— Books, blogs, newsletters and papers —
Publish anywhere, in your voice
Human-quality translation of your book, blog or paper, for a fraction of a translator's fee.
- Translated, not rewritten
- Same voice on page 1 and 300
- You approve every line
No card requiredYour work never trains AIFirst 5 pages free
Sofii w końcu się udało. Po wielu semestrach dzielenia pokoi w akademiku z obcymi ludźmi, którzy zostawiali brudne naczynia w zlewie i puszczali muzykę o nieludzkich porach, wywalczyła sobie jedynkę. Własna przestrzeń. Własny grafik. Własna błoga prywatność, której nikt nie zakłócał.
Trwało to tylko jedno lato.
— Och! Przepraszam, przepraszam! — powiedziała nieznajoma angielskim z akcentem, najwyraźniej tak samo zaskoczona jak Sofia. — Chyba… to mój pokój? Numer 811?
Built for work you answer for
Private by default
Your text is never used to train AI, not by us and not by any provider we use, and it stays out of our logs. Delete your account and your text is deleted with it.
How we handle dataSecurity you can check
Hosted in Germany, in Hetzner’s ISO 27001-certified data center. Every sub-processor is listed, and a DPA is one email away.
All sub-processorsGive it context
Glossaries, styleguides, translation memory and per-string notes go with every request. You set them up once per project.
GlossariesYou’re the human in the loop
The AI drafts; you decide. Review every change side by side, keep or revert it, and send a review link when a client needs to look.
Review linksAPI, MCP and webhooks
The full API on Starter and Pro. Connect Claude or another AI assistant over MCP, or start runs from your own tools.
Developer guideSomething bigger?
Large catalogs, custom workflows, a DPA for procurement. Transept stays self-serve; write to us for the rest.
[email protected]What do you write?
- Use caseTranslate your book with AI without losing the voice→A character glossary that holds for 300 pages, a styleguide built from your own chapter, and alternatives for every line of dialogue. For…
- Use caseTranslate the next post without losing your voice→Long-form writing lives or dies on voice. Translate your post with a styleguide built from your own writing, pick between alternatives for…
- Use caseTranslate your paper or thesis with your terminology intact→For journal articles, master’s and PhD theses, conference papers, grant proposals, and monographs. A glossary holds your field’s terms from…
From draft to any language, in one workflow
I.Drop in your draft, see it translated
Upload a DOCX, EPUB, Markdown or plain-text file, import a page from Notion, or paste a chapter. Headings, lists and formatting carry over, the translation sits beside your text, and an EPUB goes back out as the same e-book.
II.A glossary for the names that matter
Character names, places, invented words, the terms of your field. Pin them once, or let Transept suggest them from your text, and every chapter, post and language uses the same form, from page 1 to page 500.
III.A styleguide that holds your tone, sentence by sentence
Build it from a few pages you already like: sentence rhythm, register, how your dialogue sounds. Every translation and every rewrite follows it, so when you ask for "more punch" or "keep the metaphor", the result still sounds like you.
IV.Literess flags what flattens your tone
A literary editor at your side: she reads the translation, finds where the tone has gone flat, and leaves notes on the blocks that need another pass before you publish.
V.Review with your editor or a native reader
Send a link. Your editor or reader opens the translation in a clean reading view and comments on any sentence, without creating an account. You reply and resolve threads in the same place, with no files emailed back and forth.
Three ways to translate a novel
| Route | What you pay | How long | What you get |
|---|---|---|---|
| A literary translator | €6,000–€12,000 | 4–5 months, full time | One skilled person's rendering of your book |
| AI on its own | Free to a few hundred euros | Hours | A draft: names drift, lines go missing, and the prose turns literal |
| Transept, with you reviewing | About €79 (the Pro plan for a month), or about €158 with Pro mode for the prose | Hours for the draft, then your read-through | A draft that keeps your names and voice, proofread against the source, with every line approved by you |
Transept’s price covers translation, a proofread against the source and a check of every name: about 117,000–171,000 credits for this book in Standard mode, 297,000–351,000 in Pro mode. The app shows the exact price before every run.
Translator rates and timelines: What it costs to translate a novel. Try your own word count in the cost calculator.
Simple pricing
Every plan comes with monthly credits. You spend them only on AI work, at the price each action shows before you click. No sales call and no contract: start free and add a credit pack whenever you need more.
One credit covers one source word in Standard mode. Pro mode uses a more capable model and costs 3 credits per source word. Chinese and Japanese source text is counted per character. Manual edits, exports, comments and translation memory are free: you spend credits only when AI translates, rewrites or checks your text, or reads a document to build a glossary or styleguide. Every paid action shows its price on the button before you click. See the price list.
Free
Always freeTo try your first pages
Unlimited users
Translated and proofread in Standard mode.
- Standard quality: fast, accurate, faithful
- Translation memory: your past translations, reused to keep new ones consistent
- Workflows: chain translation, proofreading, and checks into one run
- Glossary, styleguide, QA, import / export: all included
- Notion, Drive, TMX / XLIFF: import, export, and bring your own memory
- 50 languages: from Spanish to Tagalog
- Batch translation of whole documents
- 10 lifetime messages with Literess: your AI literary editor, who remembers your projects and preferences
- No card required
Starter
For a book in progress
Unlimited users
- Pro mode: a more capable model for nuance, 3 credits per source word
- Unlimited Literess: your AI literary editor, who drafts, proofreads, and sets things up for you
- API, MCP & webhooks: automate runs, or let AI assistants work in your account
- Teams: invite anyone for free; add €29 seats to fund a shared credit pool (60,000 credits a month each)
- Top up anytime: pack credits never expire
Pro
For higher volumeFor a series or several languages
Unlimited users
- Over 3× Starter’s credits: headroom for batch work and full catalogs
- Priority support: a direct line and faster replies
- Predictable bill: most months need no extra credit packs
Prices are in euros and exclude VAT. If VAT applies to your purchase, checkout shows it before you pay, and a business with a valid EU VAT ID pays the net price under reverse charge. You can buy credit packs on any plan, including Free: 30,000 credits for €19, 100,000 for €55 or 300,000 for €149. Pack credits never expire. Creating a team and inviting people is free. To share credits, add two or more seats: each seat adds its plan’s monthly credits to the team’s pool, all on one invoice. Cancel anytime and keep your plan until the end of the period you’ve paid for. We give refunds for faults on our side that we can’t fix and for billing mistakes, and EU consumers can withdraw within 14 days and get back the unused part.
Estimate the cost of your next project
- Credits used50,000 of 60,000 included on Starter
Nothing could translate what we wrote — so we built what could
Two writers, one problem.
— Vitalii.I wrote 120,000 words of satirical romance fantasy: mages drowning in debt, a multiverse economy that makes Wall Street look ethical, and a love story tangled up in all of it.
— Mariia.I write semi-fictional stories about real people, built around how it felt. Most of the people I wrote about were foreigners. We met in English, spoke in English, lived those moments in English. So I wrote them that way too.
Vitalii VlasiukCo-founder
Mariia IvakhnenkoCo-founder
“But I sometimes wonder what version of them I missed by not writing them in their language.”Mariia
— Vitalii.The same flatness hit me from the other side. Every tool I tried preserved the words but killed the voice. Tone, rhythm, wit, emotional texture: nothing held. It all came back flatter than it went in.
— Both of us.So we did what we know how to do. We read the machine-translation papers. We benchmarked Claude, GPT, Gemini, and a handful of open models on the same 50-page chapter and judged them on accuracy, tone, and whether the satire still landed. None of them held all three; each failed in a different way. So we built the tool we wished had existed when we started.
We still use it every day. This site is localized in Transept: every change to its German and Chinese pages goes through the same workflow you'd use.
Built by two writers for their own writing
Mariia Ivakhnenko · Co-founder
CRM and lifecycle marketing manager at Invity, running onboarding, retention and win-back for over 30,000 fintech users; before that, lifecycle marketing at Snov.io and product at Litero AI. Two degrees in English language and literature. Builds product features and runs marketing, CRM and communications at Transept. LinkedIn →
Vitalii Vlasiuk · Co-founder
Senior machine learning engineer at SumUp, building AI assistants and the tests that keep them accurate; before that, LLM evaluation for Deloitte and AI engineering at Litero AI. A degree in language and literature. Builds the AI behind Transept. LinkedIn →
FAQ
- Write a translation styleguide once, covering your tone, your rules and the quirks you want kept. Every translation in every language follows it, and when you regenerate a sentence, both the styleguide and your direction apply.
- No. Translate first and add character names or field terms as you notice them, or let Transept suggest a glossary from your text and keep the entries you approve. For a one-off post you can skip it.
- Yes, from a 500-word post to a 300-page manuscript or a thesis. Long pieces keep their chapter and section structure, and you can still work on a single sentence where it has to land.
- Yes. Upload the EPUB and every chapter is imported in reading order, along with the book's title and table of contents. Export as EPUB returns the same book with your translation inside: the cover, images, fonts, styles and footnote links stay as they were, and the book declares its new language. Use a DRM-free copy, such as the file your formatting software exported.
- Yes, if you publish on KDP. Amazon's content guidelines count a translation made with an AI tool as AI-generated, even after substantial edits, and ask you to declare it when you publish or republish. KDP accepts AI-generated books; it asks you to say so. Other retailers and publishers set their own rules, so check each one before you upload.
- It might, and that's a reason to declare it rather than hide it. We don't build Transept to get past AI detectors: they guess, they also flag text people wrote, and no tool can promise how they'll score a book. What we build for is what readers notice: names that hold, dialogue that sounds like your characters, and lines you've read and approved.
- You do. Transept claims no ownership of your text or its translation, and your work is never used to train AI. How far copyright protects an AI-assisted translation is a separate question: in the US, the parts a person wrote are protected and material generated purely by AI is not, so your edits count. This is general information, not legal advice.
- Connect your Notion workspace, search for the page or database you want, and import it as a translation document. When you’re done, export the translation back to Notion with the same structure, ready to schedule and publish.
- Use Pro mode when tone and nuance matter more than speed. It uses a more capable model and costs 3 credits per source word. Standard is fine for most blog posts and newsletters; for fiction, essays or anything with a tricky tone, Pro mode is worth it.
- Free gives you 2,500 credits a month, about 5 pages translated and proofread, which is enough to try everything. Starter, at €29/mo for 60,000 credits, suits regular publishing: about 200 pages in Standard or 65 in Pro mode. Pro, at €79/mo for 200,000 credits, is for higher volume. Any plan, Free included, can add credit packs: Small (€19 for 30K), Medium (€55 for 100K) or Large (€149 for 300K). Pack credits don’t expire.
3 languages, 2 AI detectors
We ran AI translations of our own novel, between Ukrainian, English and Chinese, through two popular AI detectors. A detector asks who wrote a text, and a translation keeps its author; Amazon asks how the translation was made. So whatever a detector says, declare an AI translation.
What the detectors saidFeatured on
