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DeepL: our review

DeepL translates text and documents with an engine that built its reputation on French and German before expanding to other languages. A German vendor, it processes translations on servers located within the European Economic Area — a rare claim in this comparator.

Data in the EUFree version, then paid·from $8.74/month
Go to DeepL's website (opens in a new tab)

What we take away from it

What counts in its favor

  • German vendor: translations are processed on DeepL's infrastructure within the European Economic Area, with no transfer to the United States, according to its privacy policy.
  • From the first paid tier (Individual) onward, translated text is no longer used for training: documents are deleted once the translation is delivered.
  • 94% of wins claimed in blind tests run by professional translators across 16 language pairs against GPT-5.2, Gemini 3.1 Pro, and Claude Opus 4.6 (March 2026).

What counts against it

  • The free version processes submitted text, including its translations, to train DeepL's neural networks for an unspecified duration: a confidential document shouldn't go through it.
  • The 94% score covers a set of 16 language pairs with no detail published for French alone: impossible to say, from this source alone, whether French is the best or the worst of the 16.
  • No ISO 27001 certification found on the pages reviewed; only a SOC 2 Type II certification is highlighted.

The most consistent choice for European hosting for anyone translating professional documents, provided you move to a paid tier as soon as a text is confidential. Rule it out for any sensitive document while staying on the free version.

The facts

First paid tier
$8.74/month — Individual, billed annually
Data hosting
Data in the EU · source
Categories
Translation
Data verified on
30 July 2026

What happens to your data

Is your data used to train their models?
Subprocessors
DeepL processes translations on its own infrastructure, with no third-party subprocessor identified on the pages reviewed for the core translation service. A data processing agreement (DPA) under Article 28 of the GDPR is available on request from the vendor, with no direct public link.
Retention
On the free version, submitted texts and their translations are used for a limited, unspecified duration to train the models. On paid tiers, texts and documents are deleted once the service is delivered. Document metadata, free or paid, is automatically erased after 14 days.

DeepL in detail

DeepL translates text, Word, PowerPoint, or PDF documents, and offers a style edit with DeepL Write. The vendor, German, built its reputation on translation quality to and from French well before expanding its offering to writing and voice.

What it actually does

The most common use remains one-off translation: paste a text, an email, a short contract, and get a version in the other language back in a few seconds. On paid tiers, an entire document (Word, PowerPoint, PDF) is translated while keeping its layout, which avoids having to copy a translated contract into a new file. A glossary lets you fix the translation of a recurring business term, useful for a team that wants stable terminology from one document to the next.

Why it particularly interests us

DeepL is one of the few tools in this comparator published in Europe and proving it on its own pages: its privacy policy states that translations are processed on its infrastructure within the European Economic Area, and that free-version data isn't transferred to the United States. For a firm or an SMB bound by a European hosting requirement, that's an argument few Anglo-Saxon competitors can make as clearly. We often recommend it in our training engagements for teams that translate client documents day to day.

Where it falls short

Two reservations change depending on the tier chosen, a third stays constant.

The first, and most important: the free version processes submitted content to train DeepL's neural networks, for a duration the vendor doesn't precisely quantify. A confidential text — a contract, a client file — should therefore never go through the free version. The paid tier changes this rule: texts and documents are deleted once the service is delivered.

The second touches on the proof of quality on French specifically. DeepL announces an overall score of 94% wins against GPT-5.2, Gemini 3.1 Pro, and Google Translate across 16 language pairs, but none of the pages reviewed breaks down this figure pair by pair. French is likely part of the set, but there's no way to say whether it pulls the average up or down.

The third is certification: SOC 2 Type II is highlighted on the security page, but no mention of ISO 27001 appears on the pages reviewed, unlike competitors who display it explicitly.

Our recommendation

For regular professional use in French, DeepL remains a solid choice and the only one in this comparator to document its European hosting so precisely. The condition is strict: never a confidential document on the free version, a paid tier as soon as the text has value.

Who it's for, and who it isn't

Suited for

  • Firm or SMB that translates professional documents and wants processing hosted within the European Economic Area
  • Team that translates to or from French as a priority and looks for an engine recognized on this language pair
  • Organization ready to pay for an Individual or Team tier as soon as a confidential text needs translating, rather than staying on the free version

Not a fit

  • Anyone who would translate a confidential document on the free version: that text then trains DeepL's models
  • Organization that needs a documented ISO 27001 certification: it doesn't appear on the pages reviewed, unlike SOC 2
  • Team translating massive volumes with no budget for a paid tier: the free quotas (300,000 characters, few files) get used up fast

Frequently asked questions

Does DeepL's free version keep my translated texts?
Yes, partly: DeepL's privacy policy states that submitted content and its translations are processed for a limited duration to train and improve its neural networks. A confidential document shouldn't go through the free version, then — that's the whole point of the paid tier, where this processing stops.
Where are my translations processed?
Within the European Economic Area, according to DeepL's privacy policy, which states for the free version's analysis that "data is not transferred to the United States." DeepL is a German vendor, based in Cologne since 2017 — a rare point in this comparator, where American hosting dominates.
How much does DeepL cost for professional use?
The Individual tier starts at $8.74/month billed annually for 300,000 characters and 3 file translations a month. The Team tier, built for several users, is $28.74/user/month under the same billing terms.
Does DeepL really translate into French better than ChatGPT or Google Translate?
DeepL claims 94% wins against Google Translate and GPT-5.2 across 16 language pairs, according to blind tests run by professional translators in March 2026. This figure doesn't break out the French pair alone: read it as a general trend, not as isolated proof for French.
What's the difference with Systran, a French vendor?
Both are European translation engines. DeepL highlights public comparative tests and a simple consumer offering; Systran comes from the public sector and specialized translation (legal, defense) with custom deployments. The choice depends on the use case: everyday translation for DeepL, a very specific business need for Systran.

Alternatives to DeepL

Our sources

Prices and hosting terms change often. We recheck them periodically, but the publisher's page remains the only up-to-date reference.

Is DeepL the right choice for you?

We measure this tool against your real constraints — budget, privacy, your team's skill level — before you sign an annual subscription.

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