Model Gateway

A model gateway is a centralized proxy service through which all LLM API calls are routed, providing a unified interface regardless of the underlying provider. The gateway handles authentication, rate limiting, cost tracking, logging, and routing logic — including fallback and load balancing across providers. By centralizing these cross-cutting concerns, a model gateway decouples application code from specific provider APIs, making it straightforward to switch models or add providers without modifying every consumer.