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Sculptor-AI/Ursa_Minor-GGUF
Ursa_Minor-GGUF is a machine learning model from Sculptor-AI. Use it for the machine learning task on the model card, and read the license before you ship it in a product. The card lists the license as apache-2.0.
Official GGUF quantizations of Sculptor-AI/UrsaMinor.
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Updated Mar 10, 2025
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From the Hugging Face model README
Official GGUF quantizations of Sculptor-AI/Ursa_Minor.
This repository contains the official quantized versions of Ursa_Minor, created by Sculptor-AI. These quantizations are optimized for both quality and performance.
Ursa_Minor is a reasoning-focused language model developed by ExplodingCB2 & Kaileh57 (Sculptor-AI). It is designed to tackle complex reasoning tasks, demonstrating capabilities in multi-step inference, logical deduction, and contextual understanding.
Key Features:
If you are unsure how to use GGUF files, here are some common ways to run the model:
./main -m /path/to/Ursa_Minor.Q4_K_M.gguf -n 512 -p "What are the prime factors of 42?"
Load the model in text-generation-webui by selecting the GGUF file from your models directory.
Import the GGUF file directly in LM Studio to run the model locally.
The following quantizations are available, sorted from smallest to largest file size:
| Type | Size | Quality | Inference Speed | Notes |
|---|---|---|---|---|
| Q2_K | 0.8 GB | Basic | Very Fast | Smallest size, acceptable for basic tasks |
| Q3_K_S | 0.9 GB | Improved | Fast | Good balance for limited resources |
| Q3_K_M | 0.9 GB | Improved+ | Fast | Slightly better than Q3_K_S |
| Q3_K_L | 1.0 GB | Good | Moderate | Recommended for good quality with small size |
| IQ4_XS | 1.0 GB | Good+ | Moderate | Improved quantization technique |
| Q4_K_S | 1.0 GB | Very Good | Fast | Recommended for most users |
| Q4_K_M | 1.1 GB | Very Good+ | Fast | Recommended for daily use |
| Q5_K_S | 1.2 GB | Excellent | Moderate | High-quality output |
| Q5_K_M | 1.2 GB | Excellent+ | Moderate | Enhanced quality over Q5_K_S |
| Q6_K | 1.4 GB | Superior | Moderate | Very high-quality, close to F16 |
| Q8_0 | 1.7 GB | Near-perfect | Slow | Almost indistinguishable from F16 |
| F16 | 3.2 GB | Perfect | Very Slow | No quantization, full precision |
Here's a comparison of different quantization types (lower is better):

For more detailed information about quantization techniques and their effects, see Artefact2's analysis.
If you have questions or need support with these quantized models, please open a discussion on our community page.
We thank the community for their support and feedback in helping us improve and optimize these model quantizations.