openai/openai-dotnet

using NUnit.Framework;
using OpenAI.Responses;
using System;
using System.Threading.Tasks;

namespace OpenAI.Examples;

// This example uses experimental APIs which are subject to change. To use experimental APIs,
// please acknowledge their experimental status by suppressing the corresponding warning.
#pragma warning disable OPENAI001

public partial class ResponseExamples
{
    [Test]
    public async Task Example01_SimpleResponseAsync()
    {
        ResponsesClient client = new(apiKey: Environment.GetEnvironmentVariable("OPENAI_API_KEY"));

        ResponseResult response = await client.CreateResponseAsync("gpt-5", "Say 'this is a test.'");

        Console.WriteLine($"[ASSISTANT]: {response.GetOutputText()}");
    }
}

#pragma warning restore OPENAI001