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

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

The AI Models Index tracks premium AI releases from 15 labs since 2023, with verified release dates and blind-vote quality checks, updated every two weeks. On average, new versions like GPT-5.2 arrive every 4