How the score is built. No black boxes.
You’re judged by a rubric, so we judge you by the same one — out loud, line by line. Here is exactly how PrepRoadRunner turns your answer into a score you can trust.
STEP_01
We mirror the rubric
We don't hack the test or chase tricks. We decode the examiner's published rubric and grade against each criterion — so every point is one you could defend to a human examiner.
STEP_02
Multi-model reasoning
Your response is assessed with frontier models (OpenAI, Anthropic, Gemini). Cross-checking models reduces the odds of any single model’s blind spot becoming your score.
STEP_03
Speech: Whisper
Speaking answers are transcribed in real time with Whisper, so fluency and pronunciation are judged from what you actually said — not a rough guess.
STEP_04
Every score, explained
No number ships without the reason behind it: which criterion you hit, which you missed, and the specific edit that moves you up the scale.
// WHAT WE WON’T DO
We don’t invent scores, fake reviews, or promise a result we can’t control. Our score is a rubric-aligned estimate to train against — the official exam is set and scored by the official testing body, not by us.
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