How I Built My Own ChatGPT Plus [A Beginner’s Guide]

This could be your first beginner-friendly LLM project.

Photo by Growtika on Unsplash

If you’ve been wanting to start working with large language models (LLMs), this tutorial will be a great place to start.

It’s designed to be approachable so that it won’t overwhelm you, but it still gives you a taste of what it’s like to work with LLMs.

Going hands-on with my LLM learning from the past year, I decided to build a ChatGPT-like app for myself (cost-effective against ChatGPT Plus) and add it to my portfolio of projects.

Here’s a quick sneak peek of what we’ll build:

Let’s get our hands dirty building our own ChatGPT.

Step 01: Creating the OpenAI API (GPT-4o)

Before coding, we need access to OpenAI’s GPT-4o model via their API. If OpenAI releases a newer model, you can simply make minor changes to the code and use the same API key.

Here’s how you can get your API key:

• Sign Up or Log In: Go to OpenAI’s Platform website and create an account or log in if you…