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Any discipline.
Your pick of AI reviewers, named on every report.
Expert certification when you want it.

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XSci Open Review Competition 2026

100 papers.
100 expert reviews.
On us.

Not selected? Your paper keeps its DOI and its public AI referee report, you can answer that report on the same page, and you get $49 off XSci Human Review service.

  • $500 award per certified paper with a public report
  • 100 papers get a paid expert review
  • Free to enter, any discipline

Opens 25 September 2026
Closes 30 November 2026, 23:59 AoE

Enter the competition

Results by the end of December. Method, discipline breakdown and what went wrong: all published.

Three things XSci does

1. Post

We never charge you to publish.

  • Free
    Posting a preprint costs nothing.
  • Yours
    No exclusivity. Submittable to any journal afterwards.
  • Instant
    Published at once with DOI.

2. Review

Pick from the top AI reviewers, in one place.

  • Choose who reviews you
    Reports arrive in minutes to hours. Each is a report, written by the reviewer named on it. None of them is a certification.
  • Review in the open, and get a discount
    Because a report only the author can see helps one person. A report on the page helps everyone who reads the paper.
  • 0h
    Reports arrive. Only you can see them.
  • 48h
    You read them first. Publish the report at a discount, or keep it private at full price.
  • Then
    The report is on the page, next to the paper, for anyone who reads it.

3. Certify

One qualified expert. Your target journals. A yes or a no.

  • Who reviews
    An expert from one of the following groups: authors you cite, their co-authors, or authors who have published in your target journals or top journals in your field by default.
  • What they judge
    Whether the paper, after reasonable revision(s), has the potential to be published in the target journals of your choice, or in the top journals in the field.
  • What you get
    A badge XSci Peer-Certified Preprint on the page with records of the manuscript version, the target journals, and the certified date if yes. It stays as XSci Preprint if no.

Latest preprints

  1. An asteroseismic age estimate for the Pleiades using a neural-network emulator of rotating δ Scuti pulsation models
    Anuj Gautam, Simon J. Murphy · October 17, 2026
  2. Resolution of two conjectures by Erdős and Hall concerning separable numbers
    Stijn Cambie, Wouter van Doorn · October 17, 2026
  3. Four collinear points or six visible points
    Stijn Cambie · October 17, 2026
  4. HybridDualPathNet: Cross-Fusion Attention of EfficientNetV2 and Swin Transformer for Brain MRI Classification of Alzheimer's and Parkinson's Disease
    Jarpula Nirjala, Rahul Patel · October 17, 2026
  5. A Phenomenological Critical-Density Bounce in a Closed FLRW Interior: Interior Dynamics, Curvature, and Constraints on Schwarzschild Matching
    Namith Tishan Rathnayake · October 17, 2026
  6. The Covering Radius of the Reed--Muller Code RM(1,9) is 242
    Qichun Wang, Yueying Lou, Zifan Wang · October 16, 2026

View all preprints

To make the validation of science as open, as fast, and as fairly rewarded as its production.

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