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DeepL vs ModernMT

A side-by-side comparison of DeepL and ModernMT, two Translation tools, drawn from Ignaite's continuously-verified listings.

Compared from listings verified as of

DeepL

Translation

AI translation and writing for text, documents, and apps via API.

View DeepL

ModernMT

Translation

Adaptive neural machine translation that learns from your corrections.

View ModernMT

At a glance

Feature comparison of DeepL and ModernMT
AttributeDeepLModernMT
CategoryTranslationTranslation
PricingFREEMIUMFREEMIUM
License (differs)ProprietaryOpen core
Deployment (differs)CloudHybrid
Platforms (differs)Web, iOS, Android, macOS, Windows, APIWeb, API, Linux
Model supportSelf-contained (on-device)Self-contained (on-device)
Vendor (differs)DeepL SETranslated

The honest brief

DeepL

Specialized in-house language models, not a repurposed general LLM, prized for fluent, natural translations.

  • Translates full documents, not just text
  • Developer API for app integration
  • DeepL Write for editing
  • Broad app coverage
  • Next-gen model is paid-only
  • Fewer languages than Google
  • Not a general assistant

ModernMT

Adapts per string from your TM and edits on the fly, so there's no per-customer engine retraining like older custom-MT setups.

  • Open-source ModernMT core, self-hostable
  • Adapts to corrections without retraining
  • Translation-memory and context aware
  • Hosted Hyper Adaptive managed option
  • Fewer languages than DeepL/Google
  • Self-hosting needs ML/ops effort
  • Quality varies by domain corpus