Question: Is there a platform that allows me to have a personalized pen pal experience, where I can choose the type of pen pal I want to interact with?

If you want a more personal pen pal experience, Lettergram could be the way to go. The service lets you exchange personalized physical letters with a custom-created AI pen pal, and you can pick from pen pal types like historical, child, adult, fantasy or support pen pals. The service sets up a back-and-forth exchange of letters, with you writing to your pen pal by mail and the AI responding based on your letters.

Another service you might enjoy is Inworld Arcade. This immersive chat service lets you talk to AI characters by voice or text. There are a lot of categories, including Original Creations, Assistants and Interactive Adventures. You can talk to historical figures, celebrities or characters from books, movies and video games. It's a good way to get a lot of different social interactions.