It is *horrible* on sports. I just published a story about its insane habit of writing fictional stories when it is asked about real teams.
When I asked for a story about the 2003 Detroit Tigers - one of the worst teams in baseball history - it gave me a lengthy article about their thrilling run to their first World Series championship in more than 50 years.
However, when I used the same wording and asked about other Detroit teams - ones that had actually won championships - it gave me accurate articles. There was no indication of which articles were factually based and which were (apparently?) fan service.
https://medium.com/@davehogg/chatgpt-keeps-losing-to-reality-79d05d6e6f6e