r/MUN

I am aware that I should not ideally be using AI for MUNs, but still, I am looking for one which helps me well in research, and sometimes brainstorm ideas, or provide a structure for certain paperwork upon which I add my creativity. I have been using ChatGPT as my go to AI partner for MUNs. But I am looking for a better alternative as many people keep saying Gemini/Claude is better. I don't know which one to go for. So pls suggest me a good AI that will help me in MUNs.

NOTE: I WILL NOT BE ABLE TO BUY ANY AI SUBSCRIPTION (PARENTS WON'T ALLOW) SO SUGGEST ME SOMETHING THAT WORKS GOOD IN ITS FREE VERSION :-)