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

https://eduardosnicechat.publishlane.com/posts/what-is-a-coin-flip-result-in-the-index-ratings

The AI Models Index tracks premium model releases from 15 labs since 2023, verified with exact dates and blind-vote checks. Updated every two weeks, it shows an average 4.5-day gap between releases—a 56% faster pace. See clear comparisons like GPT-5