If you build on top of LLMs, you've probably hit this: you ship a feature, traffic spikes, and the API bill comes back way higher than you expected. Per-token pricing makes costs hard to predict — you're billed by how verbose the model is, not by the value you ship. I got tired of that (plus ju...
Source: [Dev.to](https://dev.to/chenxiao5580cmd/stop-guessing-your-ai-bill-one-endpoint-for-gpt-55-claude-gemini-at-a-flat-per-call-price-3m8a)