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  1. SD3
CloseRouter
  • Root directory
    • OpenAI API
      • Chat Interface (Chat)
        • Generate Music
        • Generate Image (chat format)
      • Autocomplete API (Completions)
        • Creation completed
      • Image Interface (Images)
        • Create Image
        • Generate
      • Vector Generation API (Embeddings)
        • Create Embedding
      • Audio Interface (Audio)
        • Create Transcription
        • Create Translation
        • Create Voice
    • Image API
      • Midjourney
        • Face Swap Task Submission
          • Submit swap_face task
        • Task Submission
          • Execute actions (all related button actions such as UPSCALE; VARIATION; REROLL; ZOOM, etc.)
          • Drawing Variations - Simple (UPSCALE; VARIATION; REROLL)
          • Submit Blend Task (Image-to-Image)
          • Submit Describe Task (Image-to-Text)
          • Submit Imagine Task (Text-to-Image, Text-and-Image-to-Image)
          • Submit Modal (Submit Partial Repaint, ZOOM)
          • Change
          • Submit Shorten Task (prompt analysis)
        • Task Query
          • Query tasks based on the ID list
          • Get Task by Specified ID
          • Get the seed of the task image
      • Stable Diffusion (Official Format)
        • SD3
          • Stable Image Ultra
            POST
          • Stable Image Core
            POST
          • Stable Diffusion 3
            POST
        • SDXL
          • Text-to-image
      • Flux
        • Official format
          • Generate image (image)
          • Query Task (get_result)
        • OpenAI format
          • Flux
      • Ideogram (official format)
        • Generate (Text-to-Image)
        • Remix (Mixed Graph)
        • Upscale (Enlarge to High Definition)
        • Describe (描述)
    • Music Interface
      • Suno
        • Official Format (v2)
          • All interfaces
            • Convert music link to suno (upload)
            • Music generation (generations)
            • Query Task (feed)
            • Get complete music (concat)
          • Scenario 1: Generate Custom Music (with Lyrics)
            • Music generation (generations)
            • Query task (feed)
          • Scenario 2: Generate Music Directly Through Prompts (with Lyrics)
            • Music generation (generations)
            • Query Task (feed)
          • Scenario 4: Generate Music Directly Through Prompts (Instrumental Music)
            • Music generation (generations)
            • Query Task (feed)
          • Scenario 3 Generating Custom Music (Instrumental)
            • Music generation (generations)
            • Query Task (feed)
          • Scenario 5 Upload Custom Audio and Continue Writing
            • Convert music link to suno (upload)
            • Music generation (generations)
            • Query Task (feed)
          • Scenario 6 Continue writing music and obtain complete music
            • Step 1 Music Generation
            • Step 3 Expand Music
            • Step 2 Query Task
            • Step 4 Query the extended task
            • Step 6 Query the task for the complete music
            • Step 5 Obtain the complete music
          • Scenario 7 Cover Music (Music Cover, Style Modification)
            • Step 1 Music Generation
            • Step 2 Query Task
            • Step 3 Cover Music
            • Step 4 Query the extended task
          • Scenario 8 Replace Section
            • Step 1 Music Generation
            • Step 2 Query Task
            • Step 3 Replace Section
            • Step 4 Query the extended task
      • Udio
        • Create Music Based on Description - Scenario 1
        • Create Music Based on Lyrics - Scenario 2
        • Music Continuation - Scene 3
        • Get Task Progress
    • Video Interface
      • Luma
        • Official Format (v2)
          • Submit video generation task
          • Get video link without watermark
          • Query a single task
          • Extended Video
      • CogVideoX (Official Format)
        • Generations
        • Query (async-result)
      • Pika
        • generate(text)
        • generate (reference image)
        • generate (reference video/extended video)
        • feed
      • Runway
        • v1 format
          • generate(text)
          • generate (reference image)
          • feed
        • Official Format (v2)
          • Generate Video (tasks)
          • Query Task
      • Pixverse
        • generate(text)
        • feed
        • generate (reference image)
      • Keling (official format)
        • Text-to-video generation
        • Image-to-Video Generation
        • Query Task
    • PPT interface
      • Wen Duoduo (Official Format)
        • Create interface token
        • Query API Information
        • Paginated Query of PPT Templates
        • Change PPT template
        • Modify Outline
        • API Authentication
        • Parse file content
        • Generate Outline
        • Generate outline content
        • Random PPT Template
        • Directly generate PPT
        • Get PPT List
        • Load PPT Data
        • Download PPT
        • Update PPT Properties
        • Save PPT
        • Delete PPT
        • Generate outline content while asynchronously generating PPT
        • Query asynchronous PPT generation information
        • ppt to json
        • json to ppt
      • Wernicke (official format)
        • Apply for PPT generation task (one-click generation of PPT description/theme)
        • Get PPT generation status and preview page (one-click generation of PPT description/theme)
        • Generate PPT Title Outline from Description (Step-by-Step PPT Generation)
        • Apply for PPT generation task (step-by-step PPT generation)
        • Get PPT generation status and preview page (step-by-step PPT generation)
        • Generate cover preview image based on the title (template cover image preview)
        • Generate previews with different theme colors based on the title and cover preview information (set theme color)
        • Add a single slide to the PPT through task_id (insert a single slide into the PPT)
        • Generate Based on Current Template
        • Short Text File Generated PPT (File Content Parsing)
        • Get PPT generation status and preview page (file content parsing)
        • Get PPT generation status and preview page (file content parsing)
        • Generate PPT from file (file content parsing)
        • Change template (Change template)
        • Generate PPT Notes (Speech Script Notes)
        • Get PPT download link (Get download link)
    • Help Center
    • OpenAI Official Documentation
      • Audio
        • Create Translation
        • Create Transcription
      • Chat
        • Create chat completion
      • Autocompletion (Completions)
      • Embeddings
      • Fine-tuning
        • Create fine-tuning job
        • List fine-tuning jobs
        • Retrieval fine-tuning job
        • Cancel fine-tuning
        • List fine-tuning events
      • Images
        • Create Image Editing
        • Create image variations
      • Models
        • List models
        • Retrieval model
        • Delete fine-tuned model
      • Files
        • Upload File
        • Delete file
        • Retrieve file
        • Retrieve file content
        • List files
      • Moderations
        • Create Content Review
      • Assistants Beta
        • Create Assistant
        • Search Assistant
        • Modify Assistant
        • Delete Assistant
        • List assistants
        • Create auxiliary file
        • Retrieve assistant files
        • Delete auxiliary files
        • List assistant files
      • Number of Threads (Threads)
        • Create thread
        • Retrieval thread
        • Modify Thread
        • Delete Topic
      • Messages
        • Create Message
        • Retrieve messages
        • Edit Message
        • List messages
        • Retrieve message file
        • List message files
      • Run (Runs)
        • Create and Run
        • Search operation
        • Modify Operation
        • List operation
        • Submit tool output to run
        • Cancel operation
        • Create and run a thread
        • Search Operation Steps
        • List the execution steps
  • Schemas
    • Root directory
      • Schemas
        • Blend submission parameters
        • BaseCreateCompletionRequest
        • CheckActivationDTO
        • ChatMessageContent
        • Describe submission parameters
        • ChatCompletionRequestMessage
        • Discord account
        • ChatCompletionResponseMessage
        • Filter
        • ChatCompletionMessageToolCalls
        • Imagine submission parameters
        • ChatCompletionMessageToolCall
        • Map«string,object»
        • UsageInfo
        • Message «Discord Account»
        • ChatCompletionTool
        • Message«Map«string,object»»
        • CreateChatCompletionExclusiveFields
        • Message«Void»
        • FunctionObject
        • Message«string»
        • FunctionParameters
        • Modal submission parameters
        • GenerationID
        • Option
        • ImageToVideoRequest
        • Pageable
        • ContentModerationResponse
        • Page«Map«string,object»»
        • InpaintingSearchModeRequestBody
        • Page «Tasks»
        • InpaintingMaskingModeRequestBody
        • Shorten submission parameters
        • Creativity
        • Sort
        • Engine
        • SwapFace submission parameters
        • Error
        • TaskQueryDTO
        • CfgScale
        • Task
        • ClipGuidancePreset
        • Task Query Parameters
        • UpscaleImageHeight
        • Change task submission parameters
        • UpscaleImageWidth
        • Change Task Submission Parameters - Simple
        • DiffuseImageHeight
        • Executable Button
        • DiffuseImageWidth
        • Executable Button_1
        • Sampler
        • Execute action parameters
        • Samples
        • Submit Results
        • Seed
        • Activate service parameters
        • Steps
        • Account modification parameters
        • Extras
        • Account Creation Parameters
        • StylePreset
        • Account query parameters
        • TextPrompt
        • Account filtering criteria
        • TextPrompts
        • TextPrompts
        • InputImage
        • InitImage
        • InitImageStrength
        • InitImageMode
        • StepScheduleStart
        • StepScheduleEnd
        • MaskImage
        • MaskSource
        • GenerationRequestOptionalParams
        • RealESRGANUpscaleRequestBody
        • ImageToImageRequestBody
        • ImageToImageUsingImageStrengthRequestBody
        • ImageToImageUsingStepScheduleRequestBody
        • MaskingRequestBody
        • MaskingUsingMaskImageRequestBody
        • MaskingUsingInitImageAlphaRequestBody
        • TextToImageRequestBody
        • AccountResponseBody
        • BalanceResponseBody
        • ListEnginesResponseBody
        • FinishReason
        • Image
        • OrganizationMembership
      • Response
        • 401
        • 403
        • 404
        • 500
        • GenerationResponse
        • 400FromGeneration
        • 400FromUpscale
      • Example Data Model
        • Pet
        • Category
        • Tag
  1. SD3

Stable Image Ultra

POST
/sd/v2beta/stable-image/generate/ultra
Our most advanced text to image generation service, Stable Image Ultra creates the highest quality images
with unprecedented prompt understanding. Ultra excels in typography, complex compositions, dynamic lighting,
vibrant hues, and overall cohesion and structure of an art piece. Made from the most advanced models,
including Stable Diffusion 3, Ultra offers the best of the Stable Diffusion ecosystem.

Try it out#

Grab your API key and head over to Open Google Colab

How to use#

Please invoke this endpoint with a POST request.
The headers of the request must include an API key in the authorization field. The body of the request must be
multipart/form-data. The accept header should be set to one of the following:
image/* to receive the image in the format specified by the output_format parameter.
application/json to receive the image in the format specified by the output_format parameter, but encoded to base64 in a JSON response.
The only required parameter is the prompt field, which should contain the text prompt for the image generation.
Note: for the full list of optional parameters, please see the request schema below.

Output#

The resolution of the generated image will be 1 megapixel. The default resolution is 1024x1024.

Credits#

The Ultra service uses 8 credits per successful result. You will not be charged for failed results.

Request

Header Params

Body Params multipart/form-data

Request Code Samples

Shell
JavaScript
Java
Swift
Go
PHP
Python
HTTP
C
C#
Objective-C
Ruby
OCaml
Dart
R
Request Request Example
Shell
JavaScript
Java
Swift
curl --location --request POST '/sd/v2beta/stable-image/generate/ultra' \
--header 'authorization;' \
--header 'accept;' \
--form 'prompt=""'

Responses

🟢200Generation was successful.
application/json
Body

Example
{}
🟠400Invalid parameter(s), see the `errors` field for details.
🟠403Your request was flagged by our content moderation system.
🟠413Your request was larger than 10MiB.
🟠422You made a request with an unsupported language.
🟠429You have made more than 150 requests in 10 seconds.
🔴500An internal error occurred. If the problem persists [contact support](https://stabilityplatform.freshdesk.com/support/tickets/new).
Modified at 2025-07-23 10:01:53
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