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LumaText to image

Luma UNI-1

Balanced unified image model for creation, precision editing, and multi-reference control

POSTauray-serverless/luma/uni-1
openapi.jsonllms.txt

One of Auray's catalogue models: the same key, the same credits, the same job lifecycle as every other address.

Its request shape is published below. Whether it runs right now is GET /v1/catalogue's word, with no key needed: its addresses say connected for an address that runs, and a submit to any other is refused before anything is charged — described answers 501 model_not_connected, paused 503 model_disabled.

Category text-to-image · Scope image:write (or external:write on an older key) · Price Credits per megapixel (counted as width*height): 0.9573. From 4.179 to 8.1071 megapixels a request. Priced up to height 2784, width 2912; past that a request is refused before any charge. Plus 0.25 credits per input image (counted as items:inputs.seedImage+inputs.referenceImages), up to 10 input images. A request that asks for height=1248, width=3360 is refused before any charge: it has no price on this model. A request that asks for height=2912, width=1440 is refused before any charge: it has no price on this model. A request that asks for height=3360, width=1248 is refused before any charge: it has no price on this model. Quoted when you submit, at the most the request can cost; the charge settles to what the job cost and never above the quote. The submit's answer carries the quote as credits_quoted, and credits_charged says what has been taken.

#Input

FieldTypeRequiredDefaultDescription
inputsobjectno—
inputs.seedImagestringno—Image used as a starting point for the generation (an http(s) URL; upload a local file first and send its read URL). A URL.
inputs.referenceImagesstring[]no—List of reference images (an http(s) URL; upload a local file first and send its read URL). Documented range: 1 to 9.
positivePromptstringyes—Text prompt describing elements to include in the generated output. Documented range: 2 to 6,000 characters.
widthintegerno2912Width of the generated media in pixels.
heightintegerno1440Height of the generated media in pixels.
settingsobjectno—
settings.searchbooleanno—When enabled, the model searches the web for visual references before generating. This improves accuracy for prompts that reference real-world subjects, landmarks, or products.
settings.stylestringno"auto"Applies a style preset to the generation. One of "auto", "manga".
outputTypestringno"URL"Image output type. One of "URL".
outputFormatstringno"JPG"Specifies the file format of the generated output. The available values depend on the task type and the specific model's capabilities. - `JPG`: Best for photorealistic images with smaller file sizes (no transparency). - `PNG`: Lossless compression, supports high quality and transparency (alpha channel). - `WEBP`: Modern format providing superior compression and transparency support. - `MP4`: Widely supported video container (H.264), recommended for general use. - `WEBM`: Optimized for web delivery. - `MOV`: QuickTime format, common in professional workflows (Apple ecosystem). - `GIF`: Animated image format (no audio), suitable for short loops or previews. - `MP3`: Compressed audio, smaller file size. - `WAV`: Uncompressed, high-quality audio. - `FLAC`: Lossless compression. - `OGG`: Open-source compressed audio format (Vorbis codec). - `SVG`: Scalable Vector Graphics. - `TIFF`: High-quality output supporting layers. - `GLB`: Binary glTF format for 3D models, including geometry, textures, and PBR materials. > [!NOTE] > **Transparency**: If you are using features like background removal or LayerDiffuse that require transparency, you must select a format that supports an alpha channel (e.g., `PNG`, `WEBP`, `TIFF`). `JPG` does not support transparency. One of "JPG", "PNG", "WEBP".
outputQualityintegerno95Compression quality of the output. Higher values preserve quality but increase file size. Documented range: 20 to 99.
safetyobjectno—
safety.checkContentbooleanno—Enable or disable content safety checking. Increases total generation time. Always on: a false is sent as true.
advancedFeaturesobjectno—
advancedFeatures.watermarkobjectno—
advancedFeatures.watermark.textstringno—Watermark text. Documented range: 2 to 32 characters.
advancedFeatures.watermark.imagestringno—Watermark image (an http(s) URL; upload a local file first and send its read URL). A URL.
advancedFeatures.watermark.displayPositionstringno—Watermark position. One of "top-left", "top-center", "top-right", "center-left", "center-center", "center-right", "bottom-left", "bottom-center", "bottom-right", "tiled".
advancedFeatures.watermark.opacitynumberno—Watermark opacity. Documented range: 0.1 to 1.
advancedFeatures.watermark.fontColorstringno—Text color in hex format.
advancedFeatures.watermark.bgColorstringno—Background color in hex format.
idempotency_keystringno—Your own name for this request. Send the same one twice and the second call is answered with the first request rather than charged again. Idempotency-Key: as a header is accepted as an alias — that is the spelling a retrying proxy replays, and the one to use when running a model on auray.run, where a request that outlives its connection is answered 504 and recovered by replay. Omit it and the platform mints one. 1 to 64 characters.

#Rules

Across fields, as the model's documentation states them. Each is judged before anything is charged — warned with a Deprecation header until enforcement starts — and listed as JSON Schema under x-auray-rules in the openapi.json.

  • Send height whenever width is sent. Send width whenever height is sent.
  • When inputs.seedImage is sent, do not send settings.style.
  • When inputs.seedImage is sent, do not send settings.search.
  • When width is sent or height is sent, width and height must be one of these: 3K (~3:1): width 3360, height 1248; 3K (~2:1): width 2912, height 1440; 3K (~16:9): width 2784, height 1504; 3K (~3:2): width 2464, height 1696; 3K (1:1): width 2048, height 2048; 3K (~2:3): width 1696, height 2464; 3K (~9:16): width 1504, height 2784; 3K (~1:2): width 1440, height 2912; 3K (~1:3): width 1248, height 3360.
  • When inputs.seedImage is sent, inputs.referenceImages must hold at most 8 items.
  • When settings.style is "manga", width and height are required. When settings.style is "manga", width and height must be one of these: width 1696, height 2464; width 1504, height 2784; width 1440, height 2912; width 1248, height 3360.
  • When advancedFeatures.watermark is sent: send exactly one of advancedFeatures.watermark.text or advancedFeatures.watermark.image.

#Example

curl -X POST https://queue.auray.run/auray-serverless/luma/uni-1 \
  -H "Authorization: Bearer $AURAY_API_KEY" \
  -H "content-type: application/json" \
  -d '{
  "positivePrompt": "a brass orrery on a walnut desk, morning light from a window to the left"
}'

The same body on https://auray.run runs synchronously and answers the result — unless it usually takes longer than a run may hold its connection, which is refused 400 model_not_synchronous before anything is charged. Options — ?webhook=, ?wait=, priority and timeout headers — are on Submit a request.

#Machine contracts

  • openapi.json — this page as an OpenAPI 3.1 document, public.
  • llms.txt — the same, written for an agent.

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