HY-MT1.5-1.8B

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Model Introduction

Hunyuan Translation Model Version 1.5 includes a 1.8B translation model, HY-MT1.5-1.8B, and a 7B translation model, HY-MT1.5-7B. Both models focus on supporting mutual translation across 33 languages and incorporating 5 ethnic and dialect variations. Among them, HY-MT1.5-7B is an upgraded version of our WMT25 championship model, optimized for explanatory translation and mixed-language scenarios, with newly added support for terminology intervention, contextual translation, and formatted translation. Despite having less than one-third the parameters of HY-MT1.5-7B, HY-MT1.5-1.8B delivers translation performance comparable to its larger counterpart, achieving both high speed and high quality. After quantization, the 1.8B model can be deployed on edge devices and support real-time translation scenarios, making it widely applicable.

Key Features and Advantages

HY-MT1.5-1.8B achieves the industry-leading performance among models of the same size, surpassing most commercial translation APIs.

HY-MT1.5-1.8B supports deployment on edge devices and real-time translation scenarios, offering broad applicability.

HY-MT1.5-7B, compared to its September open-source version, has been optimized for annotated and mixed-language scenarios.

Both models support terminology intervention, contextual translation, and formatted translation.

Related News

• 12.30, we have open-sourced **HY-MT1.5-1.8B** and **HY-MT1.5-7B** on Hugging Face.
• 9.1, we have open-sourced **Hunyuan-MT-7B** , **Hunyuan-MT-Chimera-7B** on Hugging Face.

Performance

You can refer to our technical report for more experimental results and analysis.

Technical Report

 

Model Links

Model Name Description Download

• ---------- ----------- -----------

HY-MT1.5-1.8B Hunyuan 1.8B translation model 🤗 Model

HY-MT1.5-1.8B-FP8 Hunyuan 1.8B translation model, fp8 quant 🤗 Model

HY-MT1.5-1.8B-GPTQ-Int4 Hunyuan 1.8B translation model, int4 quant 🤗 Model

HY-MT1.5-7B Hunyuan 7B translation model 🤗 Model

HY-MT1.5-7B-FP8 Hunyuan 7B translation model, fp8 quant 🤗 Model

HY-MT1.5-7B-GPTQ-Int4 Hunyuan 7B translation model, int4 quant 🤗 Model

Prompts

Prompt Template for ZHXX Translation.

Prompt Template for XXXX Translation, excluding ZHXX.

Prompt Template for terminology intervention.

Prompt Template for contextual translation.

Prompt Template for formatted translation.

 

Use with transformers

First, please install transformers, recommends v4.56.0

!!! If you want to load fp8 model with transformers, you need to change the name"ignored layers" in config.json to "ignore" and upgrade the compressed-tensors to compressed-tensors-0.11.0.*

The following code snippet shows how to use the transformers library to load and apply the model.

we use tencent/HY-MT1.5-1.8B for example

We recommend using the following set of parameters for inference. Note that our model does not have the default system prompt.

 

Supported languages:

Languages Abbr. Chinese Names

• ------------------ --------- -----------------

Chinese zh 中文

English en 英语

French fr 法语

Portuguese pt 葡萄牙语

Spanish es 西班牙语

Japanese ja 日语

Turkish tr 土耳其语

Russian ru 俄语

Arabic ar 阿拉伯语

Korean ko 韩语

Thai th 泰语

Italian it 意大利语

German de 德语

Vietnamese vi 越南语

Malay ms 马来语

Indonesian id 印尼语

Filipino tl 菲律宾语

Hindi hi 印地语

Traditional Chinese zh-Hant 繁体中文

Polish pl 波兰语

Czech cs 捷克语

Dutch nl 荷兰语

Khmer km 高棉语

Burmese my 缅甸语

Persian fa 波斯语

Gujarati gu 古吉拉特语

Urdu ur 乌尔都语

Telugu te 泰卢固语

Marathi mr 马拉地语

Hebrew he 希伯来语

Bengali bn 孟加拉语

Tamil ta 泰米尔语

Ukrainian uk 乌克兰语

Tibetan bo 藏语

Kazakh kk 哈萨克语

Mongolian mn 蒙古语

Uyghur ug 维吾尔语

Cantonese yue 粤语