ChatGPT/API/dotnet の変更点

• 追加された行はこの色です。
• 削除された行はこの色です。
• ChatGPT/API/dotnet へ行く。
• ChatGPT/API/dotnet の差分を削除

#author("2024-11-20T13:18:04+00:00","default:iseki","iseki")
** [[dotnet>.NET]]
- for OpenAI v2.x
- https://github.com/openai/openai-dotnet
*** Programming
**** Project の作成
<pre>
dotnet new console -o Net8 -f net8.0
cd Net8
dotnet add package OpenAI
vi Program.cs
dotnet run
</pre>

** Sample
- https://github.com/openai/openai-dotnet
*** 基本
<pre>
using OpenAI.Chat;

ChatClient client = new(model: "gpt-4o-mini", apiKey: Environment.GetEnvironmentVariable("OPENAI_API_KEY"));
//ChatClient client = new(model: "gpt-4o-mini", apiKey: "sk-........");

ChatCompletion completion = client.CompleteChat("こんにちは");
Console.WriteLine($"[ASSISTANT]: {completion.Content[0].Text}");
</pre>

*** 非同期によるチャット補完
<pre>
using static System.Console;
using System.ClientModel;   // for CollectionResult
using OpenAI;
using OpenAI.Chat;

ChatClient client = new(model: "gpt-4o-mini", apiKey: "sk-.....");

CollectionResult<StreamingChatCompletionUpdate> completionUpdates = client.CompleteChatStreaming("Hello World");
foreach (StreamingChatCompletionUpdate completionUpdate in completionUpdates) {
    if (completionUpdate.ContentUpdate.Count > 0) {
        Console.Write(completionUpdate.ContentUpdate[0].Text);
    }
}
</pre>

*** 構造化された出力によるチャット補完
 dotnet add package System.Text.Json
 dotnet list package

<pre>
using static System.Console;
using System.ClientModel;   // for CollectionResult
using OpenAI;
using OpenAI.Chat;
using System.Text.Json;

ChatClient client = new(model: "gpt-4o-mini", apiKey: "sk-....");

List<ChatMessage> messages =
[
    new UserChatMessage("How can I solve 8x + 7 = -23?"),
];

ChatCompletionOptions options = new()
{
    ResponseFormat = ChatResponseFormat.CreateJsonSchemaFormat(
        jsonSchemaFormatName: "math_reasoning",
        jsonSchema: BinaryData.FromBytes("""
            {
                "type": "object",
                "properties": {
                "steps": {
                    "type": "array",
                    "items": {
                    "type": "object",
                    "properties": {
                        "explanation": { "type": "string" },
                        "output": { "type": "string" }
                    },
                    "required": ["explanation", "output"],
                    "additionalProperties": false
                    }
                },
                "final_answer": { "type": "string" }
                },
                "required": ["steps", "final_answer"],
                "additionalProperties": false
            }
            """u8.ToArray()),
        jsonSchemaIsStrict: true)
};

ChatCompletion completion = client.CompleteChat(messages, options);

using JsonDocument structuredJson = JsonDocument.Parse(completion.Content[0].Text);

Console.WriteLine($"Final answer: {structuredJson.RootElement.GetProperty("final_answer")}");
Console.WriteLine("Reasoning steps:");

foreach (JsonElement stepElement in structuredJson.RootElement.GetProperty("steps").EnumerateArray())
{
    Console.WriteLine($"  - Explanation: {stepElement.GetProperty("explanation")}");
    Console.WriteLine($"    Output: {stepElement.GetProperty("output")}");
}
</pre>