AFAIK AI detectors are about as reliable as the AI they're supposed to detect. This state is shifting as AI improves, and is unlikely to ever theoretically hit

AFAIK AI detectors are about as reliable as the AI they're supposed to detect. This state is shifting as AI improves, and is unlikely to ever theoretically hit 100% correctness (but may ultimately theoretically hit 0% correctness) . At best you can may be able to use such a detection as a flag to prompt further investigation. This much may or may not be warranted based on the state of AI detection at point X in time. However, you should not use AI detection software alone to serve as proof or disproof.