Practice AI Architecture on Small, Checkable Problems

Each problem is a working but flawed AI system: a support bot that never caches, a router that sends everything to the biggest model. Fix it, run it against a simulated model with openly stated rules and prices, and see exactly what it costs.

Try the Cache-Blind Chatbot

How It Works

  1. Read the System

    Every problem states its rules and prices openly. Your numbers come from your own variant, so your answer is yours.

  2. Fix It

    Edit a config, pick an answer, or work out a number. Simulated problems run in your browser, with no API key needed.

  3. Get Checked

    The server checks your final answer. Pass to earn points; do better than the pass line to earn more.

Start Here

  1. C-01
    Cache-Blind Chatbot

    A support bot resends its whole product manual on every turn. Cut the bill without losing a single answer.

    Difficulty
    4, Medium
    Format
    Config
    Mode
    Simulated

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