# Simulated students that make realistic mistakes help AI tutors learn faster

> Source: <https://the-decoder.com/simulated-students-that-make-realistic-mistakes-help-ai-tutors-learn-faster/>
> Published: 2026-09-20 09:50:32+00:00

Microsoft and the University of Illinois built StudentSim to replicate individual students from limited data and give AI tutors fast, low-cost feedback. In tests covering 60 students across chess, English, and math, it outperformed GPT-5.4. A chess tutor trained with StudentSim also earned the highest expert ratings among three versions tested.

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