Core Concepts

SIRAYA Model Router is an OpenAI-compatible and Anthropic-compatible API gateway. You call it with a familiar request format, and the router selects the best backend for the model you requested, handling reliability and translation for you.

These pages explain the model that everything else builds on:

Topic	What it covers
How Routing Works	Backend selection, automatic retries, failover, and model fallback.
Model Availability	How the models you can call are determined, and how to discover them.
API Formats	The three request formats the router accepts and how they relate.

One key, one balance. Every endpoint uses the same API key and draws on the same credit balance — see Authentication.