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Open-weight model · Translation

Hy-MT2-1.8B

by Tencent tencent/Hy-MT2-1.8B

English | 中文 Hy-MT2 is a family of “fast-thinking” multilingual translation models designed for complex real-world scenarios.

Parameters2B
Context262,144
Weights4.1 GB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads28.6k

Runs On

What it takes to serve Hy-MT2-1.8B (2B parameters): the memory its weights need at each precision, and the cheapest way to rent enough data-center GPUs to hold them.

PrecisionWeightsMemory neededCheapest setupPer hourAlso fits
16-bit 4.1 GB 4.9 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 2.0 GB 2.4 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 1.0 GB 1.2 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00

Memory is the weights at that precision plus 20% for the runtime and a short context; a long context needs more. Prices are the lowest on-demand hourly rates in the SAVRN Index, read Sep 18, 2026.

Model Card

By Tencent, published under apache-2.0, revision 9a341cd1b679.

English | 中文



[![HuggingFace](https://img.shields.io/badge/%F0%9F%A4%97%20Hugging%20Face-Tencent%20Hy-ffc107?color=ffc107&logoColor=white)](https://huggingface.co/collections/tencent/hy-mt2)    [![ModelScope](https://img.shields.io/badge/ModelScope-Tencent%20Hy-624aff)](https://modelscope.cn/collections/Tencent-Hunyuan/Hy-MT2)

 Official Website  |    GitHub  |    AngelSlim  |    Hy-MT2 Report

Model Introduction

Hy-MT2 is a family of “fast-thinking” multilingual translation models designed for complex real-world scenarios. It includes three model sizes: 1.8B, 7B, and 30B-A3B (MoE), all of which support translation among 33 languages and effectively follow translation instructions in multiple languages. For on-device deployment, AngelSlim 1.25-bit extreme quantization reduces the storage requirement of the 1.8B model to only 440 MB and improves inference speed by 1.5x. Multi-dimensional evaluations show that Hy-MT2 delivers outstanding performance across general, real-world business, domain-specific, and instruction-following translation tasks. The 7B and 30B-A3B models outperform open-source models such as DeepSeek-V4-Pro and Kimi K2.6 in fast-thinking mode, while the lightweight 1.8B model also surpasses mainstream commercial APIs from providers such as Microsoft and Doubao overall.

In this release, we also open-source IFMTBench, a benchmark for evaluating translation instruction-following capabilities.

Read the full model card (1,215 words)

Configuration

Architecture
HunYuanDenseV1ForCausalLM
Context length (tokens)
262,144
Layers
32
Hidden size
2,048
Feed-forward size
6,144
Attention heads
16
Key/value heads
4
Head dimension
128
Vocabulary size
120,818
RoPE base
10000
Stored precision
bfloat16
Model type
hunyuan_v1_dense

Identity and Version

Repository
tencent/Hy-MT2-1.8B
Publisher
Tencent
Task
Translation
Modality
Text
Library
transformers
Parameters
2B parameters
Languages
zh, en, fr, pt, es, ja, tr, ru
Revision
9a341cd1b679d3efd23b46e847b01745a71ed792
First published
2026-05-11
Last updated
2026-05-26

Files and Weights

51 files, 4.1 GB in total. The weights are 1 file totalling 4.1 GB in safetensors.

Weights1 file · 4.1 GB
Configuration28 files · 118.8 KB
Tokenizer2 files · 9.7 MB
Documentation5 files · 69.8 KB
Other14 files · 4.0 MB
Repository1 file · 1.8 KB
Every file
FileTypeSizeSHA-256
model.safetensorsWeights4.1 GB 29e9117a44c7
config.jsonConfiguration1.3 KB
generation_config.jsonConfiguration221 B
special_tokens_map.jsonConfiguration488 B
train/deepspeed_support/ds_zero2_no_offload.jsonConfiguration528 B
train/deepspeed_support/ds_zero2_offload.jsonConfiguration676 B
train/deepspeed_support/ds_zero3_no_offload.jsonConfiguration1.1 KB
train/deepspeed_support/ds_zero3_offload.jsonConfiguration1.1 KB
train/deepspeed_support/ds_zero3_offload_no_auto.jsonConfiguration944 B
train/deepspeed_support/merge_lora_weight.pyConfiguration2.5 KB
train/deepspeed_support/train.pyConfiguration25.7 KB
train/deepspeed_support/train_dense.pyConfiguration14.9 KB
train/llama_factory_support/dataset_info.jsonConfiguration974 B
train/llama_factory_support/ds_zero2_offload.jsonConfiguration892 B
train/llama_factory_support/ds_zero2_offload_lora.jsonConfiguration795 B
train/llama_factory_support/ds_zero3_offload.jsonConfiguration954 B
train/llama_factory_support/hy_dense_1_8b_full_sft.yamlConfiguration1.1 KB
train/llama_factory_support/hy_dense_1_8b_lora_sft.yamlConfiguration1.2 KB
train/llama_factory_support/hy_dense_7b_full_sft.yamlConfiguration1.1 KB
train/llama_factory_support/hy_dense_7b_lora_sft.yamlConfiguration1.2 KB
train/llama_factory_support/hy_dense_template.pyConfiguration3.6 KB
train/llama_factory_support/hy_v3_full_sft.yamlConfiguration1.1 KB
train/llama_factory_support/hy_v3_lora_sft.yamlConfiguration1.2 KB
train/llama_factory_support/hy_v3_patches.pyConfiguration8.8 KB
train/llama_factory_support/hy_v3_template.pyConfiguration1.9 KB
train/llama_factory_support/train_hy_dense.pyConfiguration3.0 KB
train/llama_factory_support/train_hy_v3.pyConfiguration2.5 KB
train/tools/check_converted.pyConfiguration15.6 KB
train/tools/convert_ckpt_to_outer.pyConfiguration23.5 KB
LICENSE.txtDocumentation11.6 KB
README.mdDocumentation14.8 KB
README_CN.mdDocumentation13.8 KB
train/README.mdDocumentation15.4 KB
train/README_CN.mdDocumentation14.2 KB
chat_template.jinjaOther654 B
imgs/logo-en.pngOther65.9 KB
imgs/logo-zh.pngOther69.9 KB
imgs/main_result.pngOther3.8 MB b87606817fec
train/data/example_data.jsonlOther27.8 KB
train/deepspeed_support/merge_lora_weight.shOther269 B
train/deepspeed_support/train.shOther3.5 KB
train/deepspeed_support/train_dense.shOther4.9 KB
train/deepspeed_support/train_dense_lora.shOther5.1 KB
train/deepspeed_support/train_lora.shOther3.6 KB
train/llama_factory_support/convert_zero_to_hf.shOther5.9 KB
train/llama_factory_support/train_lf.shOther3.9 KB
train/llama_factory_support/train_lf_dense.shOther4.2 KB
train/requirements.txtOther159 B
.gitattributesRepository1.8 KB
tokenizer.jsonTokenizer9.5 MB
tokenizer_config.jsonTokenizer165.8 KB

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
4.1 GB
Download from Tencent

Released by Tencent through its official repository on Hugging Face. Read the license.

Built From

  • Described by arXiv:2605.22064

Memory Requirements

PrecisionWeights in memory
As published4.1 GB
16-bit4.1 GB
8-bit2.0 GB
4-bit1.0 GB

Weights only, from the published parameter count; the key-value cache and runtime add to this.

Questions About Hy-MT2-1.8B

How much GPU memory does Hy-MT2-1.8B need?

About 4.9 GB at 16-bit and 1.2 GB at 4-bit: the weights (2B parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run Hy-MT2-1.8B on?

At 16-bit, 1x MI300X from $1.85 an hour; at 4-bit, 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.

Can I use Hy-MT2-1.8B commercially?

Yes. Hy-MT2-1.8B is released under Apache License 2.0. The Apache License 2.0 is a permissive open-source license. It permits commercial use, modification and redistribution. It requires keeping the license and copyright notices and any NOTICE file, stating significant changes, and it includes an express patent grant from contributors.

What is Hy-MT2-1.8B's context length?

262,144 tokens, from the maximum position embeddings in its published configuration.

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