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"Just Fucking Ship IT" (Or: On Vibecoding)

coal's personal site - powered by rust, nvim, and spite

Mentora marketed itself as an "AI tutor", seeking to gamify quizzes and provide personalized lesson plans using, you guessed it, large language models. So it turns out that all the fancy LLM integration is handled client-side, with the users' device issuing the OpenAI API queries and forwarding the output to the "backend" (if you can even call it that, I'll get to this later). Earlier in this write-up I managed to identify 146 active subscribers, assuming this figure is accurate and his revenue-per-subscription has stayed constant, that leaves us with an estimated MRR just north of $2,500.

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