HELENA, Mont. — A quote from Wyoming’s governor and a local prosecutor were the first things that seemed slightly off to Powell Tribune reporter CJ Baker. Then, it was some of the phrases in the stories that struck him as nearly robotic.

The dead giveaway, though, that a reporter from a competing news outlet was using generative artificial intelligence to help write his stories came in a June 26 article about the comedian Larry the Cable Guy being chosen as the grand marshal of the Cody Stampede Parade.