PaperMentor: AI Writing Assistant for Research Papers Launches as Open-Source Tool
Researchers have developed PaperMentor, a multi-agent AI writing assistant that provides inline feedback on academic papers within the Overleaf editor. The system uses 12 specialized agents and an expert-curated skill library to generate concrete, actionable suggestions rather than simple grammar fixes or peer-review scores. In a user study, 90.6% of comments were rated actionable and 67.5% valid, outperforming a GPT-based baseline without the skill library.
PaperMentor is a human-centered AI writing assistant designed to address the scarcity of high-quality expert feedback for early-career researchers. Unlike existing tools that focus on grammar correction or simulated peer review with final scores, PaperMentor integrates 12 specialized agents covering aspects such as formatting compliance, phrasing accuracy, and terminology consistency, all drawing from an expert skill library curated from established researchers' writing advice. The system delivers feedback as native inline comments within Overleaf, preserving full authorship with human writers. A user study with 14 participants found that 90.6% of generated comments were rated actionable and 67.5% were rated valid, both metrics significantly exceeding a GPT-5.2 baseline that lacked the skill library. The paper has been accepted to the ACL 2026 Demo Track and the system is released as open source under the AGPL-3.0 license. The work is affiliated with researchers from multiple institutions, including Bernhard Schölkopf's group and collaborators from Mona Diab and Zhijing Jin's teams.
What's missing
The user study sample size is small (n=14), which limits statistical generalizability. The paper does not detail the diversity of paper types or research domains tested, nor does it report inter-rater reliability for the actionability and validity ratings. Long-term impact on writing quality or learning outcomes for early-career researchers is not assessed.
What different sources said
- arXiv cs.CLCenter
PaperMentor: A Human-Centered Multi-Agent Writing Tutor for AI Research Papers on Overleaf
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