The AI Models Index keeps tabs on premium model releases from 15 labs since...

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

The AI Models Index keeps tabs on premium model releases from 15 labs since 2023, with verified launch dates and blind-vote quality checks. Updated every two weeks, it shows the pace of innovation — like GPT-5.2 rolling out just 4.5 days after GPT-5