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

https://bravo-wiki.win/index.php/Why_Did_Google_Slow_Down_on_Premium_Model_Releases_in_2026%3F

The AI Models Index tracks premium model releases from 15 labs since 2023, verifying dates and using blind-vote checks for accuracy. Updated every two weeks, it shows development speeds improving by 56%, with some models like GPT-5