# Tencent Hunyuan open-sources Hy-SimulMT, a live speech interpreter with about 3 seconds of lag

> Original title: Tencent Hunyuan Open-Sources Hy-SimulMT, a Speech-to-Speech Interpreter With About 3 Seconds of Lag

- Source: Pandaily
- Published: 2026-10-27T02:52:09.000Z
- Bad Influence: https://badinfluence.news/items/qoorrdhg7mc0kh0gou96v9eb2
- Original: https://pandaily.com/tencent-hunyuan-hy-simulmt-open-source-simultaneous-interpretation-voice-cloning-streamlaal

## Summary

Tencent Hunyuan has open-sourced Hy-SimulMT, a model that translates Chinese and English speech into the other language in real time while cloning the speaker's voice. Tencent reports about 3 seconds of latency on the RealSI benchmark using the StreamLAAL metric, which the project notes is not the same as time to first translated speech. The 30B-A3B mixture-of-experts model is available under an Apache 2.0 license, and it is live first in the Hy Translate app.

## Why it matters

The article gives the model's latency, benchmark scores, and the caveat on the StreamLAAL metric, helping readers weigh how it compares with human interpreters.