The AI Models Index keeps tabs on premium model releases from 15 labs since...

https://highstylife.com/what-model-had-the-longest-single-reign-at-1-in-2026/

The AI Models Index keeps tabs on premium model releases from 15 labs since 2023, with verified launch dates and blind-vote quality checks. Updated every two weeks, it shows the pace of innovation — like GPT-5.2 rolling out just 4.5 days after GPT-5