POST https://api.opwan.ai/v1/responsesAuthorization: Bearer ********************{
"model": "gpt-5.5",
"input": "Hello!"
}curl --location '/v1/responses' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '{
"model": "gpt-5.5",
"input": "Hello!"
}'