Create Model Response gpt-5 with Thinking Enabled

POST https://www.kkiai.com/v1/responses

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

Request Parameters

Authorization

Add the Authorization parameter in the Header, with its value being the Token concatenated after Bearer

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

Header Parameters

Parameter Name	Type	Required	Description	Example
Content-Type	string	Required		application/json
Accept	string	Required		application/json
Authorization	string	Optional		Bearer {{YOUR_API_KEY}}

Body Parameters (application/json)

Parameter Name	Type	Required	Description
model	string	Optional	The ID of the model to use. For detailed information on which models can be used with the Chat API, refer to the model endpoint compatibility table.
input	array[object]	Optional	Text and images for the model to generate a response.
└ role	string	Required
└ content	array[object]	Required
tools	array[string]	Optional	A set of tools that the model can call. Currently, only functions are supported as tools. Use this feature to provide a list of functions for which the model can generate JSON inputs.
text	object	Optional	Configuration options for the model's text response. Can be plain text or structured JSON data.
└ format	object	Optional	Specifies the format that the model must output.
└ verbosity	string	Optional	Limits the verbosity of the model's response. Lower values produce more concise responses, while higher values produce more detailed responses. Currently supported values are low, medium, and high. Default is medium
reasoning	object	Optional
└ effort	string	Optional	Currently supported values are minimal, low, medium, and high. Reducing reasoning effort can speed up responses and reduce tokens used for reasoning in the response. Default is medium
└ summary	string	Optional	A summary of the reasoning performed by the model. This is useful for debugging and understanding the model's reasoning process. One of auto, concise, or detailed.
stream	boolean	Optional	Default is false. If set, partial message increments will be sent like in ChatGPT. Tokens will be sent as server-sent events in data-only format, which terminate the stream with a data: [DONE] message when available. Python code example.
store	boolean	Optional	Whether to store the generated model response for later retrieval via API. Default is true

Request Example

{
    "model": "gpt-5-2025-08-07",
    "input": [
        {
            "role": "user",
            "content": [
                {
                    "type": "input_text",
                    "text": "1+2+3+4+5....9985"
                }
            ]
        }
    ],
    "tools": [],
    "text": {
        "format": {
            "type": "text"
        },
        "verbosity": "medium"
    },
    "reasoning": {
        "effort": "medium",
        "summary": "auto"
    },
    "stream": true,
    "store": true
}

cURL Example

curl --location --request POST 'https://www.kkiai.com/v1/responses' \
--header 'Accept: application/json' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data-raw '{
    "model": "gpt-5-2025-08-07",
    "input": [
        {
            "role": "user",
            "content": [
                {
                    "type": "input_text",
                    "text": "1+2+3+4+5....9985"
                }
            ]
        }
    ],
    "tools": [],
    "text": {
        "format": {
            "type": "text"
        },
        "verbosity": "medium"
    },
    "reasoning": {
        "effort": "medium",
        "summary": "auto"
    },
    "stream": true,
    "store": true
}'

Response

🟢 200 OK

Response Body

Parameter Name	Type	Required	Description
id	string	Required
object	string	Required
created	integer	Required
choices	array[object]	Required
└ index	integer	Optional
└ message	object	Optional
└ finish_reason	string	Optional
usage	object	Required
└ prompt_tokens	integer	Required
└ completion_tokens	integer	Required
└ total_tokens	integer	Required

Response 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
    }
}