The AI Models Index shows that, in 2026, new AI models are released every 4.5...

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

The AI Models Index shows that, in 2026, new AI models are released every 4.5 days on average. While 56% of these updates bring measurable improvements, 16% lead to performance regressions. Overall, median gains on the LMArena benchmark stand at +9