Cost for LLM plans

We just finished a conversation about LLMs plans costs. One argued that LLMs are expensive, and as an entry level user, the best strategy is to choose the cheapest one, usually the free plan. Others thought that following the most expensive plan is the best way to keep the performance sharper. In my opinion, no matter how advances the technology is, the simplest way is to check the “need” of yourself and the team. If this falls into the specific region, that usually show plus, pro or ultra, then it is the correct time to discuss about this. Otherwise, just save yourself some time and relax.