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

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

The AI Models Index tracks premium AI releases from 15 labs since 2023, with verified release dates and blind-vote quality checks, updated every two weeks. On average, new versions like GPT-5.2 arrive every 4