Off The Shelf Models With Strong Prompting
This path assumes you’re using a leading base model and investing in prompt design, tool calling, and workflow orchestration. You’re not changing the model. You’re improving how it’s used. Pre-trained LLMs offer the fastest route to value and the safest place to learn what your users actually need.
It’s also where many teams stop. If the system can handle the task with good prompts and clear guardrails, the rest of the stack stays simple. You avoid training costs and keep your team focused on product delivery.
Retrieval Augmented Generation Over Proprietary Data
RAG adds your data at query time. The model stays the same, but it’s grounded on your documents and records through retrieval. If your domain changes often, or if answers must cite specific policies or tickets, RAG delivers the freshness and traceability that training alone cannot.
A strong RAG system needs more than a vector database. It needs specific data contracts, chunking strategy, access controls, and evaluation. Done well, it can outperform fine-tuning for knowledge-heavy tasks while staying transparent about sources. Teams often start with RAG because it balances control with speed.

