seedinteger
The same seed and the same prompt given to the same version of the model will output the same image every time.
Z Image Base
alibaba/z-image/baseZ Image Base by Alibaba - generate stunning images from text prompts with state-of-the-art AI. Supports multiple aspect ratios, styles, and high-resolution output for creative and commercial use.
Try the model
Playground
Input
The prompt to generate an image from.
Additional Settings More
Customize your input with more control.
The aspect ratio of the generated image. Allowed values: 21:9, 16:9, 3:2, 4:3, 5:4, 1:1, 4:5, 3:4, 2:3, 9:16.
The format of the generated image. Allowed values: jpeg, png.
The same seed and the same prompt given to the same version of the model
will output the same image every time.
ResultExample
What would you like to do next?
Examples
Select an example to load its inputs and result into the playground.
- Open result ↗
Input
{ "prompt": "Grandmother knitting by a window, an empty chair by her" }
Human preference
Arena
Elo ratings from blind side-by-side votes, compared with other image and video models.
Rankings sourced from Artificial Analysis Arena
- Leaderboard
- Text to Image
- Rank
- #87 of 106
- Elo
- 891 ±17
- Gap to #1
- −331
Text-to-image arena: people pick the better of two images generated from the same prompt, without seeing the model names.
- #82ERNIE Image907±10
- #83Qwen Image903±18
- #84P-Image900±18
- #85FLUX.1 Krea [dev]896±39
- #86Vidu Q2896±17
- #87Z-Image Base891±17
- #88GLM-Image885±18
- #89Lucid Origin Ultra877±17
- #90FLUX1.1 [pro]870±19
- #91Lucid Origin Fast860±18
Z Image Base
Z-Image Base is Alibaba's 6B open text-to-image model: photorealistic results and bilingual text rendering at a low per-image cost.
Fields
| Field | Type | Default | Notes |
|---|---|---|---|
prompt | string, required | — | Text instruction. |
aspect_ratio | 21:9 / 16:9 / 3:2 / 4:3 / 5:4 / 1:1 / 4:5 / 3:4 / 2:3 / 9:16 | — | Output shape. |
output_format | jpeg / png | png | Output file format. |
seed | integer | random | Fix it to compare prompt changes. |
Billing
$0.01 per image.
| Request | Price |
|---|---|
| One image | $0.01 |
Failed runs are not charged.
Prompting
- Write subject, setting, style, then light and color.
- Quote text that must appear.
Limits
- One image per request.
Also on SandBase
Related: alibaba/z-image/turbo/edit, z-image/turbo.
Start building
Send your first request
Submit this model through the SandBase Unified Run API.
# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
-X POST "https://api.sandbase.ai/v1/run" \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
-H "Content-Type: application/json" \
--data-binary @- <<'SANDBASE_JSON'
{
"model": "alibaba/z-image/base",
"prompt": "Grandmother knitting by a window, an empty chair by her",
"output_format": "png"
}
SANDBASE_JSON
)
run_id=$(printf '%s' "$result" | jq -r .id)
for attempt in $(seq 1 120); do
status=$(printf '%s' "$result" | jq -r .status)
case "$status" in completed|failed|timeout) break ;; esac
sleep 2
result=$(curl --fail-with-body --silent \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
"https://api.sandbase.ai/v1/run/$run_id")
done
status=$(printf '%s' "$result" | jq -r .status)
[ "$status" = completed ] || { echo "Generation ended: $status" >&2; exit 1; }
printf '%s\n' "$result"2. Authentication
Create a SandBase API key and set it in your server environment. All requests use Bearer authentication.
export SANDBASE_API_KEY="YOUR_API_KEY"Keep the key on your server. Do not expose it in browser code or commit it to a repository.
3. Queue
Submit a request
POST to /v1/run with this model ID and its inputs. The request example above includes submission and polling.
Fetch request status and result
Use the returned run ID to poll until the status is completed, failed or timeout. Read output only after completed.
curl "https://api.sandbase.ai/v1/run/$RUN_ID" \
-H "Authorization: Bearer $SANDBASE_API_KEY"4. Files
Hosted files
Pass a publicly accessible file URL in the model’s image, video or audio field. Supported formats and limits are shown beside each Playground input.
Uploading images
Use the upload or replace control on supported image fields in the Playground. Video URL fields accept a hosted driving video; they do not imply video-upload support.
5. Schema
Input
promptstringrequired
The prompt to generate an image from.
aspect_ratiostring
The aspect ratio of the generated image.
Possible values: "21:9", "16:9", "3:2", "4:3", "5:4", "1:1", "4:5", "3:4", "2:3", "9:16"
output_formatstring
The format of the generated image.
Default: "png"
Possible values: "jpeg", "png"
{
"model": "alibaba/z-image/base",
"prompt": "Grandmother knitting by a window, an empty chair by her",
"output_format": "png"
}Output
A completed run exposes its result in output. The following is the model’s saved example, not a new generation.
[
{
"source": "Alibaba Model Studio schema mirror",
"source_url": "https://www.alibabacloud.com/help/en/model-studio/",
"url": "https://static.sandbase.ai/examples/d8e98731-1ab2-4ee4-a6ff-1af761a13f00/output/78926b85-7c91-42b4-8167-443254ee5517.png"
}
]