The AI Models Index tracks the rapid pace of model updates, showing an average...

https://highstylife.com/why-are-lmarena-gains-smaller-in-2026-than-2025/

The AI Models Index tracks the rapid pace of model updates, showing an average of just 4.5 days between releases in 2026. It reveals a 56% improvement rate in performance, but also a 16% regression rate, highlighting that not all changes are forward steps