LLM Gateway covers the same ground — one API, many providers — and adds routing policies, cost ceilings and per-customer attribution for teams running real traffic.
OpenRouter proved that developers want one key for many models. The harder problem starts after the prototype: policies per environment, spend that has to be attributed, and traffic that must survive a provider incident without an engineer on call.
LLM Gateway is built for that second stage. It keeps the unified, OpenAI-compatible surface and adds the controls a production team is usually asked for during a security or finance review.
Switching gateways should be a base-URL change, not a migration project.
Policies live in the gateway rather than in each client, so they apply to every service and every environment at once.
Create a key, point one non-critical service at the gateway, compare the recorded costs against your last provider invoice, then move the remaining services and delete the direct vendor keys from your environment.
Short answers about the gateway, the providers and how billing works.
For OpenAI-compatible traffic, yes: change the base URL and the key, then keep the same request bodies and SDKs.
You can route part of your traffic through LLM Gateway and keep another gateway for a specific model. Cost records stay comparable because every request is priced the same way.
Yes. Provider credentials can be supplied per project, and managed access is available when you would rather not hold every vendor account yourself.
Catalog prices are updated as vendors change them, and routing policies that use a price ceiling automatically move traffic to models that still fit the ceiling.
Sign in with Google, open the playground and price a request against the whole catalog before you change a line of production code.
