model can run with no internet connection at all, which suits the most confidential work. You'll still want a secure, controlled way to install updates and new models.

Is It as Good as ChatGPT?

For many everyday business tasks, such as summarising documents, drafting from your templates and answering questions about your own files, modern open-weight models do a good job. The biggest public models are still stronger at the hardest reasoning tasks. That's why we always pilot on your real work before you commit, so you know what to expect.

What Can It Do?

• Answer questions from your own documents, such as contracts, procedures and case files, pointing to the source.
• Summarise and draft from your own templates and precedents.
• Transcribe and summarise meetings on your own hardware.
• Extract and redact details from invoices, forms and reports.
• Remember your business over time. Using the "LLM wiki" approach popularised by OpenAI co-founder Andrej Karpathy, the AI keeps a growing set of linked pages about your clients, projects and procedures, so its knowledge builds up instead of being forgotten after each chat.

On-Premise or Private Cloud?

	On-premise server	Private UK cloud
Where data lives	In your building	Your own isolated environment in a UK data centre
Works offline	Yes	No
Hardware to house	Yes	No
Best for	The most sensitive data, steady usage	Multiple offices, remote teams, flexible capacity

What About Security?

An AI server holds some of your most sensitive information, so it needs the same care as the rest of your IT: sign-in with multi-factor authentication, access limited by role, activity logging, patching, monitoring and backups. Check each model's licence allows business use, too.

Want Your Own Private AI?

We design, install and manage private AI for UK businesses, on-premise or in a private UK cloud, secured and looked after by our IT team. Not sure where to start? Our AI Readiness Check will tell you which tasks need to stay private.