To access the GPT-4 model of ChatGPT, simply enter the site with your chatgpt login free and start a new conversation. In the top middle of the screen, you will see toggle buttons labeled GPT-3.5 and GPT-4. Switch to GPT-4, and you’ll be able to chat with the latest version of the chatbot. Note that you can only use it if you are a ChatGPT Plus user.