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Manuscript AI vs Marlowe (Authors A.I.)

Prices checked · By Prannay Kedia, founder of Manuscript AI

We make Manuscript AI, one of the options compared here, so we've tried to say plainly when another is the better choice. Every figure about another provider links to its source.

The short answer

Marlowe, from Authors A.I., and Manuscript AI both turn a full manuscript into an AI report in minutes. The difference is genre: Marlowe is built for fiction and compares your book with bestselling novels, while Manuscript AI is built only for non-fiction. A single Marlowe Pro report costs $29.95, less on a subscription; Manuscript AI costs $19. If you write fiction, choose Marlowe. If you write non-fiction, choose Manuscript AI.

Why authors choose Manuscript AI

Marlowe is built for novels. Manuscript AI is built for non-fiction.

  • Built for your kind of book

    Authors A.I. says Marlowe can read non-fiction but its real expertise is fiction. Every question in Manuscript AI's report is about a non-fiction book.[1]

  • Questions a non-fiction book has to answer

    Is the main message clear? Does each chapter open and close cleanly? Will the reader know what step to take next? The report answers each one for your whole book.

  • $19, and you can get it back

    A single Marlowe Pro report is $29.95, and Authors A.I. doesn't give refunds. Manuscript AI is $19 with a 14-day money-back guarantee.[2][3]

Surprisingly, it was insightful and knew more about Christianity than any of my other editing software.”
E.P. Walker
Seven Things You Need to Know About God · Christian non-fiction
Get my report — $19See a sample report first →

14-day money-back guarantee · Results in 2 hours or less

At a glance

Marlowe (Authors A.I.) compared with Manuscript AI, checked October 15, 2026
Who it's forFiction authors who want an AI read of plot, pacing and characters, benchmarked against bestselling novels.[1]Non-fiction authors who want a structural read of a finished draft before they spend more on editing, readers or publishing.
PriceBasic report free. Marlowe Pro $29.95 per report, $19.95/month for 4 reports, or $159/year for 48. No refunds.[2][3]$19 per manuscript, one-time, any length (₹3,999 for buyers in India). 14-day money-back guarantee.
TurnaroundAbout 10 minutes.[4]Usually in under 10 minutes, guaranteed within 2 hours.
What you getAn online report on plot and narrative arc, pacing, characters, theme, dialogue and voice, mapped to story structures such as Save the Cat.[1][4]A report of 15–25 pages with an overall assessment, answers to your own questions, and a summary, recommendations and readability scores for every chapter. Sent as a PDF report by email, plus a private online link. See a sample.
Non-fiction fitFiction-firstFiction-first. Authors A.I. says Marlowe can read non-fiction but its real expertise is fiction.[1]Built for non-fictionBuilt only for non-fiction: self-help, business, memoir, biography and research-based books. It doesn't analyze fiction.
Choose it ifYou write fiction, or want beat-sheet analysis and comparisons with bestsellers.You want a fast, low-cost diagnosis of a non-fiction draft's structure, argument and readability, chapter by chapter.

What you get

What $19 gets you

  • An executive summary of the whole book
  • Answers to 8 editorial questions on structure, flow, voice and clarity
  • For every chapter: a summary, recommendations, word count, reading time, reading ease and grade level
  • Charts that show which chapters run long or read hard
  • Answers to your own questions about the book
  • A 15–25 page PDF by email, plus a private online link

From a real report

“Chapter VIII on movement is the clearest rupture. After the narrative warmth of Ogimi and the diet chapter, it becomes a catalogue of yoga types, tai chi styles, qigong’s ‘Tyau Shenn’ and step-by-step postures, and the Six Healing Sounds. The tie to ikigai is thin, and the chapter’s own admission, ‘It might feel confusing to be presented with all the Eastern traditions,’ confirms the overload.”

“Improvement: Open each chapter with a one-sentence bridge stating its link to ikigai…”

From the chapter-flow answer in our sample report on Ikigai. Read the full report →

Who it's for

Marlowe is for novelists. Authors A.I. describes it as analytical AI for fiction: it reads your manuscript and compares its pacing, structure and dialogue with bestselling novels across 22 fiction genres and subgenres.[1]

Manuscript AI is for non-fiction (self-help, business, memoir, biography and research-based books), where the questions are about argument, evidence and how the chapters build.

Price

Marlowe Basic is free and unlimited. A single Marlowe Pro report costs $29.95. A subscription costs $19.95 a month for four report credits or $159 a year for 48, which works out to $4.98 or $3.31 a report. Unused monthly credits don't roll over.[1][2]

Authors A.I. also sells a Market Fit report (comparable titles, book descriptions and keywords) for $29.95, or $39.90 bundled with a Pro report.[2]

Authors A.I.'s terms say it can't offer refunds. Manuscript AI costs $19 with a 14-day money-back guarantee. If you need several reports a month, a Marlowe subscription is cheaper per report.[3]

For a 60,000-word non-fiction book

Marlowe (Authors A.I.)

$29.95

One Marlowe Pro report[2]

Manuscript AI

$19

One report, any length

Turnaround

Authors A.I. says a Pro report takes about 10 minutes, and that books over 120,000 words may take longer. On speed, the two are close.[1][4]

What you get

Marlowe Pro covers plot and narrative arc, story elements and pacing, character development and consistency, conflict, theme, dialogue, setting and voice, with key recommendations and a revision checklist. It maps your book against structures such as the Hero's Journey, the Three-Act Structure and Save the Cat.[1][4]

Reports appear in an online dashboard; Authors A.I. says a full report would run to more than 70 pages. Marlowe Basic, the free report, covers line-level statistics such as dialogue versus narrative, sentence length, clichés and repeated words.[1][5]

Authors A.I. keeps manuscript files for as long as you subscribe or until you delete them. Your uploaded manuscript file is deleted automatically within 48 hours of your report being delivered, or within 48 hours of upload if you don't check out. We don't keep a copy of your manuscript text. Your report stays at your private link until you ask us to delete it. Both say they don't train AI on your manuscript.[1][6]

Manuscript AI: A report of 15–25 pages with an overall assessment, answers to your own questions, and a summary, recommendations and readability scores for every chapter. Sent as a PDF report by email, plus a private online link. See a sample.

Non-fiction fit

“its real expertise and experience is primarily with fiction”
Authors A.I.[1]

Authors A.I. says Marlowe can analyze any long-form narrative, including biographies, memoirs and histories, but describes its real expertise as fiction, and says Marlowe Basic was trained on bestselling fiction rather than non-fiction.[1][5]

So Marlowe may still help with a narrative memoir. For a prescriptive self-help or business book, plot, character and beat-sheet analysis doesn't map onto an argument-led book.

Manuscript AI: Built only for non-fiction: self-help, business, memoir, biography and research-based books. It doesn't analyze fiction.

Using both

There's little reason to use both on the same book: choose by genre. A narrative memoir is the one case where both can help, Marlowe for story arc and pacing and Manuscript AI for structure and readability chapter by chapter.

In authors' own words

What authors said after reading their report

250+

Manuscripts Analyzed

20+

Countries

< 10 min

Typical Delivery

14-day

Money-Back Guarantee

Better than expected

The report was very thorough and insightful, and honestly much better than I expected.

Yaprak Sapanli Gorur
What Now? From Autopilot to a Life You Choose · Self-help

Detailed, comprehensive, lots to act on

I was quite impressed with the detail and suggestions. The review is very comprehensive with lots to work through.

Gareth Little-Hales
Drive More Pay Less

The analysis was certainly worth it… I would definitely use your service again!

Mason Peterson
Realizing Salvation: Your Guide to Understanding & Applying the Gospel · Christian non-fiction
Self-publisher

Read every review in full →

When to choose Marlowe instead

  • You write fiction. Marlowe is built for it, and Manuscript AI doesn't analyze fiction at all.
  • You want your story mapped against beat sheets such as Save the Cat or the Hero's Journey.[1]
  • You'll run several reports a month: a subscription brings Marlowe's cost down to $3–5 a report.[1]
  • You want marketing material too. Marlowe's Market Fit report produces comparable titles, book descriptions and keywords.[2]

What Manuscript AI doesn't do

  • It doesn't analyze fiction.
  • It doesn't edit your text: there are no tracked changes or line edits in your manuscript.
  • It doesn't check facts or verify your citations.
  • It's an AI report, not a human editor's judgment, and there's no follow-up call.
  • It accepts Word documents (.docx) up to 16 MB only.

Questions

Is Marlowe good for non-fiction?

It's built for fiction. Authors A.I. says Marlowe can read non-fiction, including memoir and biography, but that its real expertise is fiction, and its analysis centers on plot, characters and story structure. For prescriptive or argument-led non-fiction, a tool built for non-fiction is a better fit.

How much does Marlowe cost?

Marlowe Basic is free. A single Marlowe Pro report costs $29.95; a subscription is $19.95 a month for four reports or $159 a year for 48. Authors A.I. doesn't offer refunds.

Which is cheaper, Marlowe or Manuscript AI?

For one report, Manuscript AI ($19) costs less than Marlowe Pro ($29.95). If you need four or more reports a month, Marlowe's subscription works out cheaper per report. Choose by genre first: Marlowe for fiction, Manuscript AI for non-fiction.

Find out what your manuscript needs, today

$19 for a non-fiction manuscript of any length. Your report usually arrives in under 10 minutes. Not satisfied? Ask within 14 days for a full refund.

Get my report – $19See a sample report

250+ manuscripts analysed for authors in 20+ countries

Sources and method

Prices are what each provider's own pages showed a US visitor on October 15, 2026, in US dollars, excluding sales and limited-time offers. Worked costs are for a 60,000-word non-fiction book. Where a provider's pages disagree with each other, we quote its main product or pricing page.

Prices and features change. If something here is out of date, tell us and we'll correct it. Product names are trademarks of their owners; Manuscript AI isn't affiliated with any of them.

  1. [1]Authors A.I., FAQ, updated October 12, 2026. Accessed October 15, 2026.
  2. [2]Authors A.I., Marlowe Pricing, updated October 6, 2026. Accessed October 15, 2026.
  3. [3]Authors A.I., Terms, updated April 2, 2026. Accessed October 15, 2026.
  4. [4]Authors A.I., Marlowe Pro, updated October 6, 2026. Accessed October 15, 2026.
  5. [5]Authors A.I., Marlowe Basic, updated October 6, 2026. Accessed October 15, 2026.
  6. [6]Authors A.I., Privacy Policy, updated April 2, 2026. Accessed October 15, 2026.

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