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

https://felixssuperperspective.brightsora.com/posts/what-does-the-index-do-when-the-five-ais-disagree

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