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, verifying release dates and using blind-vote checks for accuracy. Updated every two weeks, it shows the pace speeding up—like GPT-5.2 launching just 4.5 days after GPT-5