The AI Models Index keeps tabs on premium releases from 15 labs since 2023,...

https://tango-wiki.win/index.php/How_Bad_Is_the_16%25_AI_Regression_Rate_in_2026%3F

The AI Models Index keeps tabs on premium releases from 15 labs since 2023, with verified dates and blind-vote checks to ensure accuracy. Updated every two weeks, it shows new models drop every 4.5 days on average—a 56% improvement rate