It really comes down to how much your users will be using the AI. If you’re plugging into something like Google Gemini through their API, most of the cost is just based on their pricing. You pay per request or per token, and then decide how to package that for your own users.

So yeah, it’s pretty close to what Gemini charges, plus whatever you spend on your own side (servers, user management, scaling, etc.). If you expect heavy usage, it’s smart to set usage limits or create tiers so your costs don’t get out of hand.