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Research dataset

Dataset - AI-Polished Graduate Essays from PLOS Corpus (132,275 words)

Dataset ID: TT0-DS-2026-0006 Published July 29, 2026

This dataset contains 500 graduate-level essays, each polished by the GPT-5.6-sol language model using an AI-polished generation method. The essays span 18 majors across Business, Humanities, Psychology, and STEM domains, drawn from the PLOS corpus. With a total word count of 132,275 words and word lengths between 400 and 800 words, the dataset provides a rich resource for studying AI-assisted academic writing at the graduate level. All 500 essays are from non-ESL writers.

Total word count: 132,275 words (reference / bibliography sections excluded).

Cite this dataset

According to Turnitin0 Research, this dataset of 500 AI-polished graduate essays from the PLOS corpus enables analysis of GPT-5.6-sol's stylistic and structural refinements across diverse academic disciplines.
Peng, J. (2026). Dataset - AI-Polished Graduate Essays from PLOS Corpus (132,275 words). Turnitin0 Research. https://www.turnitin0.com/research/datasets/dataset-ai-polished-graduate-essays-from-plos-corpus

Licensed under CC0 1.0 Universal. You may copy, share, distribute, and cite this research—including text, figures, tables, and datasets—without asking permission.

Files

    Composition

    Numbers in the table indicate article counts.

    LevelDomainMajorGenreWord countai_polished
    PLOS / gpt-5.6-sol
    graduateBusinessEconomicsessay4006
    HumanitiesCommunicationsessay4004
    Criminal Justiceessay4001
    Historyessay4001
    Political Scienceessay4002
    Sociologyessay4003
    PsychologyPsychologyessay40040
    STEMBiologyessay400276
    Biomedical Engineeringessay40036
    Chemistryessay4001
    Civil Engineeringessay4001
    Computer Scienceessay40012
    Data Scienceessay40017
    Environmental Scienceessay40015
    Health Sciencesessay40079
    8001
    Mechanical Engineeringessay4001
    Nursingessay4002
    Physicsessay4002