Rori's AI Tutor Yields a Year of Math Progress for Just $5 per Student
import_jmr · x · 2026-08-06
Rori is an AI math tutoring system running via WhatsApp on basic phones. In a randomized trial, students using it a few times a week gained roughly a year of extra math learning (0.36 SD) at a cost of about $5 per student annually.
Its success relies on three product decisions beyond the model itself:
- Teaching at the right level: Places students by ability rather than grade, drilling with instant feedback.
- Accessible channel: Runs natively inside WhatsApp on cheap phones, requiring no extra installation.
- Fenced curriculum: The model is strictly bounded by 500-plus expert-written lessons to prevent hallucinations and ensure accurate guidance.
Related event: Rori System Boosts Math Scores at Ultra-Low Cost(4 posts)→
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