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

https://chloesbrilliantjournal.capitaljays.com/posts/what-are-release-days-and-why-do-they-matter-more-than-raw-releases

The AI Models Index keeps tabs on premium releases from 15 top labs since 2023, verifying dates and using blind-vote checks for accuracy. Updated every two weeks, it shows that new models now come out every 4.5 days on average—a 56% faster pace