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ChatGPT as a Translation Engine: A Case Study on Japanese-English

Published: October 9, 2025 | arXiv ID: 2510.08042v1

By: Vincent Michael Sutanto , Giovanni Gatti De Giacomo , Toshiaki Nakazawa and more

Potential Business Impact:

Makes computers translate Japanese to English better.

Business Areas:
Translation Service Professional Services

This study investigates ChatGPT for Japanese-English translation, exploring simple and enhanced prompts and comparing against commercially available translation engines. Performing both automatic and MQM-based human evaluations, we found that document-level translation outperforms sentence-level translation for ChatGPT. On the other hand, we were not able to determine if enhanced prompts performed better than simple prompts in our experiments. We also discovered that ChatGPT-3.5 was preferred by automatic evaluation, but a tradeoff exists between accuracy (ChatGPT-3.5) and fluency (ChatGPT-4). Lastly, ChatGPT yields competitive results against two widely-known translation systems.

Country of Origin
🇯🇵 Japan

Repos / Data Links

Page Count
6 pages

Category
Computer Science:
Computation and Language