I don't personally like LLMs for research assistance (yet?) because i can't get over the hallucinating or rather, waste too much time validating that it's not currently overcast when they tell me the sky is in fact blue.

But, especially as code gets flung over the wall faster and with less care, I do think they are getting to be pretty great at reviewing code for specific things that a linter can't easily catch and for looking for security, implementation, and architectural flaws before I have to look for them. A couple examples of what i mean: 'does the code use knex.raw with a template literal?', 'does the code do n+1 db lookups instead of something better?' 'do all the added/modified tests follow the test case template defined here?'