The AI Models Index tracks premium model releases from 15 labs since 2023,...

https://touch-wiki.win/index.php/Why_Is_Gemini_4_Argon_Not_in_the_Release_Ledger_Yet%3F

The AI Models Index tracks premium model releases from 15 labs since 2023, verifying dates and using blind-vote checks to ensure accuracy. Updated every two weeks, it shows the pace of progress—like how GPT-5.2 rolled out just 4.5 days after GPT-5