The AI Models Index helps you see what changed between model releases before...

https://trentonsexcellentthoughtss.evergrovio.com/posts/how-close-are-the-top-models-on-lmarena-in-october-2026

The AI Models Index helps you see what changed between model releases before you upgrade. It tracks 178 releases with verified public release dates, then uses blind-vote checks, where people compare outputs without knowing which model made them