The AI Models Index keeps tabs on premium model releases from 15 labs since...

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

The AI Models Index keeps tabs on premium model releases from 15 labs since 2023, with verified launch dates and blind-vote quality checks. Updated every two weeks, it shows the average time between releases is just 4.5 days—a 56% faster rate