The AI Models Index keeps tabs on premium releases from 15 labs since 2023,...

https://eduardosnicechat.publishlane.com/posts/how-do-you-define-a-premium-ai-model-release

The AI Models Index keeps tabs on premium releases from 15 labs since 2023, with verified dates and blind-vote quality checks, refreshed every two weeks. In 2026, we've seen an average of one new release every 4.5 days—a 56% faster rollout pace