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Software engineer here, so I am unsure if it counts but we built a product that's doing ~$500k/year and ~95% of it is vibe coded.

The difference would be, we knew what we were doing (This makes me sleep better at night.), because of pre LLM era experience.

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That's impressive How much of the code did you write or fix yourself And has it been a pain to maintain or has AI been pretty good at handling that too?

I wrote under 5% of the code by hand. It was mainly telling the AI to build x and how to build it. With the new Fable 5.1, even the how part is getting replaced.

For this project, the maintaince is not too big of a pain, but we are working on another project where it's an absolute pain. Every PR is like 100k lines change, simple bug fix needs 600k tokens. We are probably doing a choppy job here.

The size of the codebase definitely plays a role.

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