The AI Models Index tracks model changes with verified public release dates and...

https://direct-wiki.win/index.php/How_Close_Are_the_Top_Models_on_LMArena_in_October_2026%3F

The AI Models Index tracks model changes with verified public release dates and blind-vote checks, so you can compare versions before upgrading. See 178 releases and a 16% regression rate to judge whether a new model is worth the switch.