AI Book Writing Statistics 2026
Across 102,854 books created on Inkfluence AI between November 2025 and 15 September 2026, the median AI-written book is 5 chapters and 9,337 words. Non-fiction accounts for 63.7% of what people write and fiction for 36.3%. 40.8% of books are exported at least once, and 15.7% are written in a language other than English. Every figure on this page is counted from production records, not surveyed or estimated, and the full dataset is downloadable below.
Key findings
- ● 102,854 books have been created on Inkfluence AI, counted on 15 September 2026. Jump to the data
- ● Non-fiction is 64% of what people write with AI; fiction is 36%. Jump to the data
- ● The median AI-written book is 5 chapters and 9,337 words, not a 90,000-word novel. Jump to the data
- ● Romance is the longest genre at a median 11,281 words; technical guides the shortest at 2,655. Jump to the data
- ● 40.8% of books are exported at least once. Non-fiction finishes far more often than fiction. Jump to the data
- ● 15.7% of AI-written books are not in English, across more than 30 languages. Jump to the data
- ● 76.9% of books start from a written prompt, and the median prompt is 352 characters. Jump to the data
The numbers, ready to quote
Each block is self-contained: the figure, what it means, the sample it came from and the date it was counted. Take any one of them without needing the rest of the page.
Authors have created 102,854 books on Inkfluence AI.
Sample: Full population. Counted 15 September 2026.
Authors have created 102,854 books on Inkfluence AI. Inkfluence AI, 15 September 2026.
The median AI-written book is 5 chapters long.
Sample: 81,671 books. Counted 15 September 2026.
The median AI-written book is 5 chapters long. Inkfluence AI, 15 September 2026.
The median AI-written book is 9,337 words long.
Sample: 12,647 books with a stored word count. Counted 15 September 2026.
The median AI-written book is 9,337 words long. Inkfluence AI, 15 September 2026.
Non-fiction accounts for 63.7% of books written with AI.
Sample: 93,511 classified books. Counted 15 September 2026.
Non-fiction accounts for 63.7% of books written with AI. Inkfluence AI, 15 September 2026.
40.8% of AI-written books are exported at least once.
Sample: Full population. Counted 15 September 2026.
40.8% of AI-written books are exported at least once. Inkfluence AI, 15 September 2026.
Practical non-fiction is finished at roughly twice the rate of fiction: 62.0% for playbooks against 28.6% for general fiction.
Sample: Full population by genre. Counted 15 September 2026.
Practical non-fiction is finished at roughly twice the rate of fiction: 62.0% for playbooks against 28.6% for general fiction. Inkfluence AI, 15 September 2026.
15.7% of AI-written books are written in a language other than English.
Sample: Full population. Counted 15 September 2026.
15.7% of AI-written books are written in a language other than English. Inkfluence AI, 15 September 2026.
The median prompt behind an AI-written book is 352 characters, about three sentences.
Sample: 79,135 books with a prompt. Counted 15 September 2026.
The median prompt behind an AI-written book is 352 characters, about three sentences. Inkfluence AI, 15 September 2026.
Cite this page
You are welcome to quote any figure here, in an article, a report or an answer, as long as it is attributed with a link.
Inkfluence AI (2026). AI Book Writing Statistics 2026. Counted 15 September 2026. https://www.inkfluenceai.com/ai-book-writing-statistics
The statistics and the CSV files on this page are published under a Creative Commons Attribution 4.0 licence, so you may reuse, republish and adapt them, including commercially, as long as you credit Inkfluence AI with a link. The page text, images and brand are not covered.
Download the data
No email, no form. Both files carry the sample size, the unit and the counting date for every row.
How many books have been written with AI?
102,854 books had been created on Inkfluence AI as of 15 September 2026, counted across the full platform with no sampling. Monthly creation grew from 219 books in December 2025 to 22,669 in July 2026.
Nobody can credibly count every AI-written book in the world. Most platforms publish nothing, and AI detection run on finished text is unreliable enough that the major studies hedge it. What can be counted honestly is one platform in full, which is what this page does. For the wider market, the most-cited estimate is from the National Bureau of Economic Research, which put the share of books published in 2025 and sold on Amazon that contain AI-generated text at roughly half, up from 23% in 2023.
| Month | Books created |
|---|---|
| Dec 2025 | 219 |
| Jan 2026 | 246 |
| Feb 2026 | 846 |
| Mar 2026 | 4,354 |
| Apr 2026 | 11,176 |
| May 2026 | 14,870 |
| Jun 2026 | 19,158 |
| Jul 2026 | 22,669 |
| Aug 2026 | 18,301 |
September 2026 is excluded from the chart because the month was incomplete when the count was taken. Counted 15 September 2026.
What kind of books do people write with AI?
Non-fiction is 63.7% of what people write with AI and fiction is 36.3%, across 93,511 classified books on Inkfluence AI as of 15 September 2026. The two largest single categories are almost exactly the same size: general fiction at 17.8% and practical how-to guides at 17.6%.
The interesting part is not the split, it is what appears in the non-fiction half. Workbooks, study guides, course companions, devotionals and 30-day challenges together outnumber romance. None of those formats has a category in Bowker's industry taxonomy, which is why they are invisible in every other publishing statistic you will read. They are the shape of a working document rather than a book you buy in a shop.
| Book type | Books | Share |
|---|---|---|
| Fiction (general) | 18,344 | 17.8% |
| Practical how-to guides | 18,093 | 17.6% |
| Romance | 7,613 | 7.4% |
| Personal development | 7,434 | 7.2% |
| Exploratory non-fiction | 4,057 | 3.9% |
| Children's fiction | 3,987 | 3.9% |
| Workbooks | 3,610 | 3.5% |
| Study guides | 3,035 | 3% |
| Course companions | 2,684 | 2.6% |
| Cookbooks | 2,653 | 2.6% |
| Devotionals | 2,496 | 2.4% |
| Health guides | 2,339 | 2.3% |
Writing one of these? The book generator covers 33 formats, and the workbook generator handles the answer-space formats that do not exist in standard publishing categories.
How long is the average AI-written book?
The median AI-written book is 5 chapters and 9,337 words. Chapter counts come from 81,671 books and word counts from the 12,647 books carrying a stored word count, all measured on 15 September 2026. The mean chapter count is 7.5, pulled up by a long tail: 3.4% of books run past 30 chapters.
This is the number most likely to surprise anyone who has read a writing-advice page. The standard advice figure for a novel is around 90,000 words. Measured against a real corpus, 76.1% of AI-written books have five chapters or fewer and only 6.9% pass 70,000 words. Most people using AI are not writing novels. They are writing short, purposeful non-fiction.
| Band | Books | Share |
|---|---|---|
| 1 to 5 chapters | 62,129 | 76.1% |
| 6 to 8 chapters | 10,846 | 13.3% |
| 9 to 12 chapters | 1,824 | 2.2% |
| 13 to 20 chapters | 2,627 | 3.2% |
| 21 to 30 chapters | 1,430 | 1.8% |
| 31 or more chapters | 2,815 | 3.4% |
| Band | Books | Share |
|---|---|---|
| Under 5,000 words | 1,952 | 15.4% |
| 5,000 to 10,000 | 5,519 | 43.6% |
| 10,000 to 20,000 | 3,018 | 23.9% |
| 20,000 to 40,000 | 644 | 5.1% |
| 40,000 to 70,000 | 643 | 5.1% |
| 70,000 or more | 871 | 6.9% |
Fiction runs longer than non-fiction, but not by as much as you would think. Median fiction length is 10,469 words across 5,422 books with a stored count; median non-fiction is 8,498 across 7,228. The gap is about two thousand words, not the tenfold difference the novel-versus-guide framing implies.
How long is a book in each genre?
Romance produces the longest AI-written books at a median 11,281 words, followed by biography and memoir at 10,487 and general fiction at 10,426. The shortest are technical guides at 2,655 words and study guides at 4,422. Measured on 15 September 2026.
Words per chapter is the more useful number if you are planning a book, because chapter count is the lever most tools actually give you. It ranges from 2,256 in romance down to 531 in technical guides, a fourfold spread. A ten-chapter romance and a ten-chapter technical guide are not the same size of undertaking.
| Genre | Books | Median words | Words per chapter | Exported |
|---|---|---|---|---|
| Fiction (general) | 18,344 | 10,426 | 2,085 | 28.6% |
| Practical how-to guides | 18,093 | 9,206 | 1,841 | 50.8% |
| Romance | 7,613 | 11,281 | 2,256 | 30.1% |
| Personal development | 7,434 | 7,744 | 1,549 | 55.4% |
| Exploratory non-fiction | 4,057 | 8,503 | 1,701 | 46.4% |
| Children's fiction | 3,987 | 7,791 | 1,558 | 38.3% |
| Workbooks | 3,610 | 7,188 | 1,438 | 47.8% |
| Study guides | 3,035 | 4,422 | 884 | 52% |
| Course companions | 2,684 | 8,863 | 1,773 | 56% |
| Cookbooks | 2,653 | 5,136 | 1,027 | 45.7% |
| Devotionals | 2,496 | 5,533 | 1,107 | 49.4% |
| Health guides | 2,339 | 8,778 | 1,756 | 57.6% |
| List books | 1,707 | 8,118 | 1,624 | 52.1% |
| 30-day challenges | 1,554 | 5,167 | 1,033 | 60.6% |
| Biography and memoir | 1,527 | 10,487 | 2,097 | 32.4% |
| Technical guides | 1,473 | 2,655 | 531 | 51.7% |
| Playbooks | 1,080 | 9,861 | 1,972 | 62% |
| Lead magnets | 906 | 7,663 | 1,533 | 37.5% |
| Travel guides | 625 | 9,758 | 1,952 | 47.8% |
Genres with at least 500 books and at least 30 stored word counts. Median word counts are drawn from the word-count subset shown in the downloadable CSV; book counts and export rates use the full population for that genre. Counted 15 September 2026.
Planning a specific genre? See the romance novel writer, the cookbook generator or the children's book creator.
Do people finish the books they start with AI?
40.8% of the 102,854 books have been exported at least once, which is the clearest available proxy for a manuscript someone considered finished. Counted 15 September 2026.
The average hides the finding that matters. Non-fiction gets finished and fiction does not. Playbooks export at 62.0%, social strategy guides at 62.6%, 30-day challenges at 60.6% and health guides at 57.6%. General fiction manages 28.6% and romance 30.1%. A practical guide has a job to do and a deadline attached to it; a novel has neither, and the same pattern shows up in every writing community that has ever counted finished manuscripts.
Export rate by genre, highest to lowest
| Last export format | Books |
|---|---|
| 35,580 | |
| DOCX | 3,995 |
| EPUB | 2,363 |
PDF dominates because most of these books are not products for a store. They are lead magnets, client deliverables and course companions. Of the books that do go to a storefront, 2,085 were published to Gumroad and 413 listed on Etsy directly from the platform, and 937 books have an audiobook recorded.
Want to be in next quarter's numbers?
The median book here took five chapters. The free plan writes five, plus five more every month, with a cover designer and PDF export, and no card.
Start a book freeWhat languages are AI books written in?
15.7% of AI-written books are not in English, spread across more than 30 languages. English accounts for 86,700 of the 102,854 books counted on 15 September 2026.
The order of the non-English languages is worth noting because it does not match the publishing industry's. Indonesian sits level with German, and Bengali and Hindi both appear ahead of languages with far larger traditional publishing markets. AI writing tools reach places the publishing industry measures poorly.
| Language | Books | Share |
|---|---|---|
| English | 86,700 | 84.3% |
| Spanish | 2,352 | 2.3% |
| French | 2,131 | 2.1% |
| Portuguese | 1,968 | 1.9% |
| German | 1,499 | 1.5% |
| Indonesian | 1,496 | 1.5% |
| Arabic | 1,408 | 1.4% |
| Italian | 690 | 0.7% |
| Bengali | 583 | 0.6% |
| Hindi | 579 | 0.6% |
Books can also be translated after they are written, into 59 languages.
How much do people write in the prompt?
76.9% of books begin from a written prompt, and the median prompt is 352 characters, roughly three sentences. Measured across 79,135 books carrying a prompt on 15 September 2026.
Three sentences is the entire brief for most AI-written books. That single number explains a great deal of the complaint that AI drafts read generically: a model given a topic and no specifics will fill the gaps with plausible generalities, because generalities are all it was given. The books that need the least editing are the ones whose prompt carried real examples, a named audience and a point of view. If you want a practical version of that, the outline generator is a free way to see what a fuller brief produces.
Methodology
What was counted. Every book project created on Inkfluence AI, from the first in November 2025 to the count taken on 15 September 2026. This is a full population count, not a sample and not a survey. A script reads the production book records directly and aggregates them; no individual book, title or account is identified anywhere in the output.
What counts as a book. A project created by a user with a book type assigned. Projects are counted whether or not they were finished, which is deliberate, because the completion rate is one of the things being measured.
Chapter counts come from the stored chapter count, or the planned chapter count where a book has not finished generating. 81,671 of the 102,854 books carry one.
Word counts are the weakest figure on this page and we would rather say so. A stored word count exists on 12,647 books, because the field is written when a book is saved in the newer storage format. Word-count medians are therefore drawn from that subset rather than the full corpus, and the subset skews toward more recently edited books. Chapter counts, export rates, language and genre figures use the full population.
Export rate counts books exported at least once in any format. It is a proxy for completion, not a measure of publication. Someone who exports a draft to read it on a tablet counts; someone who finishes a book and never exports it does not.
Genre figures use the book-type blueprint selected or classified at generation. Genres with fewer than 500 books or fewer than 30 stored word counts are excluded from the per-genre table to avoid quoting a median off a handful of books.
Deliberately not published: time from creation to export. The stored timestamps produce a median of about a minute, which is not a credible measure of writing a book, so the field is being treated as unreliable rather than published with a caveat.
Limitations
- This is one platform, not the market. These are statistics about books written on Inkfluence AI. They are not a sample of AI-written books generally, and they are certainly not a sample of publishing.
- The population is self-selected. Everyone counted here chose to use an AI book tool. That selects for people writing short practical non-fiction and against, for example, literary novelists.
- It skews English and skews Western. 84.3% of books are in English, so the language breakdown describes this platform's reach, not global demand.
- Export is a proxy, not a fact. It is the best completion signal available and it is still a proxy.
- The corpus is young and growing fast. More than half of these books were created in the last five months, so any figure here is weighted toward recent behaviour rather than a stable long-run average.
Changelog
- 15 September 2026. First publication. 102,854 books counted. Adds per-genre length and completion, which had not been published before.
Next scheduled recount: December 2026. The page date changes only when the numbers are actually recounted.
Frequently asked questions
How many books have been written with AI? +
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Which genre produces the longest AI-written books? +
Do people finish the books they start with AI? +
What file format do AI authors export? +
Are AI books only written in English? +
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Write any of the formats in this data
Every category counted above has a tool behind it. These are the ones people in the data actually used.
AI Book Generator
Any of 33 formats from one prompt
Audiobook Length Calculator
Word count to finished hours, measured per narrator
AI Novel Writer
Fiction with a story bible and continuity checks
AI Romance Novel Writer
The longest genre in the data
AI Children's Book Creator
Illustrated stories for young readers
AI Picture Book Maker
Consistent characters across spreads
Workbook Generator
Exercises with answer spaces
AI Study Guide Generator
The shortest non-fiction format here
AI Cookbook Generator
Recipe structure and ingredient lists
AI Self-Help Book Writer
Personal development, 7.2% of the corpus
AI Devotional Generator
Daily readings and reflections
AI Health Book Generator
One of the highest completion rates
AI Biography and Memoir Writer
Chronology, family stories, voice
AI Playbook Generator
The most finished format in the data
Lead Magnet Generator
Short gated PDFs for a list
AI Travel Guide Creator
Itineraries and destination guides
AI Course Creator
Course companions and workbooks
AI Audiobook Generator
49 voices, distributor-spec export
AI Book Cover Generator
Covers with a KDP wrap
AI Book Translator
59 languages for a finished book
Book Outline Generator
Free, no sign-up, turns a topic into structure
AI Book Editor
Rewrite, expand, shorten, change tone
Pricing
Free plan, then $9.99 or $19.99 a month
More first-party data and research
Self-Publishing Statistics 2026
Industry output and author income, with every source linked
What People Write With AI
The category study this page grew out of
We Analysed 47,424 AI-Generated Books
The original June 2026 analysis
Best Ebook Niches
Demand research with the method shown
Low-Competition Ebook Niches
Where demand outruns supply
Ebook Trends in 2026
What changed across the year
The State of AI Audiobooks
8,358 chapters analysed
For First-Time Authors
Where most of this corpus starts
For Non-Fiction Authors
The 63.7% majority
For Novelists
The 36.3% who finish least often
For Kindle Publishers
KDP specs and disclosure rules
Learn Hub
Video walkthroughs and guides
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