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

https://stateofseo.com/understanding-the-difference-between-point-releases-and-new-generations-in-large-language-models/

The AI Models Index tracks premium model releases from 15 top labs since 2023, verifying release dates and using blind-vote checks for accuracy. Updated biweekly, it shows an average 4.5-day gap between releases—a 56% improvement