Which method is right for you?

Best for non-technical teams who need a focused, persona-driven assistant without writing any code.

When you want to constrain behavior and personality in ChatGPT.

Inject your own documents as live context. The model cites your content instead of hallucinating.

When you have proprietary knowledge that must be answered accurately.

Give the model real-time access to APIs, databases, and computations via function calling.

When answers require fresh data (weather, prices, inventory).

Bake a style or domain into the model weights via training examples. Fastest inference, lowest token use.

When you need consistent tone at scale with thousands of requests/day.