Documentation Index
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Bailian Qwen-Image series
Generate images with Tongyi Qwen Bailian Qwen-Image models. Supports prompt refinement and strong Chinese-style semantics.
Basics
- Endpoint:
POST /v1/images/generations
- Auth:
Bearer Token
- Content-Type:
application/json
Model overview
| Model | Summary | Output |
|---|
wan2.6-t2i **recommended** | Wanxiang 2.6—free size within total pixel and aspect constraints (same idea as 2.5) | Resolution: total pixels in [1280×1280, 1440×1440]; aspect [1:4, 4:1]; PNG |
wan2.5-t2i-preview **recommended** | Wanxiang 2.5 preview—flexible sizing within pixel/aspect bounds (e.g. 768×2700; 2.2 and below cap single side at 1400) | |
| wan2.2-t2i-flash | Wanxiang 2.2 flash—~50% faster than 2.1 | Resolution: both sides in [512, 1440]; PNG |
| wan2.2-t2i-plus | Wanxiang 2.2 plus—better stability vs 2.1 | |
| wanx2.1-t2i-turbo | Wanxiang 2.1 flash | |
| wanx2.1-t2i-plus | Wanxiang 2.1 plus | |
| wanx2.0-t2i-turbo | Wanxiang 2.0 flash | |
Request body
| Field | Type | Required | Description |
|---|
| model | string | Yes | e.g. qwen-image-plus or qwen-image-max. |
| content | string | Yes | Image description text. |
| parameters | object | No | Generation controls. |
| └─ negative_prompt | string | No | Things to avoid. |
| └─ prompt_extend | boolean | No | AI prompt expansion (default true). |
| └─ watermark | boolean | No | Add watermark or not. |
| └─ size | string | No | e.g. 1328*1328, 1024*1024; width and height each 512–1440. |
| └─ n | integer | No | Number of images, 1–4, default 4. Billed per image—use 1 for tests. |
| └─ seed | integer | No | Seed in [0, 2147483647]. Same seed tends to stabilize output but is not a hard guarantee. |
Response
200 OK
| Field | Type | Description |
|---|
| created | integer | Unix timestamp. |
| data | array | Results. |
| └─ url | string | Download URL. |
| └─ b64_json | string | Base64 if requested. |
| └─ revised_prompt | string | Prompt after AI refinement. |
Request example
{
"model": "wan2.2-t2i-flash",
"prompt": "A kitten running on grass, cinematic look, natural light and shadow",
"parameters":{
"size": "960*1390"
}
}
Response example
{
"created": 1713833628,
"data": [
{
"url": "https://example.com/qwen_output_image.png",
"b64_json": "",
"revised_prompt": ""
}
]
}
Tips
- Chinese semantics: Qwen is strong on idioms, couplets, and Chinese motifs (e.g. Yueyang Tower, blue-and-white porcelain).
- Prompt extend: Keeping
prompt_extend: true usually yields richer detail.
