kitio.aiDeepL vs Duden Mentor
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. DeepL starts at See pricing page and Duden Mentor starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Text and document translation
- DeepL Write editing
- Real-time voice translation
- Glossaries and style rules
- Developer API
- Office and browser integrations
- German spelling checks
- Grammar and punctuation
- Style tips
- Synonym suggestions
- Word add-in
| Feature | DeepL | Duden Mentor |
|---|---|---|
| Best for | AI translator for text, documents and live speech | German spelling, grammar and style checker from the Duden dictionary |
| Category | Writing | Writing |
| Pricing model | Freemium | Freemium |
| Starting price | See pricing page | See pricing page |
| Free plan | Yes | Yes |
| Made by | DeepL SE | Cornelsen Verlag |
| Based in | Germany | Germany |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
DeepL starts at See pricing page and Duden Mentor starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
5 plans
Free
Free
- 50,000 characters per month
- 1 saved translation
Individual
€7.49/mo billed yearly
- 300,000 characters per month
- 3 file translations per month
- No training on your texts
- Full-page translation
Team
€24.99/user/mo billed yearly
- Per user
- 1M characters per user each month
- 20 file translations per month
- SSO and team admin
Business
€49.99/mo
- Unlimited characters
- 100 file translations per month
- Translation memory
- SCIM user provisioning
Enterprise
Contact sales
- Custom character and file limits
- Bring your own key
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
DeepL
- Natural-sounding translations
- Translates whole files, not just text
- Free API key for developers
- Paid plans keep your texts out of training
- Free version caps usage at 50,000 characters
- Few file translations on the Individual plan
- Voice minutes are capped per user each month
Duden Mentor
- Follows Duden rules exactly
- Free basic checks
- Works in Word and browsers
- German only
- Style features need Premium
Which one should you choose?
Choose DeepL if you want:
- Natural-sounding translations
- Translates whole files, not just text
- Free API key for developers
Watch out: free version caps usage at 50,000 characters.
Choose Duden Mentor if you want:
- Follows Duden rules exactly
- Free basic checks
- Works in Word and browsers
Watch out: german only.
DeepL vs Duden Mentor FAQ
What is the difference between DeepL and Duden Mentor?
DeepL: AI translator for text, documents and live speech. Duden Mentor: German spelling, grammar and style checker from the Duden dictionary. Both are writing tools.
Is DeepL or Duden Mentor cheaper?
DeepL starts at See pricing page and Duden Mentor starts at See pricing page. Check both pricing pages for current plans.
Do DeepL and Duden Mentor have free plans?
DeepL: Yes. Duden Mentor: Yes.
Who makes DeepL?
DeepL is made by DeepL SE, based in Germany.
Who makes Duden Mentor?
Duden Mentor is made by Cornelsen Verlag, based in Germany.
Which should I choose, DeepL or Duden Mentor?
Choose DeepL if you value natural-sounding translations and translates whole files, not just text. Choose Duden Mentor if you value follows duden rules exactly and free basic checks.