The U.S. Copyright Office has stated that under current law, a work must be created by a person to be copyrighted. This means that a picture or story generated entirely by a computer program cannot be copyrighted. Just writing a text prompt for the program is not enough to be considered the author, because the user doesn't have enough creative control over the final result. However, a person can still get copyright protection for their creative contributions. For example, if you take a computer-generated image and make significant creative changes to it, your changes can be copyrighted. You can also get copyright for the creative way you arrange or combine computer-generated content with your own work, like in a comic book. The Office believes that current laws are sufficient for now and that no new legislation is needed to address this issue.
US Copyright Rules for New Tech
In the U.S., only the human-created parts of a work made with new technology can be copyrighted.