Best LLM Routers in 2026: Compared by Cost, Latency & Features

In 2026, managing multiple large language model (LLM) providers has become increasingly complex and costly, necessitating the use of LLM routers to streamline operations. These routers act as intermediaries, directing requests to the most suitable model based on criteria such as cost, latency, quality, and provider availability. This approach allows teams to avoid embedding specific model logic into their applications, reducing excessive costs from using expensive models for simple tasks. LLM routers like Eden AI, LiteLLM, and Portkey offer varied features, from open-source flexibility and self-hosting options to managed services with compliance and cost optimization. The choice of an LLM router depends on the team's infrastructure preferences, cost management needs, compliance requirements, and integration with existing systems. With LLM routing, teams can achieve significant cost reductions while maintaining high-quality outputs, making it an essential component in the fragmented model landscape of 2026.