Forgot to mention. I made catsbook in 3 days and presentation earlier in 7 days.

I do think AI code assistant is super great.

Recently, I use Open Codex 5.2 + Extra high reasoning model with $200 monthly subscription most and it's the best among all the other coding agents.

(I have subscribed to 4 at the same time and use all of them across a dozen of projects at the same time)