Open Source AI Reviewer Coarse Beats Commercial Rivals Under $2

littmath · x · 2026-08-27

Open source AI peer review tool 'coarse' is released as a public good alternative to commercial services. Users pay the direct API cost (typically < $2) to receive a referee report with over 20 detailed comments. In blind evaluations, Coarse outperformed refine.ink, Stanford Agentic Reviewer, and reviewer3.com in coverage, specificity, and depth. The project is open source and allows users to submit papers or find existing reviews.

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