Grounded in your documents
A language model on its own knows neither your prices, nor your lead times, nor your terms. Shipped as is, it answers anyway: that is the main flaw of these tools, and the one that costs the most in lost customers.
So we connect the assistant to your own content and hold it there. When the answer is not in it, it says it does not know and offers to put you in touch. That sentence is worth more than an invented answer.