One integration
Applications talk to a single endpoint instead of carrying a separate client for every provider.
LLM Router sits between your applications and the model providers. You integrate once; routing, fallback, keys, limits and cost tracking are handled centrally, and swapping the underlying model stops being an application change.

Applications talk to a single endpoint instead of carrying a separate client for every provider.
Send each request to the model that suits it, and fail over automatically when a provider degrades.
Usage and cost are tracked per key, per team and per route, with budgets and rate limits.
Teams accumulate model integrations quickly: one provider for chat, another for embeddings, something open-weight self-hosted for sensitive data. Each brings its own SDK, keys and failure modes. Centralising that means an application asks for a capability and the gateway decides how to serve it.
Route by task, cost ceiling, latency target, or data sensitivity. A summarisation call can go to a cheaper model while a reasoning-heavy call goes to a stronger one, and anything touching regulated data can be pinned to a self-hosted model.
Per-key budgets and rate limits, request and response logging with redaction, and usage reporting by team. When a provider has an incident, traffic moves to the fallback instead of failing.
No. The API is OpenAI-compatible, so in most cases you change the base URL and the key.
Yes. That is a common configuration: sensitive requests go to a self-hosted open model and everything else uses hosted APIs.
The request fails over to the next model in the route. You can define the order per route.