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

https://victoriasmasterchat.yousher.com/why-do-most-labs-feel-slower-even-when-the-industry-feels-fast

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