MateCat vs DeepL
A detailed comparison to help you choose between MateCat and DeepL.
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Verdict: DeepL wins
DeepL scores 4.3/5, edging out MateCat at 3.9/5. Professionals and product teams who translate content a human will read and where terminology and tone matter more than maximum language coverage.
MateCat Open-source translation platform with AI assistance and collaborative features | DeepL The world's most accurate AI translator | |
|---|---|---|
| Rating | 3.9 (1 review) | 4.3 (1 review) |
| Pricing Model | free | freemium |
| Starting Price | Free | Free tier available |
| Best For | Freelance translators, students, small agencies and nonprofit localisation teams who want a no-install, zero-cost CAT tool with adaptive MT and translation memory, and don't need enterprise project governance. | Professionals and product teams who translate content a human will read and where terminology and tone matter more than maximum language coverage. |
| Free Tier | ||
| API Access | ||
| Team Features | ||
| Open Source | ||
| Tags | free tieropen source | free tierapi access |
| Visit MateCat → | Visit DeepL → |
MateCat
Pros
- + Truly free with unlimited users, projects and storage — no word meter at all, unlike Smartcat's 15,000-Smartword monthly cap on free AI translation.
- + ModernMT adaptive machine translation is the default engine for logged-in users at no cost, learns from your edits in real time, and carries a 100,000-word context window across 200 languages.
- + MyMemory — around 12 billion words of public translation memory — is preloaded, giving fuzzy-match coverage from the first segment.
- + Zero-friction access: single files translate with no registration at all, entirely in the browser, across 80 file formats with the format preserved on download (documented exceptions for iWorks and PDF).
- + Open source under the LGPL and self-hostable, with a REST API (projects up to 600 files at 200 MB each), open standards (XLIFF, TMX) and open APIs for external TMS and MT connections.
Cons
- - Vendor documentation contradicts itself on fundamentals — 70 vs 80 vs 82 file formats and 90 vs 200+ languages across its own pages — which makes pre-purchase verification unnecessarily manual.
- - On the hosted service, source files, segments, translation memories and outputs all live on Translated's servers; self-hosting means a manual Ubuntu install with no maintained cloud image.
- - The MT features that matter most for production shops — glossary enforcement in MT, pretranslation adaptivity, TM optimisation — are gated behind paid ModernMT licences.
- - Thin translation-management layer: no linguist marketplace, limited workflow and permission controls, and collaboration described as basic by independent comparisons.
- - Single-vendor dependence: development and hosting rest with Translated srl, whose business model is translation outsourcing and ModernMT licences — free support has no SLA and no paid tier exists to buy one.
DeepL
Pros
- + Glossary enforcement held across both text and document translation in my tests — pinned terms stayed untranslated.
- + Document translation preserved DOCX tables and heading styles instead of flattening them.
- + HTML tag handling leaves markup in place and does not bill tags as characters, which keeps web-content costs predictable.
- + Free web tier (50,000 characters/month) is enough to evaluate quality on your own content before paying.
Cons
- - Free tier is small and file translation is metered separately (3 files/month on Individual).
- - DeepL Write Pro is a paid add-on on Individual and Team rather than included.
- - API overage (roughly EUR 22 per million characters at time of writing) prices higher than Google's basic tier.
- - Still fewer low-resource language pairs than Google Translate despite the 100+ language expansion.
Frequently Asked Questions
Which is better, MateCat or DeepL?▼
DeepL scores higher at 4.3/5 vs 3.9/5 for MateCat, making it the better-rated option in our comparison.
What is the difference between MateCat and DeepL?▼
MateCat: MateCat is a free, open-source computer-aided translation editor that pre-translates a file with machine translation and translation memory and lets translators correct the result in the browser. DeepL: AI translation service known for nuanced, high-accuracy translations supporting 32 languages with a document translator.
Is MateCat or DeepL more affordable?▼
MateCat starts at €0/mo, DeepL starts at €0/mo. Check the comparison table above for current pricing.
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