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

https://lanesniceblog.scriblorax.com/posts/which-deep-research-ai-was-best-at-finding-correct-release-dates

The AI Models Index tracks premium releases from 15 labs since 2023, with verified dates and blind-vote accuracy checks. Updated biweekly, it shows release speeds improved by 56%—now just 4.5 days between updates. Recent highlights include GPT-5