Yeah, when I say "current day Claude" I'm referring to Opus 4.5, which is what I always use on the max plan.

opus 4.5 is truly like magic, completely different type of intellience - not sure.

most of my experience with 4.5 is similar to codex 5.1, where I just have to scold it for being dumb and doing things I would have done as a teenager

dumbness usually comes from lack of information, humans are the same way - the difference between other llms is that if opus has information it has a ridiculously high accuracy on tasks.

Magic when it works.