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

https://zulu-wiki.win/index.php/Is_GPT-5.2_Actually_Worse_Than_GPT-5.1_in_Blind_Votes%3F

The AI Models Index tracks premium model releases from 15 top labs since 2023, with verified launch dates and blind-vote accuracy checks. Updated every two weeks, it shows that release frequency has improved by 56%, averaging just 4.5 days between updates