Each one, on its own terms.
TranslateABook
The most serious of the book translators and the only one that lets you bring something of yourself. Standard and Pro translate in minutes; Author reads the whole book first, drafts an editable “translation guide” (names, terms, tone, audience) and proofreads. Two add-ons at about €13 each: custom instructions, and “style copying” from pasted passages. For a 100,000-word DOCX its calculator showed roughly €9, €25 to 28 and €129 to 143; InDesign files cost about double.
What it does not do: keep anything between books, learn from your edits (you get a file back and edit it elsewhere), or show which of your samples shaped a given paragraph. Its own anchor is worth repeating: a human would charge about €7,500 and take five weeks.
The closest competitor. If you want a file back and have no past translation, it is the one to try.
BookTranslate.ai
booktranslate.ai · per book, per language · “from ~$390”; tiers reported at $549 (reviewed) to $3,900 (publication), unverified
The premium anchor of the field. Five passes of translation and refinement, guided by a “literary blueprint” the system builds from your manuscript: themes, character voices, tone. A glossary and an editorial suite with AI suggestions. It takes nothing of yours as a voice source; the voice it preserves is the one it infers from the book, which is the author's, not the translator's. Aimed at authors and presses who would otherwise pay a human, and priced accordingly: fifteen to a hundred and fifty times what we charge, for a draft that reads only the manuscript.
The premium anchor. The author's voice, inferred; not yours, supplied.
Novo Translator
novotranslator.com · $2 per 100k characters, or $12/month for 1M credits · TXT, EPUB, DOCX
Whole-novel context: reads the book to detect genre, era and tone, builds a glossary of names and places you can edit, translates with consistency across chapters. A custom style guide is a paid add-on. A free preview of the opening before you commit. Built for web-novel readers and self-publishers who want cheap and consistent.
Cheap and consistent. No voice of yours in it.
Luman Translation (GlobeScribe)
globescribe.ai → Luman Technology · $100 per book per language on the pre-acquisition page; current tiers not shown
Launched 2025 by the founders of a fiction press, flat-priced, delivered within a day, and acquired into a “manuscript intelligence” platform in 2026. The page discloses no style input at all. Its price is the useful fact: $100 for a novel is what a small press has already been willing to pay for an unsteered AI draft.
A price anchor, not a voice tool.
BookTranslator.ai, Immersive Translate, Rask
booktranslator.ai from $5.99 per 100k words (unverified) · immersivetranslate.com free tier, Pro ≈ $9.99/month · rask.ai free tool
Upload an EPUB, pick a language, download an EPUB with the layout intact; Immersive adds bilingual side-by-side reading and lets you choose among 18 engines; Rask is a free web tool that says it “preserves your voice” without taking anything of yours. All three are reading tools: for a reader who wants a book they can't otherwise read, they are the right answer. None has any notion of a translator's voice.
For reading, not for publishing.
DeepL, Phrase, Smartcat
subscriptions from ≈ $9/user/month (DeepL) and $27/month (Phrase) to $1,200+/year (Smartcat) and ≈ $1,245/month (Phrase Custom AI)
The professional translation stack. All three accept a translation memory (.tmx) built from your past work and a glossary; DeepL's newer plans add “Style Rules”, tone instructions typed as text; Phrase Custom AI will train an engine on your cleaned memories, for a team-sized fee. A memory is precise where it hits and silent where it doesn't: it matches the same sentence, or a close one, and a novel repeats sentences about as often as a person does. Good at contracts and manuals; not built to carry a voice into sentences it has never seen.
Sentence memory, not voice. Excellent for what it is for.
Lilt and Lara (ModernMT)
Lilt: enterprise quotes · Lara: reported $9.99 to €25/month plus usage, unverified · ModernMT retires end of 2026
Adaptive machine translation: the engine learns from each correction you confirm, so the next similar segment benefits. This is the closest thing in the industry to “it learns from your edits”, and it has been sold to enterprises for years. It lives inside a CAT tool, segment by segment, and is priced and shaped for localisation teams rather than for a translator with one novel and a past book.
The right idea, for a different customer.
Nuanxed, and a human translator
quotes only · humans in the loop · weeks, not minutes
Nuanxed drafts with AI and finishes with professional translators, editors and proofreaders, for publishers, at around fifty books a month by their own account. A freelance literary translator does the same by hand; the only sourced figure we have for a novel is TranslateABook's ≈ €7,500 and five weeks. Both give you a voice: theirs. Own Words is not a replacement for either; it is the draft a translator starts from, in their own register, at a price that leaves the rest of the fee for the part only a person can do.
The benchmark, not the competition.