Z-Image-Base

Z-Image Base

Z-Image Base is a 6-billion parameter text-to-image model from Tongyi-MAI that generates photorealistic images with optional reference image guidance. Provide a text prompt alone, or add a reference image to guide the composition, style, or subject — all at an incredibly affordable price.

Why Choose This?

• Reference image guidance Optionally provide a reference image to influence the generated output's composition, style, or subject matter.

• Flexible output sizing Customize width and height up to 1024px for any aspect ratio you need.

• Strength control Fine-tune how much the reference image influences the output with the strength parameter.

• Prompt Enhancer Built-in tool to automatically improve your prompts for better results.

• Ultra-affordable Just $0.01 per image — perfect for high-volume generation and experimentation.

Parameters

Parameter	Required	Description
prompt	Yes	Text description of the image you want to generate
negative_prompt	No	Elements to avoid in the output
image	No	Reference image to guide generation (upload or URL)
size	No	Preset size options
width	No	Output width in pixels (default: 1024)
height	No	Output height in pixels (default: 1024)
strength	No	How much the reference image influences output, 0-1 (default: 0.6)
seed	No	Random seed for reproducibility (default: -1 for random)
output_format	No	Output format: jpeg, png (default: jpeg)
enable_sync_mode	No	API only: wait for result before returning response

Strength Guide (with Reference Image)

• Lower values (0.2-0.4): Strong reference influence, output closely follows the reference image
• Medium values (0.5-0.7): Balanced blend of reference and prompt
• Higher values (0.8-1.0): Prompt dominates, reference serves as loose inspiration

How to Use

Text-to-Image (No Reference)

1. Write your prompt — describe the image you want to create.
2. Add negative prompt (optional) — specify what to avoid.
3. Set dimensions — adjust width and height for your needs.
4. Run — submit and download your image.

With Reference Image

1. Upload a reference image — to guide the generation's composition or style.
2. Write your prompt — describe the desired output.
3. Adjust strength — control how much the reference influences the result.
4. Run — submit and download your generated image.

Pricing

Output	Cost
Per image	$0.01

Best Use Cases

• Rapid Prototyping — Generate multiple concepts quickly at minimal cost.
• Style-guided Generation — Use reference images to maintain consistent aesthetics.
• Content Creation — Produce visuals for social media, blogs, and marketing.
• Creative Exploration — Experiment freely with different prompts and settings.
• Batch Generation — Create large volumes of images affordably.

Pro Tips

• Use the Prompt Enhancer to automatically improve your descriptions.
• For pure text-to-image, be specific about style, lighting, and composition.
• When using a reference image, start with strength around 0.6 and adjust based on results.
• Use negative_prompt to avoid common issues like "blurry, distorted, low quality".
• Keep the same seed to iterate on a specific composition while tweaking the prompt.
• Lower strength values make output follow the reference more closely; higher values give the prompt more creative freedom.

Notes

• When no image is provided, the model runs in pure text-to-image mode.
• The strength parameter only applies when a reference image is provided.
• enable_sync_mode is only available through the API, not in the web interface.