The AI Models Index keeps tabs on premium model releases from 15 top labs since...
https://wiki-square.win/index.php/What_Counts_as_%22Public_Use%22_for_an_AI_Model_Release_Date%3F
The AI Models Index keeps tabs on premium model releases from 15 top labs since 2023, verifying dates and using blind-vote checks for accuracy. Updated every two weeks, it shows release cadences improving — like GPT-5.2 launching just 4.5 days after GPT-5