Chat Completions FormatChatGPT APIChatGPT Chat
Create Model Response
Header Parameters
Content-Type*string
Accept*string
Authorization?string
Request Body
application/json
model?string
The ID of the model to use. For details on which models are compatible with the Chat API, please refer to the model endpoint compatibility table.
input?
Response Body
application/json
curl -X POST "https://loading/v1/responses" \ -H "Content-Type: string" \ -H "Accept: string" \ -H "Content-Type: application/json" \ -d '{ "model": "gpt-5.1", "input": [ { "role": "user", "content": "Write a one-sentence bedtime story about a unicorn." } ] }'{
"id": "chatcmpl-123",
"object": "chat.completion",
"created": 1677652288,
"choices": [
{
"index": 0,
"message": {
"role": "assistant",
"content": "\n\nHello there, how may I assist you today?"
},
"finish_reason": "stop"
}
],
"usage": {
"prompt_tokens": 9,
"completion_tokens": 12,
"total_tokens": 21
}
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