Passing images to LLMs in C# with Microsoft.Extensions.AI

using Microsoft.Extensions.AI;
using OpenAI;
var key = Environment.GetEnvironmentVariable("OPENAI_API_KEY");
var model = "gpt-4o-mini"; // or any other model that supports images
IChatClient chatClient =
    new OpenAIClient(key).GetChatClient(model).AsIChatClient();

var chatHistory = new List<ChatMessage>
{
    new(ChatRole.System, "You are a helpful assistant."),
};

var userMessage = new ChatMessage(ChatRole.User, "Describe the image");
var imagePath = "PATH_OF_YOUR_IMAGE"; // Replace with your image path
var imageBytes = await File.ReadAllBytesAsync(imagePath);
var mediaType = "image/jpeg"; // Adjust based on your image type
userMessage.Contents.Add(new DataContent(imageBytes, mediaType));

chatHistory.Add(userMessage);
string response = "";
await foreach (ChatResponseUpdate item in
    chatClient.GetStreamingResponseAsync(chatHistory))
{
    Console.Write(item.Text);
    response += item.Text;
}

Console.WriteLine(response);