intelligence is what allows one to understand phrases and then construct meaning from it. e.g. the paper is yellow. AI will need to have a concept of paper and yellow. and the to be verb. LLMs just mash samples and form a basic map of what can be throw in one bucket or another with no concept of anything or understanding.
basically, AI is someone capable of minimal criticism. LLMs are someone who just sit in front of the tv and have knee jerk reactions without an ounce of analytical though. qed.
That's one, out of many, definitions of "intelligence". But there's no particular reason to insist that that is the definition of intelligence in any universal, objective sense. Especially in terms of talking about "artificial intelligence" where plenty of people involved in the field will allow that the goal is not necessarily to exactly replicate human intelligence, but rather simply to achieve behavior that matches "intelligent behavior" regardless of the mechanism behind it.