Take a look at the reputation of an AI vendor. Does the company get good reviews and does their product receive positive reviews?
Lexis+ has made it's artificial intelligence tool available to law schools. Review their FAQ document for a brief introduction and overview.
The real secret to the effective use of AI is the prompt; asking an appropriately detailed question. It's like engaging in a conversation. See the prompting guide.
There are two short videos, less than two minutes, you might find helpful.