> This year it became common for people to entirely delegate coding to AI

This has been the case for around 2 years now, more reliably - a year. We've mostly stayed there since then.

Saying that more people started doing it isn't indicative of significant improvement. Some people just started doing it later.

I can't speak about math because I haven't used AI for that application, but I know that there hasn't been any significant advancement in coding in this year on base models. There has been more RL work, more harness work, more tools, they all expanded some capabilities like cyber or orchestration or tool use, but raw intelligence of base models is no longer where the main focus is.