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

https://oliviasinsightfulthoughts.novacrestiq.com/posts/is-openai-actually-steady-on-release-cadence-or-does-it-swing

The AI Models Index tracks premium model releases from 15 labs since 2023, with verified dates and blind-vote checks to ensure accuracy. Updated every two weeks, it shows the pace of innovation—like improvements occurring every 4.5 days in 2026