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

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

The AI Models Index tracks premium AI releases from 15 top labs since 2023, verifying dates and using blind-vote checks for accuracy. Updated every two weeks, it shows the pace of innovation — like a 56% improvement rate between GPT-5.1 and GPT-5