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Research Summary: How consistent is the algorithm? Examining the intra- and inter-rater reliability of LLM-based writing assessment

Original authors
Attribution requires verification
Original source
Frontiers in Education
Summary & Analysis prepared by
Aziz Shuaib Ausi
Resource type
Research Summary / Knowledge Resource
Resource published on AZIZ OS
13 August 2026
Last updated
22 September 2026
Reading time
1 min
Publication type
Executive Guide
Availability
Open access
About this Summary & Analysis

AZIZ OS provides independently prepared summaries and analytical interpretations of externally published research and knowledge sources. The underlying works remain attributable to their original authors and rights holders. This resource is intended to improve accessibility and understanding and does not replace the original publication.

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A study published in Frontiers in Education examined the reliability of Large Language Model (LLM)-based writing assessment, specifically using OpenAI's ChatGPT. The research focused on assessing 192 essays from EFL learners, applying a criterion-based analytic rubric. The study found high intra-rater reliability for the LLM, indicating consistency in its scoring over time.

Why it matters

The consistent performance of AI in assessment offers potential for scalable and objective evaluation processes across various domains. Understanding the reliability of LLM-based tools is crucial for their integration into existing frameworks and for developing future strategies that leverage artificial intelligence.

Key insights

  • LLM-based scoring demonstrates high intra-rater reliability, meaning consistent scores for the same essays over time.
  • OpenAI's ChatGPT was utilized to assess EFL learner essays using a criterion-based analytic rubric.
  • The assessment rubric covered task achievement, grammatical range and accuracy, lexical resources, organization, and mechanics.
  • The study replicated scoring after three weeks under similar conditions to assess intra-rater reliability.

Source

Frontiers in Education — https://www.frontiersin.org/articles/10.3389/feduc.2026.1861960

Citation

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Verification ID
ASA-EXG-2026-00205
Version
v1.0 · r0
Issued
13 August 2026
Resource prepared by
Aziz Shuaib Ausi
Resource status
Research Summary / Knowledge Resource
Underlying work
How consistent is the algorithm? Examining the intra- and inter-rater reliability of LLM-based writing assessment
Original authors
Attribution requires verification
Original source
Frontiers in Education
Provenance status
Attribution requires verification
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Underlying publication rights remain with the respective copyright holder(s). Refer to the original source for authoritative publication and licensing information.

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