Hi. I d like to try some LLM provider on the likes of OpenRouter. I d use it mostly for teaching (physics): double check assignements I give to students for consistency, clarifications on how to present concepts and so on... Most likely, I _wouldn t_ use it for coding.I m not really familiar with the usage of API, so I d need the service to be readily usable i.e., to provide an internal chatbot and, obviously, to be reliable. I find OpenRouter price a bit confusing (maybe it s just me not being familiar with it), apart from some odd fees they charge when you top up?Soma part from OpenRouter, what are you people using and what s your opinion of it?Thanks a lot in advance!