C++

OpenAI (ChatGPT) Create Chat Completion

See more OpenAI ChatGPT Examples

Shows how to create a model response for a given chat conversation. C++

#include <CkHttp.h>
#include <CkJsonObject.h>
#include <CkHttpResponse.h>
#include <CkStringBuilder.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  This example assumes the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    CkHttp http;

    //  Implements the following CURL command:

    //  curl https://api.openai.com/v1/chat/completions \
    //    -H "Content-Type: application/json" \
    //    -H "Authorization: Bearer $OPENAI_API_KEY" \
    //    -d '{
    //      "model": "gpt-3.5-turbo",
    //      "messages": [{"role": "user", "content": "Hello!"}]
    //    }'

    //  Use the following online tool to generate HTTP code from a CURL command
    //  Convert a cURL Command to HTTP Source Code

    //  Use this online tool to generate code from sample JSON:
    //  Generate Code to Create JSON

    //  The following JSON is sent in the request body.

    //  {
    //    "model": "gpt-3.5-turbo",
    //    "messages": [
    //      {
    //        "role": "user",
    //        "content": "Hello!"
    //      }
    //    ]
    //  }

    CkJsonObject json;
    json.UpdateString("model","gpt-3.5-turbo");
    json.UpdateString("messages[0].role","user");
    json.UpdateString("messages[0].content","Hello!");

    //  Adds the "Authorization: Bearer $OPENAI_API_KEY" header.
    //  This is NOT a real key.  Change the "sk-vi...." to your own key.
    http.put_AuthToken("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");
    http.SetRequestHeader("Content-Type","application/json");

    CkHttpResponse resp;
    success = http.HttpJson("POST","https://api.openai.com/v1/chat/completions",json,"application/json",resp);
    if (success == false) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    CkStringBuilder sbResponseBody;
    resp.GetBodySb(sbResponseBody);

    CkJsonObject jResp;
    jResp.LoadSb(sbResponseBody);
    jResp.put_EmitCompact(false);

    std::cout << "Response Body:" << "\r\n";
    std::cout << jResp.emit() << "\r\n";

    int respStatusCode = resp.get_StatusCode();
    std::cout << "Response Status Code = " << respStatusCode << "\r\n";
    if (respStatusCode >= 400) {
        std::cout << "Response Header:" << "\r\n";
        std::cout << resp.header() << "\r\n";
        std::cout << "Failed." << "\r\n";
        return;
    }

    //  Sample JSON response:
    //  (Sample code for parsing the JSON response is shown below)

    //  {
    //    "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
    //    }
    //  }

    //  Sample code for parsing the JSON response...
    //  Use the following online tool to generate parsing code from sample JSON:
    //  Generate Parsing Code from JSON

    //  Chilkat functions returning "const char *" return a pointer to temporary internal memory owned and managed by Chilkat.
    //  See this example explaining how this memory should be used: const char * functions.

    int index;
    const char *Role = 0;
    const char *Content = 0;
    const char *finish_reason = 0;

    const char *id = jResp.stringOf("id");
    const char *v_object = jResp.stringOf("object");
    int created = jResp.IntOf("created");
    int Prompt_tokens = jResp.IntOf("usage.prompt_tokens");
    int Completion_tokens = jResp.IntOf("usage.completion_tokens");
    int Total_tokens = jResp.IntOf("usage.total_tokens");
    int i = 0;
    int count_i = jResp.SizeOfArray("choices");
    while (i < count_i) {
        jResp.put_I(i);
        index = jResp.IntOf("choices[i].index");
        Role = jResp.stringOf("choices[i].message.role");
        Content = jResp.stringOf("choices[i].message.content");
        finish_reason = jResp.stringOf("choices[i].finish_reason");
        i = i + 1;
    }
    }