The AI Models Index tracks premium model releases from 15 leading labs since...

https://stateofseo.com/how-do-i-cite-the-ai-models-index-october-4-2026-edition-properly/

The AI Models Index tracks premium model releases from 15 leading labs since 2023, with verified dates and blind-vote checks to ensure accuracy. Updated every two weeks, it shows a 56% faster release rate on average—like how GPT-5.2 rolled out just 4