The AI Models Index shows that new AI models are being released every 4.5 days...

https://oliviasinsightfulthoughts.novacrestiq.com/posts/did-deepseek-really-slow-down-in-2026-or-is-it-just-my-impression

The AI Models Index shows that new AI models are being released every 4.5 days on average, highlighting a rapid pace of innovation. While 56% of these updates improve performance, 16% result in regressions, with a median LMArena gain of +9.3 points