AI humanizer and detector that rewrites AI-generated drafts into natural writing, checks them with AI scores, and offers a paid API.
Freemium
Authors A.I.
Analytical AI for novelists: Marlowe reports on plot, pacing and market fit, comparing your manuscript with bestsellers without writing for you.
What is Authors A.I.?
Authors A.I. makes Marlowe, an analytical AI that reads a fiction manuscript and reports on it instead of generating text. Marlowe Pro works like a developmental editor, covering plot, pacing, characters, dialogue, themes, structure and key revisions. The Market Fit report looks at positioning, with 20 comparable titles, elevator pitches, retailer-ready descriptions, keywords for Amazon KDP and ads, and a market readiness score across 7 dimensions. Results appear in an interactive Author Dashboard where you can compare your book with bestsellers, and you can rerun a report after each rewrite. The company says uploads are private, are not used to train AI models, and can be deleted at any time. Marlowe Basic is free. Marlowe Pro is $29.95 as a single report, $19.95/month for 4 credits, or $159/year for 48 credits, and the Pro plus Market Fit bundle is $39.90. The company was founded by bestselling authors and data scientists in 2020.
Use cases
- Get developmental feedback on a novel draft
- Compare plot and pacing with bestsellers
- Find comparable titles and keywords for a book
- Check market readiness before publishing
- Track improvement across rewrites
- Write retailer descriptions and ad copy ideas
Who it's for
Why use Authors A.I.
- Get editor-style feedback on a draft in minutes, before you pay for a human edit.
- Keep full creative control, since the AI analyses your book rather than generating text.
- Take your draft to market with comps, keywords, pitches and a readiness score from the Market Fit report.
- Rerun reports after each revision to see how the manuscript changes.
- Know your privacy position: the company states uploads are not used for model training and can be deleted.
Authors A.I. features
- Marlowe Pro developmental report on plot, pacing, characters, dialogue and structure
- Overall assessment, author voice analysis and key revision priorities
- Story structure guide and checklist
- Market Fit report with 20 comparable titles and 5 elevator pitches
- 3 retailer-ready book descriptions and marketing blurbs for ads, TikTok and email
- Amazon KDP and ad-targeting keywords
- Market readiness score across 7 dimensions
- Interactive Author Dashboard that compares your book with bestsellers
- Free Marlowe Basic report on about a half-dozen areas
How to get started with Authors A.I.
- Create an account and upload your fiction manuscript.
- Choose Marlowe Basic for free, or run a Pro, Market Fit or bundle report with a purchase or subscription credit.
- Open the interactive Author Dashboard to read the assessment and compare your book with bestsellers.
- Revise the manuscript using the key recommendations and story structure guide.
- Rerun the report after your rewrite, and use the Market Fit output for pitches, descriptions and keywords.
Authors A.I. limitations
- Built for fiction; anthologies, series and combined manuscripts do not work correctly in one upload
- Analysis only: Marlowe never writes or rewrites your text
- Subscription credits do not roll over and refresh each billing period
- Marlowe Basic covers only about a half-dozen areas
Authors A.I. pricing
Yes, Authors A.I. has a free plan. Paid plans start at $19.95 per month, according to the official pricing page on .
Authors A.I. plans
Marlowe Basic
Free
- Feedback on about a half-dozen areas
Marlowe Pro report
$29.95
one-time report
- Plot and pacing analysis
- Character, conflict and theme analysis
- Story structure guide
- Key recommendations
Market Fit report
$29.95
one-time report
- 20 comparable titles
- 5 elevator pitches
- 3 retailer-ready descriptions
- Market readiness score
Bundle: Pro + Market Fit
$39.90
both reports for one manuscript
- Full Marlowe Pro report
- Full Market Fit report
Monthly plan
$19.95/month
- 4 credits every month
- Credits refresh each billing period
- Access to every Marlowe report type
Annual plan
$159/year
- 48 credits
- Credits do not roll over
- Access to every Marlowe report type
Plans as listed on the official pricing page on . Prices can change and may vary by country or exclude tax. Check the official pricing page.
Authors A.I. alternatives
The main Authors A.I. alternatives listed on Debuly are Grammarly, Sudowrite, Midgen, Remagine AI, Copyhat and Copymatic. The table compares pricing and platforms; order is A–Z.
| Tool | Pricing | Starting price | Platforms |
|---|---|---|---|
| Authors A.I. | Freemium | $19.95/mo | Web |
| Copyhat | Pricing unknown | — | — |
| Copymatic | Free trial | $19/mo | Web, Chrome extension, API |
| Grammarly | Freemium | $12/mo | Web, iOS, Android |
| Midgen | Freemium | $15/mo | Web |
| Remagine AI | Freemium | $20/mo | Web |
| Sudowrite | Free trial | $10/mo | Web, Mobile app |
Copyhat
iOS writing assistant that helps you draft emails, messages, sales copy, conversation openers and thoughtful questions.
Copymatic
AI writing tool for blog posts, ad copy, product descriptions and website copy, with unlimited words on every plan.
Free trialVisit Copymatic (official site)
Grammarly
AI writing assistant that fixes grammar, adjusts tone, rewrites sentences and drafts text in the apps and sites where you write.
FreemiumVisit Grammarly (official site)Midgen
AI writing platform with an article writer, text humanizer, AI detector and a novel-writing editor.
FreemiumVisit Midgen (official site)Remagine AI
AI writing tool with 200+ templates for blog posts, ads, emails and other marketing copy.
Sudowrite
AI writing app for fiction authors that drafts, expands, rewrites and critiques scenes while tracking your story details.
Free trialVisit Sudowrite (official site)
Authors A.I. FAQ
How much does Authors A.I. cost?
A single Marlowe Pro or Market Fit report costs $29.95, and the Pro plus Market Fit bundle is $39.90. Subscriptions cost $19.95/month for 4 credits or $159/year for 48 credits.
Is there a free plan for Authors A.I.?
Yes. Marlowe Basic is free and gives feedback on about a half-dozen areas. Pro and Market Fit reports are paid.
What plans does Authors A.I. have?
You can buy single reports, the Pro plus Market Fit bundle, a monthly plan with 4 credits, or an annual plan with 48 credits. A Pro report uses 1 credit and a Market Fit report uses 2.
Will Marlowe write or rewrite my book?
No. Marlowe is analytical, not generative. It reads and critiques your draft, while you keep full creative control of the text.
Is my manuscript used to train AI?
The company says no. Uploads are not used for model training or fine-tuning, no human sees your work unless you share it, and you can delete your data at any time.
Who is Authors A.I. for?
It is meant for fiction authors, self-published writers and indie publishers who want developmental feedback and market positioning for a novel.
What are alternatives to Authors A.I.?
Alternatives include ProWritingAid, Grammarly, Reedsy editors, Sudowrite and PublishDrive's marketing tools, or hiring a human developmental editor.
Sources & verification
Facts on this page come from the official sources below, each with the date we read it. Written by Debuly; the vendor did not review this page.
| Source | Type | Accessed |
|---|---|---|
| authors.ai/ | official | |
| authors.ai/pricing/ | pricing | |
| authors.ai/faq/ | pricing |
Image credits
- Logo: from authors.b-cdn.net · fetched · Vendor trademark, used only to identify the product; removed on request
- Cover: none collected yet, so a generated tile is shown.
Spot an error? Report an issue with this listing. We also remove a logo or image on the owner's request.
More in Writing 4
All writing toolsAI writing assistant that drafts, fixes, replies to and rewrites text in 40+ languages from an app, keyboard and Chrome extension.
FreemiumAI writing studio for novelists with a Story Engine, knowledge base, grammar checker, editorial feedback and manuscript export.
Freemium
AI writing app for fiction authors that drafts, expands, rewrites and critiques scenes while tracking your story details.
Free trial
