Qwen3-8B-Q8_0/README.md

metadata

license: apache-2.0
tags:
  - gguf
  - qwen
  - llama.cpp
  - quantized
  - text-generation
  - reasoning
  - agent
  - chat
  - multilingual
base_model: Qwen/Qwen3-8B
author: geoffmunn

Qwen3-8B-Q8_0

Quantized version of Qwen/Qwen3-8B at Q8_0 level, derived from f16 base weights.

Model Info

• Format: GGUF (for llama.cpp and compatible runtimes)
• Size: 8.71 GB
• Precision: Q8_0
• Base Model: Qwen/Qwen3-8B
• Conversion Tool: llama.cpp

Quality & Performance

Metric	Value
Quality	Lossless*
Speed	🐌 Slow
RAM Required	~7.1 GB
Recommendation	Highest quality without FP16; perfect for accuracy-critical tasks, benchmarks.

Prompt Template (ChatML)

This model uses the ChatML format used by Qwen:

<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
{prompt}<|im_end|>
<|im_start|>assistant

Set this in your app (LM Studio, OpenWebUI, etc.) for best results.

Generation Parameters

Thinking Mode (Recommended for Logic)

Use when solving math, coding, or logical problems.

Parameter	Value
Temperature	0.6
Top-P	0.95
Top-K	20
Min-P	0.0
Repeat Penalty	1.1

❗ DO NOT use greedy decoding — it causes infinite loops.

Enable via:

• enable_thinking=True in tokenizer
• Or add /think in user input during conversation

Non-Thinking Mode (Fast Dialogue)

For casual chat and quick replies.

Parameter	Value
Temperature	0.7
Top-P	0.8
Top-K	20
Min-P	0.0
Repeat Penalty	1.1

Enable via:

• enable_thinking=False
• Or add /no_think in prompt

Stop sequences: <|im_end|>, <|im_start|>

💡 Usage Tips

This model supports two operational modes:

🔍 Thinking Mode (Recommended for Logic)

Activate with enable_thinking=True or append /think in prompt.

• Ideal for: math, coding, planning, analysis
• Use sampling: temp=0.6, top_p=0.95, top_k=20
• Avoid greedy decoding

⚡ Non-Thinking Mode (Fast Chat)

Use enable_thinking=False or /no_think.

• Best for: casual conversation, quick answers
• Sampling: temp=0.7, top_p=0.8

---

🔄 Switch Dynamically
In multi-turn chats, the last /think or /no_think directive takes precedence.

🔁 Avoid Repetition
Set presence_penalty=1.5 if stuck in loops.

📏 Use Full Context
Allow up to 32,768 output tokens for complex tasks.

🧰 Agent Ready
Works with Qwen-Agent, MCP servers, and custom tools.

🖥️ CLI Example Using Ollama or TGI Server

Here’s how you can query this model via API using curl and jq. Replace the endpoint with your local server (e.g., Ollama, Text Generation Inference).

curl http://localhost:11434/api/generate -s -N -d '{
  "model": "hf.co/geoffmunn/Qwen3-8B:Q8_0",
  "prompt": "Repeat the following instruction exactly as given: Explain why the sky appears blue during the day but red at sunrise and sunset, using physics principles like Rayleigh scattering.",
  "temperature": 0.4,
  "top_p": 0.95,
  "top_k": 20,
  "min_p": 0.0,
  "repeat_penalty": 1.1,
  "stream": false
}' | jq -r '.response'

🎯 Why this works well:

• The prompt is meaningful and demonstrates either reasoning, creativity, or clarity depending on quant level.
• Temperature is tuned appropriately: lower for factual responses (0.4), higher for creative ones (0.7).
• Uses jq to extract clean output.

💬 Tip: For interactive streaming, set "stream": true and process line-by-line.

Verification

Check integrity:

sha256sum -c ../SHA256SUMS.txt

Usage

Compatible with:

• LM Studio – local AI model runner with GPU acceleration
• OpenWebUI – self-hosted AI platform with RAG and tools
• GPT4All – private, offline AI chatbot
• Directly via llama.cpp

Supports dynamic switching between thinking modes via /think and /no_think in multi-turn conversations.

License

Apache 2.0 – see base model for full terms.