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Classifying Images with GPT-4 in C# — A Simple Guide

How to Classify Images Using OpenAI’s GPT-4

Yohan Malshika
5 min readJan 30, 2025
Classifying Images with GPT-4 in C# — A Simple Guide

In this article, we’ll go over how you can classify images, like invoices or bank statements, using OpenAI’s GPT-4 LLM model. This process involves sending an image to OpenAI’s API, processing it, and receiving the classification result, all done through a simple C# console application.

Here’s the full process explained in simple steps:

What is Image Classification?

Image classification is the task of assigning a label to an image based on its content. For example, you can classify an image as an “Invoice” or a “Bank Statement” by analyzing the text, layout, and structure in the image. We’ll be using OpenAI’s GPT-4 model to classify images using text and pattern recognition.

Setting Up the Project

To begin, you need to create a C# console application. This is where we’ll write the code that will interact with OpenAI’s API.

1.Create a new console project:

  • You can use Visual Studio, Visual Studio Code, or the command line (dotnet new console).

2. Install necessary libraries:

  • We need Newtonsoft.Json for handling JSON in our…

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Yohan Malshika
Yohan Malshika

Written by Yohan Malshika

Software Engineer | .Net Developer | Technical Writer

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