Private AI knowledge assistants

RAG Chatbot and Custom AI Assistants

A private AI assistant that answers from your own documents, policies and data, shows its sources and stays inside your access rules.

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What is a RAG chatbot?

RAG stands for retrieval-augmented generation. Instead of relying only on what a general AI model remembers, a RAG chatbot first searches your own documents for the passages that answer the question, then writes the answer from them. This makes the answers specific to your business, lets the assistant cite where each answer came from and makes it easier to keep information up to date: change the document and the assistant follows.

Staff knowledge assistant

Employees ask questions about SOPs, policies and product manuals and get an answer with the source.

Support copilot

Suggests replies for support agents from past tickets and documentation.

Smart document search

Find the right clause, price or procedure across thousands of files.

Access control

People only see answers drawn from documents their role allows.

Source citations

Every answer links back to the document and passage it came from.

Actions

Optionally look up an order, create a ticket or update a record.

RAG vs fine-tuning

RAGFine-tuning
Good forAnswering from changing documentsChanging a model's style or specialised behaviour
Updating knowledgeUpdate the documentsRetrain the model
Citing sourcesYesNot by itself
Cost and effortLower to startHigher, needs good training data
Typical business useMost knowledge assistantsSpecialised classification or tone, once RAG is not enough

For most business assistants, RAG is the right start. We recommend fine-tuning only when RAG with good prompts does not meet the quality you need.

How we build it

Step 1. Collect and clean content

Documents, wikis, tickets and PDFs. Remove outdated and duplicate material.

Step 2. Index it

Split content into passages and store them for fast, accurate search.

Step 3. Build the assistant

Connect the model with instructions, guardrails and access control.

Step 4. Evaluate

Test with real questions, check answers against the source and track where it fails.

Step 5. Launch and maintain

Re-index when documents change and review unanswered questions regularly.

Accuracy and safety

  • The assistant is told to answer only from retrieved content and to say when it does not know.
  • Sources are shown so users can verify answers.
  • Access rules limit what each person can retrieve.
  • We can use private or self-hosted models when data cannot leave your environment, and we configure the set-up so your data is not used to train public models.
  • We test on your real questions before launch and keep a list of questions the assistant fails to answer.

Enterprise AI assistant: what changes at larger scale

For a larger organisation, an enterprise AI assistant needs more than a good chatbot. It needs single sign-on and role-based access so people only retrieve documents they may see, audit logs of who asked what, data residency choices, a process for keeping content up to date across teams and a way to measure answer quality. We design these into the project from the start and can deploy with private or self-hosted models when policy requires it.

Frequently asked questions

What is the difference between a RAG chatbot and ChatGPT?

ChatGPT answers from its general training. A RAG chatbot searches your own documents first and answers from them, with sources. It is built to know your business.

Can it hallucinate?

Any AI can be wrong. RAG with source citations, strict instructions and testing reduces the risk a lot, and users can check the cited source.

Which file types can it use?

PDF, Word, Excel, web pages, Google Drive and Notion content, help-centre articles and more.

Is my data used to train public models?

No. We configure the set-up so your data is not used to train public models, and can use private models where required.

How do you keep it up to date?

The index is rebuilt when documents change, on a schedule or when files are updated.

How much does it cost?

Cost depends on the amount of content, integrations, users and hosting. We scope it after a free audit.

Related pages

Browse: AI Automation · Free automation audit · Pricing · How we work · AI FAQ

Build an assistant that knows your business

Book a free audit. We will review your documents and show what an assistant could answer.

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