Request count and dollar cost tell different stories. Here is how cost-vs-usage analytics surface the low-volume model that dominates your bill — and the cheap one you can route more traffic to.
An LLM gateway is a single endpoint that routes to every model provider while handling keys, cost, rate limits, and safety. Here is what it does, when you need one, and how to evaluate it.
Not every request needs your most expensive model. Here is a decision framework for routing LLM traffic by cost and quality — which tasks to send cheap, which to send premium, and how to prove the split works.
Randomly splitting LLM traffic gives you flaky, unrepeatable experiments. Here is how hash-based deterministic A/B testing splits traffic consistently per user, so your model comparison is actually measurable.
When a provider 5xxs or rate-limits you, your app shouldn't go down with it. Here is how fallback chains on an LLM gateway reroute to a healthy provider mid-request — without changing your code.