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

https://www.foxtrot-bookmarks.win/the-ai-models-index-shows-that-in-2026-new-ai-model-releases-are-coming-every

The AI Models Index tracks premium releases from 15 leading labs since 2023, with verified dates and blind-vote checks to ensure accuracy. Updated every two weeks, it shows the pace of innovation—like a 56% improvement rate between GPT-5.1 and GPT-5