alibaba/z-image/base/lora
Z Image Base Lora is Alibaba's advanced text-to-image AI model. Create photorealistic images, illustrations, and concept art from natural language descriptions with exceptional detail and prompt adherence.
Example output — click Run to generate your own
Send your first request
OpenAI-compatible endpoint with unified authentication and usage tracking.
https://api.sandbase.ai/v1/runalibaba/z-image/base/loraInput Schema
5 parameters · 1 required · 4 optional
| Parameter | Type | Required | Description |
|---|---|---|---|
prompt | string | Required | The prompt to generate an image from. |
seed | integer | Optional | The same seed and the same prompt given to the same version of the model will output the same image every time. |
loras | object[] | Optional | List of LoRA weights to apply (maximum 3). · Default: [] |
aspect_ratio | string | Optional | The aspect ratio of the generated image. · Options: 21:9, 16:9, 3:2, 4:3, 5:4, 1:1, 4:5, 3:4, 2:3, 9:16 21:916:93:24:35:41:14:53:42:39:16 |
output_format | string | Optional | The format of the generated image. · Options: jpeg, png · Default: "png" jpegpng |
Output Schema
| Field | Type | Description |
|---|---|---|
id | string | Unique identifier for the generation task |
status | string | Task status: pending, running, completed, failed, timeout |
model | string | Model used for the generation |
outputs | array | Array of output items |
outputs[].url | string | URL of the generated artifact |
outputs[].content_type | string | MIME type (e.g. image/png, video/mp4) |
error | object | null | Error details if failed, null on success |
error.type | string | Machine-readable error type code |
error.message | string | Human-readable error description |
Async Workflow
This model uses asynchronous execution. Submit a request and poll for the result.
- Submit — POST to /v1/run, receive an
id - Poll — GET /v1/run/{id} until status is
completed,failed, ortimeout - Retrieve — Read
outputsfrom the completed response
Code Examples
Ready-to-run snippets
# Step 1: Submit
curl -X POST https://api.sandbase.ai/v1/run \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{
"model": "alibaba/z-image/base/lora",
"loras": [],
"prompt": "Grandmother knitting by a window, an empty chair by her",
"output_format": "png"
}'
# Step 2: Poll result (replace <id>)
curl https://api.sandbase.ai/v1/run/<id> \
-H "Authorization: Bearer YOUR_API_KEY"API README
Z Image Base (LoRA)
Z Image Base (LoRA) Z-Image Base LoRA is the undistilled foundation of the Z-Image family, intended for customization and diverse prompt-led generation. The attached low-rank adaptation introduces a specialized aesthetic, subject, or production concept without replacing the underlying image model.
Use this foundation for research, fine-tuning, custom pipelines, and projects that value diversity over minimum latency. Include the adaptation’s learned concept naturally inside the brief so it interacts with the complete composition.
Highlights
- Z-Image Base LoRA Undistilled image foundation. Retains the full generative training signal for adaptation and research.
- Z-Image Base LoRA High output diversity. Explores a wider range of compositions and visual interpretations.
- Z-Image Base LoRA Fine-tuning readiness. Provides a suitable foundation for domain, style, or character adaptation.
- Z-Image Base LoRA Detailed text-to-image synthesis. Builds polished photographic and illustrative scenes from descriptive prompts. A LoRA adds a learned style, subject, or domain concept to this behavior.
Pricing
| Billing unit | Price |
|---|---|
| Per request | $0.012 |
When to Use
| ✅ Good fit | ❌ Consider alternatives |
|---|---|
| The model's named workflow matches the source material and intended output | A different input modality or model route is required |
| A managed asynchronous result is suitable for the production pipeline | A synchronous, interactive editor is essential |
| The documented controls cover the required duration, framing, or format | The project needs controls outside this endpoint's schema |
| Creative iteration benefits from a repeatable request structure | Exact deterministic pixels, frames, geometry, or samples are mandatory |
| A finished downloadable media asset is the desired deliverable | Editable source layers or a native project file are required |
Prompt Guide
For generation, state the intended result first, then add the subject or source treatment, progression, style, and delivery constraints. Keep one creative variable per phrase, use the documented field names for controls, and change one setting at a time when comparing results.
{
"aspect_ratio": "21:9",
"output_format": "png",
"prompt": "Grandmother knitting by a window, an empty chair by her"
}
Technical Specs
| Spec | Value |
|---|---|
| Model ID | alibaba/z-image/base/lora |
| Inputs | aspect_ratio, loras, output_format, prompt, seed |
| Required inputs | prompt |
| Output fields | content_type, url |
| Execution | Async (submit, then poll for result) |
| Aspect Ratio | 21:9 / 16:9 / 3:2 / 4:3 / 5:4 / 1:1 / 4:5 / 3:4 / 2:3 / 9:16 |
| Output Format | jpeg / png |
Related Models
alibaba/z-image/base— Compare this concrete local family route.alibaba/z-image/turbo— Compare this concrete local family route.alibaba/z-image/turbo/edit— Compare this concrete local family route.

