The AI Models Index tracks the pace and quality of AI releases and shows that...

https://www.bust-bookmark.win/the-ai-models-index-keeps-you-up-to-date-with-premium-releases-from-15-top-labs

The AI Models Index tracks the pace and quality of AI releases and shows that in 2026, new models are launched every 4.5 days on average. While 56% of updates bring improvements, 16% cause performance regressions. Overall, there’s a median gain of +9