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K2-Horizon-3.7B MLX 4-bit release
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---
base_model: IFM/K2-Horizon-3.7B
base_model_relation: quantized
license: apache-2.0
language:
- en
pipeline_tag: text-generation
library_name: mlx
tags:
- mlx
- mlx-lm
- 4-bit
- k2-horizon
- long-context
- 512k-context
- dense
---
# K2-Horizon-3.7B MLX — 4-bit
MLX 4-bit conversion of [IFM/K2-Horizon-3.7B](https://huggingface.co/IFM/K2-Horizon-3.7B), a 3.7B dense decoder-only model for reasoning, coding, long-context work, and tool use. The source checkpoint supports a native context length of **524,288 tokens (512K)**.
## Benchmarks
![IFM/K2-Horizon-3.7B benchmark results](assets/k2-horizon-3.7b-benchmarks.png)
*Benchmark results reported by IFM for the original IFM/K2-Horizon-3.7B checkpoint.*
## Release
| Format | Quantization | Size |
| --- | --- | ---: |
| MLX safetensors | Affine 4-bit, group size 64 | 2.87 GB |
The included `k2_horizon_mlx.py` adapter preserves K2 Horizon's grouped RMSNorm. Use it with MLX-LM and `--trust-remote-code`. The model is text-only; no vision projector or MTP files are included.
## Usage
```bash
pip install -U mlx-lm
mlx_lm.generate \
--model . \
--trust-remote-code \
--prompt "Explain why reproducible builds matter." \
--max-tokens 512
```
## Source
- Model: [IFM/K2-Horizon-3.7B](https://huggingface.co/IFM/K2-Horizon-3.7B)
- Source revision: [`633f52a`](https://huggingface.co/IFM/K2-Horizon-3.7B/tree/633f52ad28b17edeabd82afc61d2d13b4c59a561)
- License: [Apache-2.0](https://www.apache.org/licenses/LICENSE-2.0)
- Checksums: [SHA256SUMS.txt](SHA256SUMS.txt)