viberole.app

What it is

A live AI quiz product — users answer questions, LLMs generate tailored output. Built full-stack on Next.js with OpenAI and Anthropic APIs routed on the server.

What I shipped

• Full product loop: auth, generation, payment, post-purchase delivery
• Stripe integration end-to-end — not a pretend checkout
• Provider-agnostic LLM layer so I can swap / A-B between OpenAI and Anthropic without touching the product code
• Prompt and cost guardrails so a single user can’t blow up the bill

Why it’s interesting

I wanted to see how far a solo engineer can take an AI product in 2025 — from a blank editor to a real paid flow. The answer turns out to be “pretty far” once the LLM plumbing is abstracted; most of the work ends up looking like normal product engineering.