In case you haven't heard of MidJourney, it is a bot that you can interact with on Discord. Before your eyes glaze over, it's also one of the most remarkable displays of bleeding edge "ai," or what I like to refer to as, "really well-made machine learning tech."
Depending on a very broad limitless amount of keywords, you can generate still images of ultra-realistic CGI, renderings based on the style of other well-known artists, fantasy illustrations, yadda, yadda, the list is virtually endless.
I'd rather not give a full review, there are plenty of people out there that write
more better than me. Instead, here are some of the renderings I came up with while playing around.
Keywords: A man coming out of a cup of espresso
Keywords: Tall skinny evil scientist mixing large pot of coffee
Keywords: Alien in space suit, ultra-realistic
Keywords: Alien with a smile waving hand, in styke of Pixar
Keywords: Futuristic spaceman, black space suit, red fog
Keywords: A black lizard with red glowing eyes
Keywords: Dragon with troll face, fantasy art
Keywords: Wizard with dark hood, red glowing eyes, fantasy art
Keywords: A renaissance man holding a cell phone, Da Vinci style
Keywords: Mobile phone advertisement in style of Leonetto Cappiello
Keywords: Assassin in black suit with red eyes
Keywords: Egyptian standing in front of Anubis and an Obelisk
Keywords: Futuristic Ezio in New York, Photo-realistic