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

https://fast-wiki.win/index.php/How_Long_Does_Google_Take_Between_Announcing_and_Shipping_a_Model%3F

The AI Models Index tracks premium model releases from 15 top labs since 2023, with verified dates and blind-vote checks for accuracy. Updated biweekly, it shows releases now happen every 4.5 days on average—a 56% speed improvement