OK, I've gotten a full AI log from turn 1 to turn 485 shortly before I get Sedentary Lifestyle. Playing on Emperor, I'm well ahead of all the Civs I've met, though some are certainly doing better than the (lower difficulty setting) game which inspired this thread. I'm impressed I managed to go 485 turns without crashing! The log file is kind of huge, but it compressed pretty well. I hope it's useful.