The AI Models Index shows that in 2026, new AI models are released roughly...

https://josuesbestword.quillnesty.com/posts/what-does-a-56-improvement-rate-mean-for-ai-upgrades

The AI Models Index shows that in 2026, new AI models are released roughly every 4.5 days, marking a brisk development pace. While 56% of these updates improve performance, about 16% result in regressions, reflecting ongoing challenges