Welcome to the forum.
Yes, the costs do add up quickly, especially with GPT-4-Vision… I’m not even sure the rate-limit is high-enough for what you describe right now, though that will change in the future.
Here’s the game I’ve been tinkering with. It’s been on hold while I think through some things - mainly cost…
You can see my progress this summer in this thread where I documented my journey…
Hope you stick around. We’ve got a great community with a lot of talented people.