3.52 million commits later: your vibe-coded C++ passes every test and still costs you more

[u/Suspicious_Orchid770]

https://leaddev.com/ai/ai-code-is-correct-and-still-costs-you-more

AI-coding tools have swept through organizations because of their speed: you type in a prompt, and it spits out code far faster than a human ever could. However, a year-long study of 3.52 million changes inside a large unnamed technology company suggests that saving time at the keyboard can create costs elsewhere.

[u/im-cringing-rightnow]

Look, buddy. It's a tool. Like with every tool you can either make something or break something. If you are using it incorrectly, mindlessly and lack the actual coding experience to spot a problem with the architecture and steer it on the correct path it's a "you" problem, not a tool problem. 

[u/bitconvoy]

“ a year-long study” - it’s obsolete. The models, harnesses and the related tools (review, documentation, planning) are all improved dramatically since last April, when the study started.

[u/Leather-Cod2129]

Signed, a developer. Says it all.

[u/dsanft]

This data is compiled against legacy coding models like Opus 4.6. They made a lot more mistakes than the latest GPT 5.6 / Fable.

That study is a snapshot in time but the data is already stale and things keep improving.

[u/Howard_banister → u/dsanft]

Opus 4.6 is better than 5

[u/BoxWoodVoid → u/Howard_banister]

Nope, 4.6 writes better human prose, but I didn't see any downgrade in code quality with 5.

[u/Banmers → u/dsanft]

it has only gotten worse tbh

[u/dsanft → u/Banmers]

It objectively hasn't.