DeepL

AI Translation

A high-accuracy AI translation tool from Germany. Its Japanese-English translation quality is widely regarded as superior to Google Translate.

4.6
WebWindowsmacOSiOSAndroidブラウザ拡張

What is DeepL?

DeepL is an AI translation tool developed by Germany-based DeepL GmbH. Its neural network-based translation engine delivers natural and accurate translations. It is particularly acclaimed for Japanese-English translation, where it is widely regarded as more accurate and natural than Google Translate. DeepL Write offers not just translation but also text improvement and rewriting capabilities. Its API makes it easy to integrate translation into your own services. Supporting 33+ languages, it is used across a wide range of applications including business documents, academic papers, and web content.

Pricing Plans

1Free plan (character limits apply)
2Starter ¥1,000/mo
3Advanced ¥3,167/mo
4Ultimate ¥6,250/mo
5API Free
6API Pro $5.49/1M characters

Key Features

High-accuracy AI translation (33+ languages)
DeepL Write (text improvement and rewriting)
File translation (PDF, Word, PowerPoint)
Glossary feature (consistent translation of specialized terms)
API for developers
Browser extension

Pros & Cons

Pros

  • Industry-leading Japanese translation accuracy
  • Natural translations that understand context
  • Text rewriting and improvement with DeepL Write
  • Full-file translation (PDF, Word, PowerPoint)
  • Easy integration into your own services via API

Cons

  • Free plan has character limits
  • Supports fewer languages than Google Translate (33 languages)
  • Does not support voice translation

Frequently Asked Questions

Q. Is DeepL free to use?

A. Yes, the free plan provides basic translation features, though there are limits on characters per translation and monthly volume.

Q. Which is more accurate, DeepL or Google Translate?

A. For Japanese-English translation in particular, DeepL is widely regarded by users as producing more natural and accurate translations. However, Google Translate supports a larger number of languages.

Q. How much does the DeepL API cost?

A. The API Free plan allows up to 500,000 characters per month for free. The API Pro plan uses pay-as-you-go pricing at $5.49 per million characters for high-volume translation.

Related Tools