The only place I see Al in the legal profession making sense is to do basic caselaw research, where it can cite the sources and the references upstream and downstream to those sources. The lawyer should be responsible to review the claimed caselaw citations to determine the merit of their support for the argument that the lawyer is making, and to pick the particular citations to use that are the strongest for the particular case.
Likewise the same sort of search but inverted, for one's opponent's most likely arguments or rebuttals might be performed, again with the lawyer doing the review based on the citations that the Al tool provided.
There was a television series in the 2010s called Person of Interest where the premise was that one of the main characters had managed to achieve Al, but in order to satisfy legal constraints, the Al was only allowed to spit-out a single phrase about a person, rather than any detail of any sort. It was up to the limited number of persons associated with the Al to figure out why this 'person of interest' had been referenced, whether they were the perpetrator, the victim, a witness, or someone who would suffer downstream effects. While soft science fiction, and pretty clearly taking inspiration from the older series Quantum Leap in having to figure out why they were there, the concept had some merit as to how Al should really be used. It should be treated as untrusted, it should be treated as requiring thorough review. It should be treated as another tool available, but no more trustable or authoritative than any other, and arguably a bit less trustable, a bit less authoritative.