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Qwen3-1.7B-Flux-Prompt/README.md
ModelHub XC 09df8e25e1 初始化项目,由ModelHub XC社区提供模型
Model: aifeifei798/Qwen3-1.7B-Flux-Prompt
Source: Original Platform
2026-09-08 00:59:17 +08:00

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---
license: apache-2.0
language:
- en
tags:
- qwen
- qwen3
- unsloth
- decision-making
- strategic-analysis
- cognitive-architecture
- chat
- philosophy-driven-ai
pipeline_tag: text-generation
base_model:
- Qwen/Qwen3-1.7B
datasets:
- ABDALLALSWAITI/flux_prompt
---
---
### Thanks mradermacher: For creating the GGUF versions of these models
https://huggingface.co/mradermacher/Qwen3-1.7B-Flux-Prompt-GGUF
https://huggingface.co/mradermacher/Qwen3-1.7B-Flux-Prompt-i1-GGUF
---
# Qwen3-1.7B-Flux-Prompt
**Turn simple words into professional Flux.1 image prompts instantly.**
This is a fine-tuned version of **Qwen3-1.7B-Instruct**, specialized in expanding short concepts into detailed, high-quality descriptions optimized for **Flux.1** image generation models.
## ✨ Key Features
* **🚀 Lightweight & Fast**: Based on the 1.7B model, it runs extremely fast even on older GPUs or CPU.
* **🧠 "Invisible" System Prompt**: The specialized system prompt is **baked into the `tokenizer_config.json`**. You don't need to type complex instructions. Just input `a cat`, and it outputs the full prompt automatically.
* **🎨 Non-Conversational**: It doesn't chat. It doesn't say "Here is your prompt". It only outputs the raw prompt, ready for your stable diffusion pipeline.
* **✅ Validated Quality**: Tested thoroughly for diversity and detail (see examples below).
---
## 🖼️ Examples
**Input:** `a sexy model at home bed`
**Output (Generated by this model):**
> a sexy model at home bed, close-up shot of a woman lying on a luxurious velvet bed with soft golden lighting, elegant floral decor, minimalist modern furniture, subtle candlelight flicker, realistic textures, sensual atmosphere, high-quality photography, dramatic shadows, and a calm yet intimate mood.
---
## 💻 How to Use
### Method 1: Python (Transformers)
Since the system prompt is integrated, the usage is extremely simple:
```python
from transformers import AutoModelForCausalLM, AutoTokenizer
import torch
model_name = "aifeifei798/Qwen3-1.7B-Flux-Prompt" # Replace with your actual repo name
# Load the tokenizer and the model
tokenizer = AutoTokenizer.from_pretrained(model_name)
model = AutoModelForCausalLM.from_pretrained(
model_name,
torch_dtype="auto",
device_map="auto"
)
def generate_flux_prompt(prompt):
messages = [{"role": "user", "content": prompt}]
# Applying the template
text = tokenizer.apply_chat_template(
messages,
tokenize=False,
add_generation_prompt=True,
# enable_thinking=False
)
model_inputs = tokenizer([text], return_tensors="pt").to(model.device)
# Generation with optimized parameters for Flux prompting
generated_ids = model.generate(
**model_inputs,
max_new_tokens=512, # [Key] 512 tokens are sufficient for a detailed visual description.
do_sample=True, # [Required] Enable sampling to allow for creative variations.
temperature=0.7, # [Creativity] 0.7 offers a balance between imaginative detail and coherence.
top_p=0.9, # [Focus] Nucleus sampling: filters out very unlikely words.
top_k=50, # [Stability] Limits vocabulary to top 50 tokens to prevent hallucinations.
repetition_penalty=1.15, # [Variety] Slight penalty to reduce repetitive phrases without breaking grammar.
no_repeat_ngram_size=3,
)
# Extracting the newly generated tokens only
output_ids = generated_ids[0][len(model_inputs.input_ids[0]):].tolist()
# Parsing logic to handle potential reasoning content (if using a reasoning-capable base model)
# Looks for the </think> token ID (usually 151668 in Qwen architecture)
try:
index = len(output_ids) - output_ids[::-1].index(151668)
except ValueError:
index = 0 # No thinking trace found, output starts from the beginning
# Decode the final prompt
# thinking_content = tokenizer.decode(output_ids[:index], skip_special_tokens=True).strip()
content = tokenizer.decode(output_ids[index:], skip_special_tokens=True).strip()
return content
# Example Usage
# if __name__ == "__main__":
# user_input = "a sexy model at new york"
# print(f"Input: {user_input}\n")
# print(f"Generated Flux Prompt:\n{generate_flux_prompt(user_input)}")
```
---
## 🔧 Training Details
* **Base Model:** Qwen/Qwen3-1.7B-Instruct
* **Dataset:** `flux_prompt` (Alpaca format)
* **Fine-tuning Framework:** Unsloth
* **Configuration:**
* `temperature`: 0.7 (Recommended)
* `repetition_penalty`: 1.05 - 1.1 (Recommended)
---
### 💡 Tips for Users
* **Keep it Simple:** The model thrives on simple inputs like "a girl in rain" or "futuristic car".
* **Sampling:** Always use `do_sample=True` with `temperature` around 0.7 to get diverse results every time you run it.