The AI Models Index keeps tabs on premium model releases from 15 top 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 top labs since 2023, verifying release dates and using blind-vote checks for accuracy. Updated biweekly, it shows an average of 4.5 days between releases—a 56% faster pace