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

https://brookssniceop-ed.bearsfanteamshop.com/what-is-lmarena-and-why-are-blind-votes-used-for-ai-comparisons

The AI Models Index keeps tabs on premium model releases from 15 labs since 2023, verifying each with release dates and blind-vote checks. Updated every two weeks, it shows a steady pace—new versions drop every 4.5 days on average in 2026