Exactly. Once you have OpenWebUI set up, you will be able to add your API key through its interface, afterwhich you'll be able to add any openai model(s) you want to your web interface.
Then, whenever you use the models in this interface, it charge the credit cost to your API key. When your $5 worth of credits on said key runs out, it will not work until you add more credits to your API key
Oh, I thought the ApI would be free 😂, but anyways, I'm about to set it up. If I encounter any difficulty and be sure to ping you and Chatgpt for help.