The AI Models Index keeps you up to date on premium model releases from 15...

https://penelopessmartdigests.talesignal.com/posts/is-there-really-a-premium-model-release-every-few-days-now

The AI Models Index keeps you up to date on premium model releases from 15 leading labs since 2023, with verified launch dates and blind-vote quality checks. Updated biweekly, it shows that release speed improved 56% in 2026, now averaging just 4