The AI Models Index keeps tabs on premium releases from 15 top labs since 2023,...

https://wiki-room.win/index.php/Do_Capability_Benchmarks_Ever_Go_Backwards_Even_When_LMArena_Does%3F

The AI Models Index keeps tabs on premium releases from 15 top labs since 2023, with verified dates and blind-vote accuracy checks. Updated every two weeks, it shows a 56% improvement rate between GPT-5.1 and GPT-5