I use the API now, but I have to maintain my own "Chat" instance. I'd love to be able to just pay $20, but also keep my history. Right now I'm spending less tha

I use the API now, but I have to maintain my own "Chat" instance. I'd love to be able to just pay $20, but also keep my history. Right now I'm spending less than $10 a month on GPT-4 API costs, so maybe I don't need to upgrade.