> ## Documentation Index > Fetch the complete documentation index at: https://docs.stability.ai/llms.txt > Use this file to discover all available pages before exploring further. # Fetch Audio Result > Fetch the result of an audio generation by ID. Poll this endpoint after starting an async audio generation. Returns `202` while in-progress, `200` with the audio when complete. ## OpenAPI ````yaml /openapi.json get /v2beta/audio/results/{id} openapi: 3.0.1 info: version: v2beta title: StabilityAI REST API description: >- Welcome to the Stability Platform API. As of March 2024, we are building the REST v2beta API service to be the primary API service for the Stability Platform. All AI services on other APIs (gRPC, REST v1, RESTv2alpha) will continue to be maintained, however they will not receive new features or parameters. If you are a REST v2alpha user, we strongly recommend that you adjust the URL calls for the specific services that you are using over to the equivalent REST v2beta URL. Normally, this means simply replacing "v2alpha" with "v2beta". We are not deprecating v2alpha URLs at this time for users that are currently using them. #### Authentication You will need your [Stability API key](https://platform.stability.ai/account/keys) in order to make requests to this API. Make sure you never share your API key with anyone, and you never commit it to a public repository. Include this key in the `Authorization` header of your requests. #### Rate limiting This API is rate-limited to 150 requests every 10 seconds. If you exceed this limit, you will receive a `429` response and be timed out for 60 seconds. If you find this limit too restrictive, please reach out to us via [this form](https://kb.stability.ai/knowledge-base/kb-tickets/new). #### Support Please see our [FAQ](https://platform.stability.ai/faq) for answers to common questions. If you have any other questions or concerns, please reach out to us via [this form](https://kb.stability.ai/knowledge-base/kb-tickets/new). To see the health of our APIs, please check our [Status Page](https://stabilityai.instatus.com/). servers: - url: https://api.stability.ai security: - STABILITY_API_KEY: [] tags: - name: Edit description: >- Tools for editing your own and generated images. **[Erase](/docs/api-reference#tag/Edit/paths/~1v2beta~1stable-image~1edit~1erase/post)** The Erase service removes unwanted objects, such as blemishes on portraits or items on desks, using image masks. **[Outpaint](/docs/api-reference#tag/Edit/paths/~1v2beta~1stable-image~1edit~1outpaint/post)** The outpaint service inserts additional content in an image to fill in the space in any direction, allowing you to "zoom-out" of an image. **[Inpaint](/docs/api-reference#tag/Edit/paths/~1v2beta~1stable-image~1edit~1inpaint/post)** The Inpaint service modifies images by filling in or replacing specified areas with new content based on the content of a "mask" image. **[Search and Replace](/docs/api-reference#tag/Edit/paths/~1v2beta~1stable-image~1edit~1search-and-replace/post)** The Search and Replace service, similar to inpaint, allows to replace specified areas with new content, but this time with the help of a prompt instead of a mask. The service will automatically segment the object and replace it with the object requested in the prompt. **[Search and Recolor](/docs/api-reference#tag/Edit/paths/~1v2beta~1stable-image~1edit~1search-and-recolor/post)** The Search and Recolor service is another derivative of the inpaint service and provides the ability to change the color of a specific object in an image using a prompt. The Search and Recolor service will automatically segment the object and recolor it using the colors requested in the prompt. **[Remove Background](/docs/api-reference#tag/Edit/paths/~1v2beta~1stable-image~1edit~1remove-background/post)** The Remove Background service accurately segments the foreground from an image to removes the background. - name: Upscale description: >- Tools for increasing the size and resolution of your existing images. **[Fast Upscaler](/docs/api-reference#tag/Upscale/paths/~1v2beta~1stable-image~1upscale~1fast/post)** This service enhances image resolution by 4x using predictive and generative AI. This lightweight and fast service (processing in ~1 second) is ideal for enhancing the quality of compressed images, making it suitable for social media posts and other applications. **[Conservative Upscaler](/docs/api-reference#tag/Upscale/paths/~1v2beta~1stable-image~1upscale~1conservative/post)** This service can upscale images by 20 to 40 times up to a 4 megapixel output image with minimal alteration to the original image. The Conservative Upscaler can upscale images as small as 64x64 pixels directly to a 4 megapixel output. Use this option if you directly need a 4 megapixel output. **[Creative Upscaler](/docs/api-reference#tag/Upscale/paths/~1v2beta~1stable-image~1upscale~1creative/post)** The service can upscale highly degraded images (lower than 1 megapixel) with a creative twist to provide high resolution results. - name: Generate description: >- Tools to generate new images from text, or create variations of existing images. Our different services include: **[Stable Image Ultra](/docs/api-reference#tag/Generate/paths/~1v2beta~1stable-image~1generate~1ultra/post)**: Photorealistic, Large-Scale Output Our state of the art text to image model based on Stable Diffusion 3.5. Stable Image Ultra Produces the highest quality, photorealistic outputs perfect for professional print media and large format applications. Stable Image Ultra excels at rendering exceptional detail and realism. **[Stable Image Core](/docs/api-reference#tag/Generate/paths/~1v2beta~1stable-image~1generate~1core/post)**: Fast and Affordable Optimized for fast and affordable image generation, great for rapidly iterating on concepts during ideation. Stable Image Core is the next generation model following Stable Diffusion XL. **[Stable Diffusion 3.5 Model Suite](/docs/api-reference#tag/Generate/paths/~1v2beta~1stable-image~1generate~1sd3/post)**: Stability AI's latest base models The different versions of our open models are available via API, letting you test and adjust speed and quality based on your use case. All model versions strike a balance between generation speed and output quality and are ideal for creating high-volume, high-quality digital assets like websites, newsletters, and marketing materials. - name: Control description: >- Tools for generating precise, controlled variations of existing images or sketches. **[Sketch](/docs/api-reference#tag/Control/paths/~1v2beta~1stable-image~1control~1sketch/post)** This service upgrades sketches to refined outputs with precise control. For non-sketch images, it allows detailed manipulation of the final appearance by leveraging the contour lines and edges within the image. **[Structure](/docs/api-reference#tag/Control/paths/~1v2beta~1stable-image~1control~1structure/post)** This service excels in generating images by maintaining the structure of an input image, making it especially valuable for advanced content creation scenarios such as recreating scenes or rendering characters from models. **[Style](/docs/api-reference#tag/Control/paths/~1v2beta~1stable-image~1control~1style/post)** This service extracts stylistic elements from an input image (control image) and uses it to guide the creation of an output image based on the prompt. The result is a new image in the same style as the control image. - name: Results description: Tools for fetching the results of your async generations. - name: Stable Audio 2 description: >- Tools to generate music and sound from text or audio, or transform existing audio clips into new compositions. Our different services include: **Stable Audio 2.5**: Fast, Best-Quality, Long-Form Music & Audio Generation Our most advanced audio generation model, capable of generating up to 3-minute, 44.1 kHz stereo compositions. Stable Audio 2.5 supports text-to-audio, audio-to-audio, and audio-inpaint workflows - allowing creators to upload a sound and transform it into new instruments, styles, or genres using natural language prompts. Ideal for music production, cinematic sound design, and remixing. **Stable Audio 2.0**: High-Quality Audio Generation Built for text-to-audio and audio-to-audio generation, also capable of generating up to 3-minute, 44.1 kHz stereo. Stable Audio 2.0 is great for ideation, music demos, and ambient soundscapes. It's optimized for creative professionals seeking detailed and extended outputs from simple prompts. Stable Audio models were exclusively trained on licensed data from the [AudioSparx](https://www.audiosparx.com/) music library, honoring opt-out requests and ensuring fair compensation for creators. Additionally, Stable Audio 2.5 was pre-trained on licensed data from [Freesound](https://freesound.org/). Read more about the model capabilities [here](https://stability.ai/news/stable-audio-2-0). x-displayName: Stable Audio 2.5 - name: Stable Audio description: >- Tools to generate music and sound from text or audio, or transform existing audio clips into new compositions. Our different services include: **Stable Audio 3.0**: Fast, Best-Quality, Long-Form Music & Audio Generation Our most advanced audio generation model, capable of generating up to 6-minute, 44.1 kHz stereo compositions. Stable Audio 3.0 supports text-to-audio, audio-to-audio, and audio-inpaint workflows - allowing creators to upload a sound and transform it into new instruments, styles, or genres using natural language prompts. Ideal for music production, cinematic sound design, and remixing. Stable Audio models were exclusively trained on licensed data from the [AudioSparx](https://www.audiosparx.com/) music library, honoring opt-out requests and ensuring fair compensation for creators. Additionally, Stable Audio 3.0 was pre-trained on licensed data from [Freesound](https://freesound.org/). Read more about the model capabilities [here](https://stability.ai/news/stable-audio-3-0). x-displayName: Stable Audio 3.0 paths: /v2beta/audio/results/{id}: get: tags: - Audio Results - Stable Audio summary: Fetch Audio Result description: >- Fetch the result of an audio generation by ID. Poll this endpoint after starting an async audio generation. Returns `202` while in-progress, `200` with the audio when complete. operationId: fetchAudioResult parameters: - schema: $ref: '#/components/schemas/GenerationID' required: true name: id in: path - $ref: '#/components/parameters/Authorization' - $ref: '#/components/parameters/AcceptAudio' - $ref: '#/components/parameters/StabilityClientID' - $ref: '#/components/parameters/StabilityClientUserID' - $ref: '#/components/parameters/StabilityClientVersion' responses: '200': $ref: '#/components/responses/AudioGenerationSuccess' '202': description: Your generation is still in-progress. content: application/json: schema: type: object properties: id: $ref: '#/components/schemas/GenerationID' status: type: string enum: - in-progress description: The status of your generation. required: - id - status '400': $ref: '#/components/responses/BadRequest' '404': $ref: '#/components/responses/GenerationNotFound' '500': $ref: '#/components/responses/InternalError' x-codeSamples: - lang: python label: Python source: |- import requests generation_id = "e52772ac75b..." result = requests.get( f"https://api.stability.ai/v2beta/audio/results/{generation_id}", headers={"authorization": f"Bearer sk-MYAPIKEY", "accept": "audio/*"}, ) if result.status_code == 202: print("Generation is still in-progress.") elif result.status_code == 200: with open("./output.mp3", "wb") as f: f.write(result.content) print("Download complete!") else: raise Exception(str(result.json())) - lang: javascript label: JavaScript source: |- import axios from "axios"; import fs from "node:fs"; const generationID = "e52772ac75b..."; const response = await axios.request({ url: `https://api.stability.ai/v2beta/audio/results/${generationID}`, method: "GET", validateStatus: undefined, responseType: "arraybuffer", headers: { Authorization: `Bearer sk-MYAPIKEY`, Accept: "audio/*", }, }); if (response.status === 202) { console.log("Generation is still in-progress."); } else if (response.status === 200) { fs.writeFileSync("./output.mp3", Buffer.from(response.data)); console.log("Download complete!"); } else { throw new Error(`${response.status}: ${response.data.toString()}`); } - lang: terminal label: cURL source: |- generation_id="e52772ac75b..." http_status=$(curl -sS -f \ -o "./output.mp3" \ -w '%{http_code}' \ -H "authorization: Bearer sk-MYAPIKEY" \ -H "accept: audio/*" \ "https://api.stability.ai/v2beta/audio/results/${generation_id}") case $http_status in 202) echo "Still processing. Retrying in 10 seconds..." ;; 200) echo "Download complete!" ;; *) echo "Error: $http_status"; exit 1 ;; esac components: schemas: GenerationID: type: string minLength: 64 maxLength: 64 description: >- The `id` of a generation, typically used for async generations, that can be used to check the status of the generation or retrieve the result. example: a6dc6c6e20acda010fe14d71f180658f2896ed9b4ec25aa99a6ff06c796987c4 AudioBinaryResponse: type: string description: |- The bytes of the generated audio. The `finish-reason` and `seed` will be present as headers. format: binary AudioJSONResponse: type: object properties: audio: type: string description: The generated audio, encoded to base64. example: AAAAIGZ0eXBpc29tAAACAGlzb21pc28yYXZjMW1... seed: allOf: - $ref: '#/components/schemas/Seed' - description: The seed used as random noise for this generation. example: 343940597 finish_reason: type: string enum: - SUCCESS description: >- The reason the generation finished. It is always `SUCCESS` for this endpoint. example: SUCCESS required: - audio - finish_reason Error: type: object properties: id: type: string minLength: 1 description: >- A unique identifier associated with this error. Please include this in any [support tickets](https://kb.stability.ai/knowledge-base/kb-tickets/new) you file, as it will greatly assist us in diagnosing the root cause of the problem. example: a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4 name: type: string minLength: 1 description: >- Short-hand name for an error, useful for discriminating between errors with the same status code. example: bad_request errors: type: array items: type: string minItems: 1 description: One or more error messages indicating what went wrong. example: - 'some-field: is required' required: - id - name - errors Seed: type: number minimum: 0 maximum: 4294967294 default: 0 description: >- A specific value that is used to guide the 'randomness' of the generation. (Omit this parameter or pass `0` to use a random seed.) parameters: Authorization: schema: type: string description: >- Your [Stability API key](https://platform.stability.ai/account/keys), used to authenticate your requests. Although you may have multiple keys in your account, you should use the same key for all requests to this API. minLength: 1 required: true name: authorization in: header AcceptAudio: schema: type: string default: audio/* description: >- Specify `audio/*` to receive the bytes of the audio directly. Otherwise specify `application/json` to receive the audio as base64 encoded JSON. enum: - audio/* - application/json required: false name: accept in: header StabilityClientID: schema: type: string maxLength: 256 description: >- The name of your application, used to help us communicate app-specific debugging or moderation issues to you. example: my-awesome-app required: false name: stability-client-id in: header StabilityClientUserID: schema: type: string maxLength: 256 description: >- A unique identifier for your end user. Used to help us communicate user-specific debugging or moderation issues to you. Feel free to obfuscate this value to protect user privacy. example: DiscordUser#9999 required: false name: stability-client-user-id in: header StabilityClientVersion: schema: type: string maxLength: 256 description: >- The version of your application, used to help us communicate version-specific debugging or moderation issues to you. example: 1.2.1 required: false name: stability-client-version in: header responses: AudioGenerationSuccess: description: Generation was successful. headers: x-request-id: $ref: '#/components/headers/RequestID' content-type: description: |- The format of the generated audio. To receive the bytes of the audio directly, specify `audio/*` in the accept header. To receive the bytes base64 encoded inside of a JSON payload, specify `application/json`. examples: mpeg: description: raw bytes value: audio/mpeg mpegJSON: description: base64 encoded value: application/json; type=audio/mpeg wav: description: raw bytes value: audio/wav wavJSON: description: base64 encoded value: application/json; type=audio/wav schema: type: string finish-reason: $ref: '#/components/headers/AudioFinishReason' seed: $ref: '#/components/headers/Seed' content: audio/mpeg: example: The bytes of the generated mpeg schema: $ref: '#/components/schemas/AudioBinaryResponse' application/json; type=audio/mpeg: schema: $ref: '#/components/schemas/AudioJSONResponse' audio/wav: example: The bytes of the generated wav schema: $ref: '#/components/schemas/AudioBinaryResponse' application/json; type=audio/wav: schema: $ref: '#/components/schemas/AudioJSONResponse' BadRequest: description: Invalid parameter(s), see the `errors` field for details. content: application/json: schema: $ref: '#/components/schemas/Error' GenerationNotFound: description: 'id: the generation either does not exist or has expired.' content: application/json: schema: $ref: '#/components/schemas/Error' example: id: 2bca35116bc5431d6dc4b4ea2ef3da2f name: generation_not_found errors: - 'id: the generation either does not exist or has expired.' InternalError: description: >- An internal error occurred. If the problem persists [contact support](https://kb.stability.ai/knowledge-base/kb-tickets/new). content: application/json: schema: $ref: '#/components/schemas/Error' example: id: 2a1b2d4eafe2bc6ab4cd4d5c6133f513 name: internal_error errors: - An unexpected server error has occurred, please try again later. headers: RequestID: description: A unique identifier for this request. schema: type: string AudioFinishReason: schema: type: string enum: - SUCCESS description: >- Indicates the reason the generation finished. It is always `SUCCESS` for this endpoint. > **NOTE:** This header is absent on JSON encoded responses because it is present in the body as `finish_reason`. Seed: description: >- The seed used as random noise for this generation. > **NOTE:** This header is absent on JSON encoded responses because it is present in the body as `seed`. example: '343940597' schema: type: string securitySchemes: STABILITY_API_KEY: type: apiKey name: authorization in: header description: >- Use your [Stability API key](https://platform.stability.ai/account/keys) to authentication requests to this App. ````