At some point your AI bill stops being a rounding error and someone asks the obvious question: who spent what, on which model, doing what? Answering it means putting something between your developers and the providers — or putting something next to the providers. There are three common shapes, ...
Source: [Dev.to](https://dev.to/brianmello/proxy-gateway-or-poll-the-usage-api-picking-an-architecture-for-ai-cost-visibility-2em6)