Hy-MT1.5-1.8B-1.25bit: A 440MB Offline Phone Translation Model

Melvin Vivas · X video post · 2026-04-30 · Open on X

Topics: LLM Fundamentals, Industry Trends & Job Market · Level: intermediate

Summary

An open-sourced 1.8B-parameter translation model, quantized to 1.25 bits so it takes only 440MB, runs fully offline on a phone. It supports 33 languages and, according to its makers, beats Google Translate on standard benchmarks.

Key points

• 1.8B parameters, quantized to 1.25 bits, for a 440MB model.
• Runs fully offline on a phone.
• Supports 33 languages.
• Claimed to match commercial translation APIs and 235B-scale models on standard benchmarks.
• Shows how far extreme quantization can push small on-device models.

Resources mentioned

• Hy-MT1.5-1.8B-1.25bit · tool · huggingface.co · free
  An open-source 1.25-bit translation model, 440MB, covering 33 languages for offline use on phones.

Try this

• Build an offline mobile translation app on top of Hy-MT1.5-1.8B-1.25bit.