Platform API ReferenceORGS - PLATFORM - ROUTERORGS - PLATFORM - ROUTEROrg LLM router: model catalogue, native SSE invoke, and chat completions. POSTChat completionsPOSTInvoke org LLM router (native SSE)GETList org LLM router modelsGETGet one org LLM router modelPOSTResponses (OpenAI Responses-compatible)