Is Embedding use only custum knowledge base

If i am using prompt eng then openai give responce from their end with thier answer
what if i am using embedding with custum knowledge base
i want to know that if user ask any question that is similar to question in dataset ,it will print as same as answer from the custum knowledge base or it will add something extra to repsonce.

Hi Sarthak,

Your prompt can limit any response output to the embeddings in your vector store.

Here’s an example of knowledge base augmentation I’ve found quite helpful.