First of all it is important to know that this is not possible natively, we must use Gravatar to do this.
Briefly gravatar is a platform that allows you to have custom photos on Wordpress based sites or sites that support this format of avatar or profile picture.
So let’s start
The Gravatar/Wordpress account must be created with the SAME E-Mail with which the ChatGPT account was created.
1 You must create a Gravatar account (It is the same as a wordpress account, if you already have one just log in to it) https://en.gravatar.com/
2 At the top right of your profile select “Add an image”
3 Select the image you want to upload and save changes
4 After a while you will have the picture in the ChatGPT chat (In my case I had to wait 1 hour for the changes to be applied)
- Additionally, the picture you choose must be appropriate as it will be shown on ChatGPT as well as on pages or blogs where you are registered with this E-Mail.