Qwen Image 3 Text to Image

POST/v1/run

Qwen Image 3 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.

Request body

Submit an async generation request. The model field selects the model; other fields are model-specific input parameters.

stringmodelrequired

Model identifier. Set to alibaba/qwen-image-3/text-to-image.

Default: alibaba/qwen-image-3/text-to-image

stringpromptrequired

Text prompt describing the desired image. Supports Chinese and English. Max 5000 characters.

Optional<string>output_format

The format of the generated image.

Allowed values: jpeg, png

Default: png

Optional<integer>seed

Random seed for reproducibility (0-2147483647).

Optional<integer>num_images

Request parameter supported by this model.

Range: 1 to 6

Default: 1

Optional<string>resolution

Output resolution tier used by fal billing.

Allowed values: 1K, 2K

Default: 1K

Response Schema

The submit endpoint returns a run response. If its status is pending or running, poll GET /v1/run/{id} with the returned opaque ID until it reaches a terminal state.

stringidrequired

Opaque SandBase run identifier. Use it exactly as returned; no prefix is guaranteed.

stringstatusrequired

Current public run status.

Allowed values: pending, running, completed, failed, timeout

Optional<string>model

Public SandBase model name used for this run.

Optional<array<object>>outputs

Present only for completed runs. Each object is capability-specific; inspect the selected model schema for its fields.

Optional<object>error

Present only for failed or timeout runs. Contains a public error type and sanitized message.

Optional<string>error.type

Stable public error category.

Optional<string>error.message

Sanitized error message safe to show to clients.

Optional<object>usage

Usage details when available.

Model capabilities

array<string>capability_tagsrequired

Capabilities declared by the model registry.

Default: text-to-image

stringexecution_moderequired

Execution mode declared by the model registry.

Default: async

# 1. Submit a generation request
curl -X POST https://api.sandbase.ai/v1/run \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "alibaba/qwen-image-3/text-to-image",
  "prompt": "A cute baby koala holding a card that says \"Qwen Image 3 is now available on fal\" while on a water slide",
  "output_format": "png"
}'

# 2. If the response is still running, poll the returned id
curl https://api.sandbase.ai/v1/run/f3d2e8a1-7c4b-4a12-9d2e-123456789abc \
  -H "Authorization: Bearer $SANDBASE_API_KEY"

Response202 Accepted

{
  "id": "f3d2e8a1-7c4b-4a12-9d2e-123456789abc",
  "model": "alibaba/qwen-image-3/text-to-image",
  "status": "running"
}