The AI Models Index tracks premium model releases from 15 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 labs since 2023, verified with accurate dates and blind-vote checks. Updated every two weeks, it shows a clear trend: release cycles have sped up to an average of 4.5 days between updates in 2026