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Looking for a billing API for a multi model AI platform

So my team just built this aggregator platform that hooks up several neural networks in one single interface. Users can drop text prompts for ChatGPT or switch over to FLUX for generating images, plus run some code generation on the side. We are pulling all this directly from the official paid APIs under the hood. Giving all that compute power away for free is definitely going to burn through our cash in a matter of days. We gotta implement some way to charge users so we can cover the server costs and maybe turn a profit. What billing systems do you guys use to track and charge for API usage?

Setting up monetization for generative tools takes some serious planning before you even think about launching. A lot of devs get stuck on whether to offer monthly tiers or just charge per token from day one. For the actual payment processing part, Stripe handles subscriptions and metered usage pretty well. Paddle is another solid option to look into since they take care of all the global tax calculations automatically.

The whole pricing thing for generative tools is crazy because a simple text prompt costs fractions of a cent while generating an image burns way more compute. Going with a flat rate usually ends up with a few heavy users eating all your margins before you even notice. Figuring out the exact billing logic from the start saves a lot of money down the road. You can read a comparison of usage based billings here https://aibilling.dev/ . The site breaks down how different platforms handle token tracking and tier pricing. Just run through the specs there and decide what works best for your architecture.

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