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

https://wiki-burner.win/index.php/What_Happens_When_You_Wait_91_to_180_Days_Between_Model_Versions%3F

The AI Models Index tracks premium model releases from 15 labs since 2023, verified with exact dates and blind-vote checks to ensure accuracy. Updated every two weeks, it shows releases now come every 4.5 days—a 56% faster pace. For example, GPT-5