Create Model Response (Control Thinking Length)

POST

https://api.key4u.shop/v1/responses

https://platform.openai.com/docs/api-reference/responses/create
Some OpenAI models only support Response format, for example o3-pro, codex-mini-latest

Request

Authorization

Provide your bearer token in the

Authorization

header when making requests to protected resources.

Example:

Authorization: Bearer ********************

Header Params

Body Params application/json

Example

{
    "model": "gpt-5.1",
    "input": [
        {
            "role": "user",
            "content": "Write a one-sentence bedtime story about a unicorn."
        }
    ],
    "reasoning": {
      "effort": "high"
    }
  }

Request Code Samples

Shell

JavaScript

Java

Swift

PHP

Python

HTTP

Objective-C

Ruby

OCaml

Dart

curl --location --request POST 'https://api.key4u.shop/v1/responses' \
--header 'Accept: application/json' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data-raw '{
    "model": "gpt-5.1",
    "input": [
        {
            "role": "user",
            "content": "Write a one-sentence bedtime story about a unicorn."
        }
    ],
    "reasoning": {
      "effort": "high"
    }
  }'

Responses

🟢200OK

application/json

Body

Example

{
    "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
    }
}

Modified at 2026-03-08 05:42:12

Create Model Response (Streaming Return)

Create Web Search