AI Beta Reader: An Honest Read of Your Whole Novel - Slima
FREE Your first reader report is on us

Find mistakes before showing anyone.

A full read of your book in under a day. See where readers lean in, where they stop reading, and the one thing to fix first.

app.slima.ai · Reading Report
📖 The Lighthouse Keepers v4
5 readers
Maya, 34 · literary
David, 47 · ex-editor
Pia, 22 · YA
6 editor passes ✓
ATTENTION CURVEDELIVERED
Stopped reading · Ch. 3
Pull7.8
Voice8.6
Pace6.1
Editorial letter
6 PASSES
Top fix
Pacing dips in chapters 3 to 4. Two readers flagged the time-jumps.
StructureCharacterMarket fit
Stopped reading
Chapter 3 · two readers slipped
📖 Reader · Maya, 34
"Chapter five had me hooked." · 82
📋 Editors
6 passes, structure to market fit
🔒 Privacy
Read once, never trained on
For writers getting ready to be read
Querying authorsSelf-publishersWriting groupsEditors

In short: An AI beta reader reads your manuscript from the first page to the last and reports back the way a reader would, not the way an editor would: where attention rose, where it fell, and where someone would have closed the book. Slima sends several readers through the same draft and only marks something as a real problem when at least two of them stop in the same place on their own. Your first report is free when you create an account.

What you get back

An honest read, chapter by chapter.

Most feedback is one polite paragraph. Slima reads every page, the way real readers do.

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The attention curve

See where readers lean in and exactly where they stop reading, chapter by chapter.

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Scores and a letter

Scores for pull, voice, pace and character, plus an editorial letter with one clear fix.

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Real reader personas

Five to eight readers, each with their own age, taste and reading history.

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Read once, kept private

Your book is cleared after the report and never used to train a model.

Attention curve

See where readers stop reading.

The curve traces the rise and fall of attention across the whole book. Click any dip to jump straight to the passage that lost them.

  • Drop and peak detection, per chapter
  • A reading heatmap and inner monologue per paragraph
Attention curve
Where readers lean in, where they slip
Stopped reading · Ch. 3
Maya, 3482
David, 4764
Pia, 2291
The report

Scores, quotes, and one clear fix.

Overall scores, real reader reactions in their own words, and an editorial letter that reads like the note a publishing house would actually write. Plus the single thing to fix first.

  • Scores for pull, voice, pace, stakes, character
  • Shareable and exportable to your editor
Reading report · The Lighthouse Keepers
v4 · 5 readers · 6 editor passes
Pull7.8
Voice8.6
Pace6.1
Character8.3
Top fix: Pacing dips in chapters 3 to 4. Two readers flagged the time-jumps.
Real readers

Reactions in their own words.

Each reader has a real taste: age, reading history, what they love and what loses them. Build your own and keep the same panel across every draft.

  • Inner monologue: "almost stopped here"
  • Market simulation by genre and audience
M
Maya, 34
"Almost stopped at chapter three, then five hooked me."
D
David, 47
"Lost her interior in the middle, and I lost her."
P
Pia, 22
"Honestly? I loved chapter three. That mess is the point."
Under the hood

Two engines, one report.

Readers reflect the real reading experience. Editors do the structured analysis. Both run on every draft.

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Editors, six passes

Structure, character, pacing, prose, market, overall. Drawn from the working habits of 200+ senior editors.

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Custom reader personas

Define a reader's taste, age, and history, then keep the same panel across every draft.

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Read once, never trained on

Your book is cleared from memory after the report and never used to train a model.

What does an AI beta reader actually do?

A human beta reader gives you a paragraph three weeks later, and it is usually kind. An AI beta reader gives you a position. It reads every chapter and hands back a map: the attention curve across the whole book, the paragraphs people skimmed, the chapter where someone would have put it down, and scores for pull, voice, pace and character. It is not telling you whether the book is good. It is telling you where the book loses people.

How do you know it is really reading, and not just being polite?

This is worth asking of any AI reader, because a model's default reaction is praise, and praise is worth nothing to you. Three things in Slima are built specifically against it:

  • Every reader carries a banned-word list. The hollow compliments a model reaches for first are blocked at the source, so it has to say something specific or say nothing.
  • Every reader has its own breaking point: the kind of chapter that would make it stop reading. Those points are recorded as locations in your book, not as feelings.
  • Nothing becomes a real problem on one reader's word. At least two readers have to stop in the same place, independently, before it reaches your report.

What an AI beta reader cannot do

It cannot tell you whether your book is worth writing. It will not defend a strange choice that happens to be the entire point of the book, and it does not know your genre's readers the way someone inside that community does. Treat the report as a map of where attention leaks, not as a verdict. The decisions stay yours, and the people who genuinely care about your work are still worth waiting for.

When is the right time to run one?

After a draft you can bear to reread, and before you send it to anyone whose time you cannot spend twice: an agent, a paid editor, the three friends who will read it once. Running one on a first draft mostly returns what you already knew. Running one before you query tells you which chapter is going to cost you.

“Slima's writing coach is right there when I need it and never gets in the way. Version control lets me revise freely, and offline writing with cloud sync means I never lose a thing. Writing used to be lonely — now there's company and a real sense of safety. Wait, you're telling me Beta Reader will actually read my draft and give feedback? (silently sobbing)”
XX
Xinxinzi
Keyboard Warrior
FAQ

What writers actually ask.

Is the first report really free?

Yes. A new account starts on a trial that includes one full reading report, and no card is required. After the trial, reports come with the paid plans; the free plan does not include monthly reports.

Will it just tell me my book is good? +

It is built so that it cannot. Empty praise is blocked at the word level for every reader, so each one has to point at a place in your book. And an issue only reaches your report when two readers stop at the same spot independently, so one agreeable reader cannot carry it.

Does it read the whole book, or a sample? +

The whole book. An attention curve only means something if it covers the first page through the last, and that is exactly the part most feedback skips.

How long does a report take? +

Usually back within a day.

What happens to my manuscript? +

It is read once and cleared afterwards, and it is never used to train a model.

Can this replace human beta readers? +

No, and be careful with any tool that claims it can. What it replaces is the waiting: you can find the chapter that loses people this week, instead of discovering it after you have spent three readers on it.

Let your book be read once.

Your first report is on us. A full read, no card required, usually back within a day. Read once, then cleared.