The AI Models Index tracks premium releases from 15 leading labs since 2023,...

https://rapid-wiki.win/index.php/Where_Does_the_LMArena_Leaderboard_Dataset_Live_and_How_Many_Snapshots_Does_It_Have%3F

The AI Models Index tracks premium releases from 15 leading labs since 2023, with verified launch dates and blind-vote accuracy checks. Updated every two weeks, it shows a 56% improvement rate between GPT-5.1 and GPT-5.2