Tencent's Hy-MT2 family beats top APIs, open-sources translation models
With 33-language support and 1.25-bit quantization to 440MB, Tencent's Hy-MT2 redefines multilingual translation.
Tencent has released Hy-MT2, a family of 'fast-thinking' multilingual translation models designed for complex real-world scenarios. The family includes three sizes: a lightweight 1.8B, a balanced 7B, and a 30B-A3B mixture-of-experts model. All three support translation among 33 languages and can follow translation instructions in multiple languages. For on-device deployment, Tencent's AngelSlim 1.25-bit extreme quantization reduces the 1.8B model's storage to just 440 MB while improving inference speed by 1.5x, making it viable for edge devices and mobile applications.
In benchmarks, 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 alternatives like DeepSeek-V4-Pro and Kimi K2.6 in fast-thinking mode, while even the lightweight 1.8B model surpasses mainstream commercial APIs from providers such as Microsoft and Doubao overall. Tencent has also open-sourced IFMTBench, a benchmark specifically for evaluating translation instruction-following capabilities, and released a Hy-MT2-Translator Skill for easy integration into existing pipelines. Additionally, Tencent is partnering with WMT26 for the 'Video Subtitle Translation Task,' offering special awards for participants who use the Hy-MT series in both the general and subtitle translation tasks. All models are available for download on Hugging Face and Tencent's own platforms.
- Three model sizes (1.8B, 7B, 30B-A3B MoE) support translation among 33 languages with instruction-following capability.
- AngelSlim 1.25-bit quantization reduces the 1.8B model to 440MB storage and improves inference speed by 1.5x for on-device deployment.
- 7B and 30B models beat DeepSeek-V4-Pro and Kimi K2.6; the 1.8B outperforms commercial APIs from Microsoft and Doubao.
Why It Matters
Tencent's open-source translation models set new benchmarks, enabling high-quality multilingual translation on-device and in the cloud.