An LLM Router (Large Language Model Router) is a system that automatically directs incoming queries to the most appropriate language model.
Similar to a traffic control system, the router determines which of the available AI models can solve a specific task most efficiently. This selection is based on various criteria such as the type of query, required expertise, costs, or processing speed.
For example, a simple text correction might be directed to a smaller, faster model, while a complex analysis would be routed to a more powerful but potentially slower model.
LLM Routers are particularly important in enterprise environments where multiple AI models operate in parallel and resources need to be used optimally. They help reduce costs and improve response quality by ensuring that each query is handled by the most suitable model.
An LLM Router can be thought of as an intelligent telephone operator who forwards incoming calls not randomly but purposefully to the appropriate experts.