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Large Language ModelsAI Watch (Impress)Published: Oct 30, 2026, 16:00 JST

Yaraku Translation Ver.6.1 adds AI Checker catching 80–90% of mistranslations

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Yaraku Translation Ver.6.1 adds AI Checker catching 80–90% of mistranslations

3 Key Points

  1. What happened

    Yaraku will update "Yaraku Translation" to Ver.6.1 on November 1, adding an "AI Checker" that fixes number errors, omissions, and terminology or tone mismatches; internal testing on 20 Japanese-to-English items detected 80–90% of mistranslations and cut revision man-hours by about 41%.

  2. Why it matters

    In that internal test, the checker caught most mistranslations and cut the effort needed to clean up translated text by roughly 41%, meaning less manual review work after translation.

WHO IT HITSTranslators and translation reviewers using Yaraku Translation for Japanese-to-English work may spend less time manually correcting numbers, omissions, and terminology or tone issues, based on the internal test results.

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Context & Analysis

Yaraku Translation is a CAT tool (computer-assisted translation software that helps translators manage the translation workflow), and Ver.6.1 targets two ends of that workflow: getting the translation right from the start and checking it afterward. The new Style Guide lets users pick items such as who the document is for and what tone to use, so the first draft is generated to fit the purpose; the AI can also ask a few questions and build the style guide automatically from the answers.

On the checking side, the AI Checker reviews finished translations and automatically corrects number errors, omissions, and terminology or tone mismatches. The internal evaluation on 20 Japanese-to-English test items reported detection of 80–90% of mistranslations and about 41% less revision work.

Beyond these two additions, the update extends the smart suggest feature—selecting part of a translation brings up paraphrase candidates—to all languages and to phrases and whole sentences, not just single words. PowerPoint translation is also made less prone to breaking the original formatting, with translation time cut to roughly one-eighth to one-tenth of the previous level.

FAQ
Which plans include the AI Checker?
The AI Checker is available on the Company Plan and Enterprise Plan.
How much faster is PowerPoint translation in Ver.6.1?
PowerPoint translation time is shortened to about one-eighth to one-tenth of the previous time, and original formatting is less likely to break.
What other features does Ver.6.1 add?
Ver.6.1 adds a Style Guide that generates translations suited to the purpose by selecting items like target audience and tone, and a smart suggest feature that offers paraphrasing candidates for words, phrases, and whole sentences across all languages.
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