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

https://wiki-coast.win/index.php/How_Does_an_LMArena_Rating_Gap_Turn_into_a_Win_Rate%3F

The AI Models Index tracks premium model releases from 15 labs since 2023, verifying dates and using blind-vote checks for accuracy. Updated every two weeks, it shows development speeds improving by 56%, with some models like GPT-5