Thank you for using Yaraku Translate.
Translation technology powered by generative AI continues to evolve day by day.
With the emergence of new models and updates to existing algorithms, it is now possible to translate even highly specialized documents with remarkable accuracy by leveraging prompts.
To deliver the most advanced translation experience to our users, Yaraku will introduce a new translation engine and simultaneously increase the maximum number of characters that can be translated per request.
These updates will be implemented on Thursday, July 31 after 7:00 PM.
Please note that the network connection may be unstable during the below period.
We appreciate your understanding.
Scheduled Update Implementation Time:
July 31, 2025 (Thursday) – from 7:00PM to 8:00PM JST
New Engine: GPT-4.1 mini
Following the previous upgrade to GPT-4.1, we are now introducing GPT-4.1 mini as a new engine.
GPT-4.1 mini is a lightweight version of GPT-4.1, with nearly the same translation quality at faster processing speeds. This improvement enables high-volume text translation in less time, allowing us to fulfill the long-requested increase in character limit per translation.
The same security and data protection policies of GPT-4.1 also apply to GPT-4.1 mini.
New Engine: Gemini 2.0 Flash
Gemini, developed by Google, will be added as a new translation engine.
Testing conducted by Yaraku confirmed that Gemini provides translation quality comparable to GPT-4.1 mini in many languages. Especially the Flash version enables faster translation speeds.
Gemini is also recognized for its deeper contextual understanding compared to other major generative AI engines, which is expected to produce more context-aware translations.
We encourage you to try different engines to find the one that best meets your specific needs.
Character Limit Changes
With the introduction of the new standard engine GPT-4.1 mini, we will implement a long-requested update to increase the maximum number of characters. The limit will be raised from 100,000 characters to 150,000 characters per translation.
Following the character limit increase starting with GPT-4.1 mini, we will continue improving our system to enable further expansion of character limits in the future. In addition, the maximum character limits for other generative AI engines, including Claude and GPT-4.1, will also be updated as follows:
To allow users to fully experience the benefits of these updates, the default engine will be changed from Google Translate to GPT-4.1 mini.
As a result, your current language and translation engine settings will be reset. After the update, the language and engine will revert to the default settings, so please reselect your preferred language and engine when performing translations.
(Once re-selected, these settings will be saved for future use.)
Please note that the character limits for Yaraku Translate, Google Translate, Microsoft Translator, and Papago engines will remain at 100,000 characters.
We appreciate your continued support of Yaraku Translate.