---
base_model: Qwen/Qwen2.5-3B
library_name: mlx
license: other
license_name: qwen-research
license_link: https://huggingface.co/Qwen/Qwen2.5-3B/blob/main/LICENSE
language:
  - en
pipeline_tag: text-generation
tags:
  - mlx
  - custom-kv-cache
  - reasoning
---

# Nexus-Lumina-3B-v3

Nexus-Lumina-3B-v3 is a highly optimized, local reasoning engine fine-tuned by **GDI Nexus**. 

To bypass instruction-tuning degradation (catastrophic forgetting), we fine-tuned the raw `Qwen2.5-3B` base model on 17,636 rigorously filtered reasoning chains from the OpenHermes dataset. It is engineered specifically for Apple Silicon via the MLX framework, utilizing our proprietary `mlx-ash-kv` (Asynchronous Self-Healing KV Cache) for maximum memory stability during extended contexts.

## Evaluation
Evaluated entirely locally on unified memory using the Hugging Face Leaderboard standard (25-shot):
* **Benchmark:** ARC-Challenge (25-shot)
* **Score:** 56.83% (Normalized Accuracy)

This model proves enterprise-grade 3B reasoning is achievable on local fanless hardware.