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

https://chloesbrilliantjournal.capitaljays.com/posts/why-does-gpt-5.2-cost-more-than-gpt-5.1

The AI Models Index tracks premium AI releases from 15 top labs since 2023, verifying dates and using blind-vote checks for accuracy. Updated biweekly, it shows real trends—like a 56% faster rollout pace in 2026, cutting time to just 4.5 days per release