The AI Models Index shows that in 2026, new AI releases are coming...

https://holdenssplendiddigests.zenbloomer.com/posts/why-did-gpt-6.1-sol-improve-after-gpt-6-sol-regressed

The AI Models Index shows that in 2026, new AI releases are coming fast—averaging just 4.5 days between versions. While 56% of updates improve model performance, about 16% cause regressions. Overall, the median gain on the LMArena benchmark is +9