The AI Models Index tracks 178 model releases with verified public release...

https://penelopessmartdigests.talesignal.com/posts/how-many-lmarena-snapshots-does-the-index-use-and-since-when

The AI Models Index tracks 178 model releases with verified public release dates, so you can see what changed and when. It pairs release history with blind-vote checks that compare models without showing voters which one they’re judging