---
license: apache-2.0
base_model: NiuTrans/LMT-60-4B
library_name: coreai
pipeline_tag: translation
tags:
  - coreai
  - ios
  - on-device
  - translation
---

# LMT-60-4B for Core AI on iOS

This repository contains an iOS 27 Core AI conversion of
[`NiuTrans/LMT-60-4B`](https://huggingface.co/NiuTrans/LMT-60-4B), pinned at
revision `f3d1043332179618de226eab7dd38c7290a7dfb9`.

It was exported with Apple's
[`coreai-models`](https://github.com/apple/coreai-models) toolchain at revision
`917dc99f0cc23ac0905c4de26e18e5a3764703fc` using the official Qwen3 4B iOS
mixed 4-bit/8-bit compression recipe. The maximum context length is reduced to
2,048 tokens for live translation, lowering KV-cache pressure while retaining
ample context for short speech transcript segments.

## Artifact

- Model: Qwen3-based LMT-60-4B
- Platform: iOS 27 Core AI
- Weights: mixed 4-bit/8-bit palettization (`qwen3_4b_mixed_4bit_8bit`)
- Context: 2,048 tokens
- Tokenizer: embedded
- Asset format: architecture-neutral `.aimodel`

The source `.aimodel` is specialized by Core AI for the user's device. This
keeps one downloadable artifact compatible with supported Apple Intelligence
devices instead of storing a separate multi-gigabyte specialization per device
architecture.

## Languages

LMT-60-4B supports 60 source languages, including Croatian and Italian. It does
not include Slovenian; applications should use a dedicated Slovenian fallback.

## License

The source model is released under Apache-2.0. Apple's conversion/runtime source
is governed by the BSD-3-Clause license in the upstream `coreai-models`
repository.