Glossary · Routing & cost

LLM router

A system or model that decides, per request, which underlying LLM should handle it to optimize for cost, quality, or speed.

Related terms

• AI gateway
• BYOK (bring your own key)
• LLM gateway
• LLM unit economics
• cascading inference
• cost ceiling

Vynaris is an inference gateway that routes each request to the cheapest right-sized model and shows the receipt. Get an API key or read the docs.