Real-Time Voice Translation Tool 'Onyaku' Launches New 'High-Precision AI Translation β' Feature, Enhancing Translation Accuracy Between Japanese, Chinese, Korean, and Southeast Asian Languages

Rozetta Inc. (President: Junichi Itsuishi), a company under the Metareal Group that develops and provides Japan's No.1 AI translation service in the domestic market, announced on June 16, 2026, that its real-time voice translation tool 'Onyaku' has been enhanced with the new 'High-Precision AI Translation β' feature, significantly improving translation accuracy between Japanese and languages such as Chinese, Korean, and Southeast Asian languages (Thai, Vietnamese, Indonesian, etc.).

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■ Background: Addressing Translation Accuracy Challenges for Language Pairs Beyond English and Japanese

'Onyaku' has been well-received as a real-time voice translation tool that operates entirely on personal PCs and smartphones, enabling real-time transcription and translation of meeting audio, as well as automatic creation of meeting minutes.
However, compared to translations between English and Japanese, there was room for improvement in translation accuracy between Japanese and languages such as Chinese, Korean, and Southeast Asian languages (Thai, Vietnamese, Indonesian, etc.).
To address this issue, the company determined that high-precision AI-powered translation would be effective, leading to the introduction of the new 'High-Precision AI Translation β' feature.

■ Features of the New 'High-Precision AI Translation β' Function

This feature translates speech-recognized source text using high-precision AI. It is expected to deliver significantly higher translation accuracy, especially for language pairs involving Japanese and Chinese, Korean, or Southeast Asian languages (Thai, Vietnamese, Indonesian, etc.), compared to previous versions.
Additionally, by considering context, the system generates more fluent and natural translations, even for long or complex sentences.
This feature will be standard on 'Onyaku' starting June 16, 2026, and is available at no additional cost.

■ Comment from Hu Shihua, COO, Onyaku Company, Rozetta Inc.

"Improving translation accuracy beyond English-Japanese pairs has been a frequent request from many of our customers. With the introduction of high-precision AI translation, we have significantly enhanced translation accuracy between Japanese and languages such as Chinese, Korean, and Southeast Asian languages (Thai, Vietnamese, Indonesian, etc.), enabling us to deliver natural translations even for long and complex sentences. This is a feature that allows smoother and more accurate meetings with Asian subsidiaries and research partners."

■ Future Outlook

Moving forward, 'Onyaku' will continue to expand its features and improve translation quality, aiming to serve as a personal AI interpreter for every individual, supporting global communication.

【About Onyaku】

'Onyaku' is a real-time voice translation tool that works entirely on personal PCs and smartphones. It transcribes and translates meeting audio in real time and automatically generates meeting minutes, eliminating the need for human interpreters and post-meeting documentation. Supporting over 100 languages, 'Onyaku' puts a dedicated AI interpreter at everyone's fingertips, streamlining global meetings and online business negotiations.

Real-time Translation & Meeting Minutes AI 'Onyaku': https://www.rozetta.jp/lp/onyaku/

Free Trial & Inquiries: https://www.rozetta.jp/lp/onyaku/trial.html

Partner Program Inquiries: https://www.rozetta.jp/form/form_partner.html

■ About Metareal Group

With the mission of "freeing people worldwide from constraints of location, time, and language," the Metareal Group holds the No.1 market share in Japan's translation market. (Source: ITR 'ITR Market View: Generative AI/Machine Learning Platform Market 2025,' Translation Market: Vendor Revenue Share, FY2024 Results and FY2025 Forecast)

The group supports 2,000 specialized fields, including legal, pharmaceutical, financial, chemical, IT, mechanical, and electrical electronics, and provides fully customized AI development services aimed at solving customer-specific challenges and creating future solutions.

AI Development Achievements: Translation AI, Quarterly Report AI, PR AI, AI for Pharmaceutical Companies, Game Localization AI, etc.

Company Name:

Metareal Inc.

URL:

https://www.metareal.jp/

Headquarters:

3-7-1 Kanda Jinbocho, Chiyoda-ku, Tokyo

Representative:

President Junichi Itsuishi

Established:

February 2004

Business Activities:

Planning, development, and operation of industry-specific professional document AI

Contact:

pr@metareal.jp

■ About Rozetta Inc.

Leveraging its position as Japan's largest AI translation leader and a customer base of over 6,000 companies, Rozetta Inc. provides AI services that contribute to specialized document creation in industries such as pharmaceuticals, manufacturing, legal, patents, and finance.

Flagship Service: High-precision Industrial Translation AI 'T-4OO' with Strong Expertise in Technical Terminology

(Features)

1. Combines generative AI with specialized translation. A continuously evolving translation platform

2. Ultra-high-precision automatic translation with 95% accuracy

3. Covers 2,000 specialized fields and 100 languages

4. On-premise and domestic server deployment options available for top-tier security

5. Full translation of scanned image PDFs

6. Automatically reflects company-specific terminology in translation results

Other services include 'Rakuyaku AI,' a generative AI solution for pharmaceutical companies, and the meeting minutes and translation AI tool 'Onyaku.'