The tutor just cost one nine-hundredth. studentbench tested 2,383 students and found ai tutoring…
the tutor just cost one nine-hundredth. studentbench tested 2,383 students and found ai tutoring matched expert human tutors on gre prep gains, at about 918 times lower cost per point, per oct 2 reporting.
the tutoring line item just collapsed.
Context
StudentBench is a suite of AI teaching evaluations. Its paper, AI and human tutoring yield equivalent GRE learning gains, ran 2,383 participants through AI, human or no tutoring on verbal GRE questions.
AI Weekly reports one AI tutor matched human learning gains at $0.0052 versus $4.81 per percentage point, which the paper puts at 918 times cheaper.
The 2,383 students, equivalence on GRE gains and the 918 times figure match the paper and AI Weekly. The post says 'per oct 2 reporting'; AI Weekly's piece is dated Sep 24. Two versions of the paper excerpts give different p-values (.015 and .044), so the statistical detail varies by version. 'Expert human tutors' matches the paper's wording.
'the tutoring line item just collapsed' is the author's opinion.
Related work
- arXiv: StudentBench, AI and human tutoring yield equivalent GRE learning gains ↗The paper.
- StudentBench leaderboards ↗Cost per percentage point chart.
- AI Weekly: AI tutors match human GRE gains at 918x lower cost ↗Summary, Sep 24, 2026.
Watch next
- Read the paper's cost method before using the 918 times number.
Sources
- arXiv 2609.28470, StudentBencharxiv.org
- StudentBench leaderboardsstudentbench.org
- AI Weekly, Sep 24, 2026aiweekly.co
Provenance
The note above is reproduced unedited from the original post, first published on Threads on 11 October 2026 at 04:17 IST. Sources are the papers and datasets the note draws on.
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