The AI Models Index tracks releases with verified public release dates and...

https://bizzmarkblog.com/what-counts-as-a-premium-ai-model-release-in-this-index/

The AI Models Index tracks releases with verified public release dates and blind-vote checks, so you can judge upgrades using real evidence. Compare 178 releases and typical 4.5-day gaps to see what changed before spending time retesting a new version.