如何使用 C# 在 GPT API 中处理会话

Question

通过使用会话，开发人员可以构建聊天应用程序，在与用户的多次交互中维护上下文，这可以带来更具吸引力和自然的对话。

问题：如何使用 c# http 与 gpt-3.5-turbo API 建立会话？

using Newtonsoft.Json;
using System.Text;

namespace MyChatGPT
{
    internal class Program
    {
        static async Task Main(string[] args)
        {
            // Set up the HttpClient
            var client = new HttpClient();
            var baseUrl = "https://api.openai.com/v1/chat/completions";

            // Set up the API key
            var apiKey = "YOUR_API_KEY";
            client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", apiKey);

            while (true)
            {
                // Prompt the user for input
                Console.Write("> ");
                var userInput = Console.ReadLine();

                // Set up the request parameters
                var parameters = new
                {
                    model = "gpt-3.5-turbo",
                    messages = new[] { new { role = "user", content = userInput }, },
                    max_tokens = 1024,
                    temperature = 0.2f,
                };

                // Send the HTTP request
                var response = await client.PostAsync(baseUrl, new StringContent(JsonConvert.SerializeObject(parameters), Encoding.UTF8, "application/json"));// new StringContent(json));

                // Read the response
                var responseContent = await response.Content.ReadAsStringAsync();

                // Extract the completed text from the response
                dynamic responseObject = JsonConvert.DeserializeObject(responseContent);
                string generatedText = responseObject.choices[0].message.content;

                // Print the generated text
                Console.WriteLine("Bot: " + generatedText);
            }
        }
    }
}

这段代码工作正常，但问题是它没有保存对话的先前上下文。你能帮我创建多个会话吗？我可以根据要求选择会话吗？提前感谢您的帮助。

Answer 1

我搜索了很多并尝试了很多方法，原因是 ChatGPT 不依赖会话也不依赖 cookie，因为答案是通过 API 处理和发送的。

为了与 ChatGPT 保持上下文关系，我没有找到比使用以下代码将之前对话的一部分发送到 API 更好的方法：

messages = new[] {
        new { role = "system", content =  "You are a helpful assistant." },
        new { role = "user", content =  "Who won the world series in 2020?" },
        new { role = "assistant", content = "The Los Angeles Dodgers won the World Series in 2020." },
        new { role = "user", content = "Where was it played?" },
    },

或者

messages = new[] { 
    new { role = "user", content =  "Who won the world series in 2020?" },
    new { role = "assistant", content = "The Los Angeles Dodgers won the World Series in 2020." },
    new { role = "user", content = "Where was it played?" },
},

注：如果您不输入系统消息，系统会默认写入“您是一个有用的助手”。

据 ChatGPT 团队介绍，当前版本并不专业支持系统消息，但他们正在努力确保系统消息对对话产生影响。

您可以通过尝试OpenAI Playground了解更多信息