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

https://garrettsinsightfulchat.wordcanopy.com/posts/how-often-do-premium-ai-models-ship-in-2026

The AI Models Index keeps you up to date with premium model releases from 15 top labs since 2023, verified by release dates and blind-vote checks. Updated every two weeks, it shows improvements like a 56% faster release rate—GPT-5