Google opened an error-checker for technical documents. Peer review is just the first customer.

Google Research opened a tool to the public this week called Deep Review. It reads a manuscript or technical document and stress-tests it for logical gaps and mathematical errors.

It splits the document, spends more compute on the dense parts, runs parallel agents that each verify a section with the whole document in view, then grounds the findings against external search.

Google piloted it on more than 16,000 submissions across four computer-science conferences before opening it. Every user now gets two free document reviews a week.

It reads PDFs and plain text only, with multi-file support still coming. It can flag problems that aren't real and occasionally call a correct proof wrong, so the higher-level judgment stays with a human. It's a first reader, not a verdict.

Scientific peer review is the obvious first customer, and it's badly overloaded: those same conferences went from tens of thousands of submissions a few years ago to far more now, reviewed by the same volunteer pool.

But peer review is just the first buyer. Any field that lives or dies on whether a long technical document holds together, a due-diligence memo, a clinical protocol, a regulatory filing, a model's assumptions, has the same problem and no tool for it. Science is where this lands first. It isn't where it stops.

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