Regarding effectiveness, LLMs are in a class of their own wrt. their capabilities for general language processing and basic few-shot reasoning.
This also invalidates the "efficiency" question, since the cost of doing those tasks without LLMs is infinity (i.e. you can pay as much as you want, a dolphin is never going to replace the LLM).
This also invalidates the "efficiency" question, since the cost of doing those tasks without LLMs is infinity (i.e. you can pay as much as you want, a dolphin is never going to replace the LLM).