Recraft 20b

POST/v1/run

Recraft 20b is Recraft's advanced text-to-image AI model. Create photorealistic images, illustrations, and concept art from natural language descriptions with exceptional detail and prompt adherence.

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 recraft/recraft-20b.

Default: recraft/recraft-20b

stringpromptrequired

Text prompt that describes the image or asset to generate.

Optional<string>aspect_ratio

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

Optional<string>style

The style of the generated images. Vector images cost 2X as much.

Allowed values: any, realistic_image, digital_illustration, vector_illustration, realistic_image/b_and_w, realistic_image/enterprise, realistic_image/hard_flash, realistic_image/hdr, realistic_image/motion_blur, realistic_image/natural_light, realistic_image/studio_portrait, digital_illustration/2d_art_poster, digital_illustration/2d_art_poster_2, digital_illustration/3d, digital_illustration/80s, digital_illustration/engraving_color, digital_illustration/glow, digital_illustration/grain, digital_illustration/hand_drawn, digital_illustration/hand_drawn_outline, digital_illustration/handmade_3d, digital_illustration/infantile_sketch, digital_illustration/kawaii, digital_illustration/pixel_art, digital_illustration/psychedelic, digital_illustration/seamless, digital_illustration/voxel, digital_illustration/watercolor, vector_illustration/cartoon, vector_illustration/doodle_line_art, vector_illustration/engraving, vector_illustration/flat_2, vector_illustration/kawaii, vector_illustration/line_art, vector_illustration/line_circuit, vector_illustration/linocut, vector_illustration/seamless

Default: realistic_image

Optional<array<object>>colors

An array of preferable colors

Default:

Optional<string>style_id

The ID of the custom style reference (optional)

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": "recraft/recraft-20b",
  "prompt": "a red panda in Kyoto",
  "aspect_ratio": "21:9"
}'

# 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": "recraft/recraft-20b",
  "status": "running"
}