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base_model: IFM/K2-Horizon-MoVA-36B-A4B
tags:
- mlx
- apple-silicon
- text-generation
- oQ
license: apache-2.0
---
# K2-Horizon-MoVA-36B-A4B oQ4e
oQ4e (imatrix-enhanced mixed-precision 4-bit) conversion of [IFM/K2-Horizon-MoVA-36B-A4B](https://huggingface.co/IFM/K2-Horizon-MoVA-36B-A4B), a sparse Mixture-of-Experts model with Mixture-of-Values attention (36B total / 4B active parameters, 512K context).
**Upstream model:** [IFM/K2-Horizon-MoVA-36B-A4B](https://huggingface.co/IFM/K2-Horizon-MoVA-36B-A4B) by the IFM Team, released under Apache-2.0.
**Conversion:** Quantized to MLX format using [Hermes Agent](https://hermes-agent.nousresearch.com) with `mlx-lm` and `oMLX`.
## Quickstart
```bash
pip install -U mlx-lm
python3 -m mlx_lm.generate --model hermitdave/K2-Horizon-MoVA-36B-A4B-oQ4e --prompt "Explain why long-context evaluation is difficult." --max-tokens 512 --temp 1.0 --top-p 0.95
```
## Reasoning
K2-Horizon is a reasoning model. Always use `reasoning_effort="high"` for best results:
```python
from openai import OpenAI
client = OpenAI(base_url="http://localhost:8000/v1", api_key="EMPTY")
response = client.chat.completions.create(
model="hermitdave/K2-Horizon-MoVA-36B-A4B-oQ4e",
messages=[{"role": "user", "content": "Explain quantum entanglement."}],
extra_body={"chat_template_kwargs": {"reasoning_effort": "high"}},
)
print("Reasoning:", getattr(response.choices[0].message, "reasoning_content", None))
print("Answer:", response.choices[0].message.content)
```
## Benchmark Results
| Benchmark | K2-Horizon-MoVA-36B-A4B |
|-----------|------------------------|
| tau3-Banking (Agentic tool use) | **26.8** |
| Terminal-Bench 2.1 (Agentic terminal use) | **58.6** |
| GPQA Diamond (Graduate-level science QA) | 80.8 |
| AA-LCR (Long-context reasoning) | 66.3 |
Scores in %. See [model card](https://huggingface.co/IFM/K2-Horizon-MoVA-36B-A4B) for full results.
## oMLX Patch
K2-Horizon requires oMLX v0.6.4+ with the [K2-Horizon support patch (PR #3441)](https://github.com/jundot/omlx/pull/3441). This patch adds:
- `k2_horizon` model type support
- Reasoning content handling (`<ifm|think>` tags)
- Tool call parsing (plain text and XML formats)
- Multi-turn conversation support
Without this patch, oMLX will refuse to load K2-Horizon models with `ValueError: Model type k2_horizon not supported`.
## Chat Template
K2-Horizon uses IFM's custom chat template with reasoning and tool calling support. Key tags:
| Tag | Purpose |
|-----|---------|
| `<ifm\|think>`, `<ifm\|think_fast>`, `<ifm\|think_faster>` | Thinking blocks |
| `<\|ifm\|im_start|>`, `<\|ifm\|im_end\|>` | Message delimiters |
| `<ifm\|tool_call>`, `<ifm\|arg_key>`, `<ifm\|arg_value>` | Tool call structure |
All tags are automatically stripped by oMLX before responses reach users.
## Citation
```bibtex
@misc{k2horizon2026,
title = {Introducing K2 Horizon: Frontier Performance, Radically Open},
author = {{IFM Team}},
year = {2026},
url = {https://ifm.ai/blog/k2/},
}
```
## License
Apache-2.0 (same as upstream).
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