Compare
Transept vs DeepL for long documents
No cardFirst 5 pages freeYour work never trains AI
Literess, the AI editor in Transept
You: Make Grandma grumpier.
Literess: Done. She doesn’t just say it anymore. She grumbles it. sagte → raunzte
Ask in plain words. You approve every change. Meet Literess →
DeepL has been the default AI translator for serious users since 2017, and for good reason: its quality on a single sentence, especially in DE↔EN or FR↔EN, is excellent. Real translation work is rarely one sentence, though. It’s a 50-page document, a help center with 100 articles, a launch kit going into twelve languages. At that scale the question changes from “is the translation good?” to “does the workflow hold up?”, and Transept is built around that second question. Here’s where DeepL and Transept overlap, where they differ, and how to choose between them, or decide to use both.
Where the two diverge
| Feature | DeepL | Transept |
|---|---|---|
| Single-sentence quality | YesStrong, particularly DE/FR | YesStrong; frontier model |
| Document-level context across pages | Partial | Yes |
| Glossary enforcement | YesAll plans; 5 entries below Team | YesEvery plan, every term |
| Styleguide / tone control | YesStyle rules on paid plans | YesVersioned, reusable |
| Sentence-level alternatives | PartialText only, not files | Yes |
| Translation memory | PartialBusiness plan and up | YesBuilt in, feeds the AI |
| Smart Proofread / QA pass | PartialBeta, Business add-on | Yes |
| Comments & team review | PartialBusiness add-on | Yes |
| Client review links | NoReviewers must be teammates | Yes |
| Batch: whole documents into many languages | YesBulk files, Team plan and up | YesLite and up |
| Notion & Google Drive integration | PartialGoogle Drive, Business add-on | Yes |
| Model quality tiers (per doc/sentence) | No | Yes |
| End-to-end translation in one run | PartialTranslation Flow, Business add-on | Yes |
| Starting price (paid) | Individual from ~€7.49/mo, billed annually (incl. VAT) | €9/$10 a month, excl. VAT |
DeepL prices checked on October 5, 2026 against its published pricing. DeepL sets its own plans and prices, and they may have changed since. View DeepL pricing
DeepL is a translator first, with more of the workflow on each higher plan. Transept is built around the workflow: a first draft of the same quality, then glossary control, a review pass, team collaboration, and export back to wherever the work came from.
Where Transept is the better tool
Long documents that stay consistent
DeepL is excellent on a single paragraph, and its glossaries and style rules apply to file translation too. Transept adds the document itself: each passage is translated with the whole document as context, under the same glossary and styleguide from the first page to the last.
Anything with a review step
Client review, an editor’s pass, a handoff to a teammate: DeepL’s review step needs the Translation Flow add-on to its Business plan, and the reviewer must be on your DeepL team. Transept has comments, threads, and public review links.
Launch work in many languages
DeepL’s Team plan translates a batch of files into several languages at once. In Transept, each document goes into all its languages in one run, and a project keeps one glossary and styleguide across the whole set.
A record of who wrote what
Transept counts, by word, how much of a translation the AI wrote and how much you wrote or changed, and lists every edit and approval. Download it as an originality report when a client or publisher asks how the text was made.
8 hours → 50 minutes
One 40,000-word document, translated by several agents at once, used to take eight hours. We got the agents to sync their memory mid-run, so a term settled in chapter 2 still holds in chapter 40. It now finishes in fifty minutes.
How the syncing worksDeepL has focused on perfecting the translator itself: better models, more language pairs, faster inference, and tighter integration with the operating systems you already use. The workflow features come in tiers on top. Every plan has a glossary, though below the Team plan it holds five entries per language pair. Style rules come with the paid plans, shared glossaries and bulk file translation start on Team, and translation memory on Business. Review, where a teammate edits and comments on a stored file translation, needs the Translation Flow add-on to the Business plan, sold through DeepL’s sales team, and the reviewer has to be on your DeepL team.
Transept took the opposite approach: assume the model is good (it runs on frontier models, currently Anthropic’s Claude) and build everything around it. The product is the workflow: glossaries that carry across documents, styleguides that set the voice, sentence-level alternatives, Smart Proofread, team comments, client review links, batch translation with shared context, and export back to where the work came from. The model underneath can be swapped. For a one-paragraph translation that’s overkill, and DeepL is faster. For a book, a help center, a launch kit, or a translator’s weekly client load, the workflow is what lets you use AI on the whole job instead of one paragraph at a time.
— Don’t take our word for it —
The editor, in miniature
A working slice of the real app: Literess, the glossary, the styleguide, workflows, and translation memory are all live. Click around.
Simple pricing
1 credit = 1 source word. Pro mode costs 3 credits per word. What each action costs
Free
Always freeFor your first projects
Unlimited users
Translated and proofread on Standard. About five with Pro.
- Pro mode: the model thinks each passage through, 3 credits per source word
- Standard quality: fast, accurate, faithful
- Translation memory: your past translations, reused to keep new ones consistent
- Glossary, styleguide, QA, import / export: all included
- Notion, Drive, TMX / XLIFF: import, export, and bring your own memory
- 68 languages: from Spanish to Tagalog
- Paragraph-by-paragraph translation in every mode
- Literess, your AI literary editor: 10 messages free, then credits
- Originality reports: 2 included
- No card required
Lite
The pocket edition
Unlimited users
- Whole pages and documents in one run
- Unlimited originality reports
- Workflows: chain translation, proofreading, and checks into one run
- API, MCP & webhooks: automate runs, or let AI assistants work in your account
- Teams: create as many as you need and invite anyone for free
- Top up anytime: pack credits never expire
Starter
Most popularFor regular client work
Unlimited users
- 3× Lite’s credits: for weekly work
- Teams: invite anyone for free; add €29/$33 seats to fund a shared credit pool (80,000 credits a month each)
Pro
For higher volumeFor agencies & large catalogs
Unlimited users
- 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
FAQ
- Not necessarily. Many translators keep DeepL for quick sentence checks and use Transept for whole documents. The two work fine side by side.
- On a single isolated sentence, DeepL is competitive. On a long document, Transept translates each passage with the whole document as context and applies your glossary and styleguide from the first sentence. DeepL applies glossaries and style rules too, so the fairest test is a chapter of your own in both tools.
- DeepL’s Individual plan costs €7.49 a month, billed annually (DeepL’s listed price includes VAT), and the API is a separate product. Transept starts free with 5,500 credits/month. Lite, the smallest paid plan, is €9/$10 a month excluding VAT and includes 25,000 credits, runs on whole pages and documents, Pro mode, glossary, styleguide, QA, and unlimited teams (seats for extra members start on Starter). The two headline prices aren’t like-for-like, because one buys a per-seat translator and the other a workspace.
- Not exactly, and DeepL’s list is currently the longer one. Transept supports 68 languages, the ones its frontier models handle well, so test your pair on the Free plan before you commit. For the pairs DeepL specializes in (DE↔EN, FR↔EN), use Pro mode to get the most capable model. Transept competes on the workflow around the translation, not on the length of its language list.
- For most document work, no. Transept doesn’t claim to beat DeepL on a single sentence, but on long documents the glossary, styleguide, and document context around the model matter more. The exception is quick desktop translation: DeepL’s apps let you translate the clipboard or a selection in Windows with one keystroke, and Transept doesn’t do that yet.
- The closest is translation quality evaluation, which DeepL offers in beta, on request, to Business and Enterprise customers with the Translation Flow add-on. It checks a translated file segment by segment for errors such as omissions, mistranslations, grammar, and awkward style, for eight language pairs, and suggests fixes in DeepL’s editor. DeepL Write polishes a single text for clarity and style. Transept’s Smart Proofread is a QA pass built for translations: drift, missed glossary terms, and departures from a styleguide.
- DeepL’s Team plan costs €24.99 per user per month and includes 20 file translations per user a month; Business is €49.99 per user per month (both billed annually, VAT included). Transept charges for the AI work you run, not for headcount, and each button shows its price before you click. Creating a team and inviting translators is free, and paid plans start at €9/$10 a month (Lite) with glossaries, styleguides, QA, and Pro mode included. For a shared budget, buy Starter seats: each adds 80,000 credits to a pool the whole team draws from, so three seats give you 240,000 pooled credits for €87/$99 a month. Which costs less depends on how much you translate and how many people need a login.
- On DeepL’s Team plan and up, download each glossary as a CSV file, then upload it in Transept’s glossary manager, and each entry comes in as a source/target pair. DeepL adds two language-code columns, which Transept reads as a context hint, so delete them first if you don’t want them there.
- You re-run only what changed. Edit the source in Transept or re-import the updated file, then switch on Only what changed in the run dialog. Translate then covers just the blocks whose source moved, plus any not yet translated, and the estimate drops to match. Translations you’ve already reviewed stay as they are, a proofread reads only the pages you edited, and one run can carry the fix into every language version.
Keep reading around this comparison
- FeatureDocument translation that holds together→Upload a DOCX, EPUB, Markdown, or PDF file. Transept splits it into blocks and translates each one with the whole document as context, so…
- FeatureA glossary the AI actually follows→Character names, product terms, brand phrases, client vocabulary. Build a glossary once (by hand, from a file, or from a sample document)…
- FeatureSmart Proofread before you deliver→After twenty pages, your eye stops catching things. Smart Proofread re-reads the translation against your glossary, your styleguide, and…
- CompareTransept vs ChatGPT for translation→ChatGPT, Claude, and Gemini are remarkable general-purpose AI assistants. From one chat window, they translate, summarize, rewrite, and…
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 every paid plan. 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.
support@transept.aiFeatured on
