The AI Models Index keeps tabs on premium model releases from 15 top labs since...

https://reidyxab469.iamarrows.com/how-does-an-lmarena-rating-gap-turn-into-a-win-rate

The AI Models Index keeps tabs on premium model releases from 15 top labs since 2023, verifying launch dates and using blind-vote checks for accuracy. Updated every two weeks, it shows a 56% improvement rate in release speed—like GPT-5