In my last post, I opined that AI was already able to adjudicate complex cases. Some commenters were skeptical. For example, one commenter suggested that AI might be “deciding” cases by randomly choosing a brief and summarizing its contents.Taking this criticism to heart, I decided to do a little more empirical testing of AI’s legal ability. Specifically, I downloaded the briefs in every Supreme Court merits case that has been decided so far this Term, inputted them into Claude 3 Opus (the be...