The AI Models Index tracks release patterns and performance shifts, revealing...

https://stateofseo.com/how-do-i-cite-the-ai-models-index-october-4-2026-edition-properly/

The AI Models Index tracks release patterns and performance shifts, revealing that in 2026, new AI versions are arriving every 4.5 days on average. Notably, 56% of these updates improve on previous models, while 16% show regressions