Integrate ChatGPT In .Net Core

What is ChatGPT

ChatGPT is an extensive language model developed by OpenAI, designed to respond to natural language input and generate human-like text in response. ChatGPT has been trained on a massive dataset of text from the internet, including books, articles, and websites, using transformer-based language modeling.

ChatGPT is used for various applications, such as answering questions, generating text, completing sentences, summarizing text, and much more.

Integrating ChatGPT in .NET Core

Step 1. Define a chat interface.

Before integrating the ChatGPT model into your .NET Core application, you'll need to define a chat interface for users to interact with. This could be a web interface, chatbot interface, or another type of interface.

Step 2. Create a server endpoint.

You'll need to create a server endpoint for your chat interface to communicate with your .NET Core application. This endpoint should accept user input and return responses from the ChatGPT model.

public async Task<IActionResult> SendMessage([FromBody] ChatInput input)
    var response = await ChatGPT.GetResponse(input.Text);
    return Ok(new ChatOutput { Text = response });

Step 3. Initialize the ChatGPT model

You'll need to initialize the ChatGPT model in your .NET Core application and create a method that accepts user input and returns a response from the model.

using Microsoft.ML;

public class ChatGPT
    private readonly MLContext _mlContext;
    private readonly ITransformer _transformer;

    public ChatGPT(string modelPath)
        _mlContext = new MLContext();
        _transformer = _mlContext.Model.Load(modelPath, out var schema);

    public async Task<string> GetResponse(string inputText)
        var inputIds = TokenizeInput(inputText);
        var inputData = new InputData { InputIds = inputIds.ToList() };
        var predictionEngine = _mlContext.Model.CreatePredictionEngine<InputData, OutputData>(_transformer);
        var outputData = predictionEngine.Predict(inputData);
        var outputIds = outputData.OutputIds;
        var outputText = ConvertOutputIdsToText(outputIds);
        return outputText;

    private int[] TokenizeInput(string inputText)
        // Tokenize input text into a sequence of token IDs
        // ...

    private string ConvertOutputIdsToText(int[] outputIds)
        // Convert output token IDs into text
        // ...

Step 4. Connect the chat interface to the server endpoint

Finally, you must connect your chat interface to the server endpoint you created in Step 2. This will allow users to send input to your .NET Core application and receive responses from the ChatGPT model.

const sendMessage = async () => {
  const response = await fetch('/api/chat', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ text: inputText })
  const data = await response.json();

These are just some general steps you can follow to integrate ChatGPT into your .NET Core application. The specific implementation may vary depending on your use case and requirements.

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