Responses API

POST /v1/responses (also served at /responses) speaks the OpenAI Responses shape.

curl https://gw.lunaroute.com/v1/responses \
  -H "LUNAROUTE-API-KEY: $LUNAROUTE_API_KEY" \
  -H "content-type: application/json" \
  -d '{
    "model": "glm-5.3",
    "input": "Say hello in one sentence."
  }'

Background model variants, project attribution, and BYOK passthrough behave the same as in Chat completions. Choose this dialect when your client already speaks it; the model catalog is shared across dialects.