Around half a year ago I had a client... Client that told me I would be responsible for quite big system that needs to be written, that he vibecoded a lot of, and that I am supposed to use as much AI as possible and buy myself claude max plan.

Fine, at that point I needed something, anything, as I didnt had any project.

Long story short, there was 3 huge, huge repos, with tens of tousends of dead code lines. An API that half of endpoints didnt work. I started vibecoding (as requested by client, "becouse this claude AI produces shockingly good quality code" - direct client quote) and getting frustrated by what tf the AI was doing.

I was requested to take as many hours as needed to get the features delivered asap.

I managed to bend the reality to get compiling code that passes some smoke tests of some of the features. Features, that were poorly defined and I had some questions practially all the time (as the file with features was vibed also lmao), and usually anwser was something like "whatever works, mate".

It lasted 1.5 weeks. Every single day I was out of claude limit.

After 1.5 weeks client disappeared for few days, not responding, and after almost a full week I got lengthy message from him that roughly said "you are great developer, but you dont use AI enough so your velocity isnt exactly what I expected. Good luck with next projects".

Ooof. While I know it's probably worst productivity measure out there, but LoC wise, that was solid +30k in that 2 weeks, that I did indeed read through and knew it at least roughly does what it should.

Oh, and he finished the project himself with pure vibecoding, launched it, it failed immidietely as it wasnt technically sound. At least made me smile for half a second.

I will never forget trying to get Opus to follow architecture or do anything reasonably.

I rant about it for simple reason:
for some people the AI thing makes them impossibly delusional what the tool actually can do and what it is good for. Impossibly delusional. Don't be me. Don't deal with delusional clients.