The Problem with Base LLMs
Large language models are extraordinarily capable at reasoning, writing, and synthesis. What they can't do is know things that happened after their training cutoff — and they can't know things about your specific business: your products, your processes, your clients, your history.
This is the core limitation that RAG (Retrieval-Augmented Generation) solves.
How RAG Works
At its simplest, RAG is a two-step process:
**Retrieve:** When a user asks a question, search a knowledge base (your documents, your database, your internal wiki) for relevant context
**Augment:** Inject that retrieved context into the LLM's prompt alongside the user's question
**Generate:** The LLM now answers based on both its general knowledge and your specific, current context
The result is an AI that can answer questions about your pricing, your client history, your product documentation, or your internal processes — with the general reasoning capability of GPT-4 or Claude, grounded in your actual business data.
Implementation Architecture
Our standard RAG implementation for enterprise clients:
Document Ingestion Pipeline
Query Pipeline
Evaluation & Quality
When RAG Is Right for Your Business
RAG is the right architecture when:
We've implemented RAG systems for legal firms (case research), medical groups (protocol lookups), and government departments (policy Q&A). Each had different retrieval requirements, but the fundamental architecture was the same.
Getting Started
The minimum viable RAG system can be built in a few days with the right expertise. The production-ready version — with evaluation, monitoring, and continuous improvement — takes 4-8 weeks depending on complexity.
If this sounds relevant to your business, we're happy to assess your knowledge base and propose an architecture.
Part of the Keystone Software team, building premium software for South African businesses.