OpenRouter lays out why production AI apps need an LLM gateway

OpenRouter has published a guide explaining LLM gateways as the missing layer between applications and model providers.

The core argument is operational: without a gateway, provider outages become user-facing failures, routing logic stays brittle, and AI spend remains hard to see. Gateways add controls for fallback, compliance, observability, and model choice.

That framing is increasingly relevant as companies move from single-provider prototypes to production systems that need reliability across multiple models.