{"dataset":"Infinite Library catalog statistics","url":"https://www.infinitelibrary.ai/research/ai-book-statistics","license":"https://creativecommons.org/licenses/by/4.0/","snapshotDate":"2026-09-06","catalogSince":"2025-10","totals":{"booksInDatabase":5711,"finishedBooks":3511,"publicFinishedBooks":2498,"authors":2383,"withIsbn":3486,"withCover":3509,"withAudiobook":226,"readerViews":41811,"reviews":78,"ratedBooks":73,"averageRating":4.64,"finishedByYear":[{"year":2025,"books":936},{"year":2026,"books":2303}]},"wordCounts":{"books":3197,"totalWords":57155907,"mean":17878,"p10":4048,"p25":7075,"median":15627,"p75":25454,"p90":31127,"longest":208843},"lengthBands":[{"band":"Short story","range":"under 7,500 words","books":840,"share":26.3},{"band":"Novelette","range":"7,500 – 17,499 words","books":884,"share":27.7},{"band":"Novella","range":"17,500 – 39,999 words","books":1377,"share":43.1},{"band":"Short novel","range":"40,000 – 69,999 words","books":63,"share":2},{"band":"Novel","range":"70,000 – 99,999 words","books":17,"share":0.5},{"band":"Long novel","range":"100,000 words and up","books":16,"share":0.5}],"chapters":{"booksWithChapterCount":536,"medianChapters":2,"meanChapters":3.6,"p10Chapters":1,"p90Chapters":5,"wordsPerChapter":{"books":326,"p25":2786,"median":4256,"p75":5642}},"genres":{"booksWithGenre":3140,"genres":29,"subcategories":122,"top":[{"genre":"Romance","books":901,"share":28.7,"medianWords":21080},{"genre":"Fiction (general)","books":402,"share":12.8,"medianWords":16087},{"genre":"Science Fiction","books":352,"share":11.2,"medianWords":19227},{"genre":"Fantasy","books":348,"share":11.1,"medianWords":23046},{"genre":"Young Adult","books":236,"share":7.5,"medianWords":21445},{"genre":"Mystery & Thriller","books":157,"share":5,"medianWords":18803},{"genre":"Non-Fiction","books":130,"share":4.1,"medianWords":11125},{"genre":"Children's","books":114,"share":3.6,"medianWords":8451},{"genre":"Horror","books":103,"share":3.3,"medianWords":15497},{"genre":"Self-Help","books":81,"share":2.6,"medianWords":7185},{"genre":"Business","books":74,"share":2.4,"medianWords":5038},{"genre":"Biography","books":47,"share":1.5,"medianWords":13733}]},"languages":{"booksWithLanguage":3463,"languages":32,"top":[{"language":"English","books":3254,"share":94},{"language":"French","books":66,"share":1.9},{"language":"Spanish","books":41,"share":1.2},{"language":"Chinese","books":16,"share":0.5},{"language":"Portuguese","books":16,"share":0.5},{"language":"Arabic","books":13,"share":0.4},{"language":"Italian","books":10,"share":0.3},{"language":"Indonesian","books":9,"share":0.3},{"language":"Russian","books":6,"share":0.2},{"language":"Polish","books":4,"share":0.1}]},"bindery30d":{"from":"2026-08-07","to":"2026-09-05","booksStarted":210,"writingTurns":1505,"publishedToStorefront":16,"printOrders":19},"appStore":{"rating":4.9,"ratingCount":41,"version":"5.7","released":"2026-09-05"},"methodology":["Source: the Infinite Library catalog database and Bindery's daily usage metrics, aggregated read-only on 2026-09-06. No individual book, author or reader is identified; every figure is a count, share, or distribution statistic.","\"Finished\" means the book's generation completed (status completed or published). Drafts, paused and failed runs are counted in the database total only.","Word-count statistics exclude 314 finished entries under 500 words (stubs and test runs) so that shares describe real books. Length bands use the SFWA/Nebula cut-offs (short story under 7,500; novelette to 17,499; novella to 39,999; novel from 40,000), with the novel range split at 70,000 and 100,000 words.","Chapter figures cover only the books that record a chapter count (536) and, for words per chapter, both counts (326); most finished books were drafted as long parts rather than short chapters, which is why the median chapter count is low while the median chapter is long.","Genre and language are as recorded on each book. Language labels were normalised (e.g. \"en\", \"UK English\" → English). Percentages are of the books carrying that field, not of all finished books.","Bindery activity covers the 30 days before the snapshot from the studio's daily metrics; \"books started\" counts new projects, \"writing turns\" counts completed compose runs, \"published\" counts books that opened a public storefront, \"print orders\" counts paid print checkouts.","The App Store rating is the US storefront value returned by Apple's public lookup API on the snapshot date."]}