LLM gateway: overview, benefits, and top platforms
Blog post from Merge
The text discusses the role and benefits of using Large Language Model (LLM) gateways in the development of AI applications to manage costs, optimize routing, and improve reliability. LLM gateways, such as Merge Gateway, LiteLLM, and OpenRouter, provide centralized platforms for routing requests to the most suitable models based on factors like cost, speed, and reliability. These gateways offer functionalities like routing logic, usage and spend tracking, observability, and test simulators, enabling developers to avoid the complexities of building and maintaining provider-specific integrations and to manage spend policies effectively. While LiteLLM is a self-hosted, OpenAI-compatible proxy offering maximum control and customizability, OpenRouter provides a managed, multi-model gateway service with a single API across models and providers. Merge Gateway offers a centralized control plane for production AI systems, facilitating model access and request governance. The text emphasizes the importance of LLM gateways for projects requiring production reliability, multi-provider support, and stringent spend management, cautioning that the choice to use such platforms should be carefully evaluated against their costs.