Ace Step
Playground
Try it on WavespeedAI!ACE-Step is a foundation model for music generation that creates up to 4 minutes of music with lyrics from text. The model preserves fine-grained acoustic details, enabling advanced control mechanisms such as voice cloning, lyric editing, remixing, and track generation.
Features
ACE-Step: Text to Audio
ACE-Step is a foundation model for music generation that creates up to 4 minutes of music with lyrics from text descriptions.
Key Features
- Superior Quality: Achieves state-of-the-art musical coherence and lyric alignment.
- Advanced Control: Supports voice cloning, lyric editing, remixing, and track generation.
- Fine-Grained Details: Preserves acoustic details for high-quality output.
Pricing
$0.0002 per second of generated audio. For $1, you can generate 5000 seconds (83 minutes) of music.
Authentication
For authentication details, please refer to the Authentication Guide.
API Endpoints
Submit Task & Query Result
# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/wavespeed-ai/ace-step" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
"lyrics": "",
"duration": 60,
"seed": -1
}'
# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"
Parameters
Task Submission Parameters
Request Parameters
| Parameter | Type | Required | Default | Range | Description |
|---|---|---|---|---|---|
| tags | string | Yes | - | - | Comma-separated list of genre tags to control the style of the generated audio. |
| lyrics | string | No | - | - | Vocal content for the track. Use [inst] or [instrumental] for no vocals. |
| duration | number | No | 60 | 5 ~ 240 | Audio length in seconds. |
| seed | integer | No | -1 | -1 ~ 2147483647 | The random seed for reproducibility. |
Response Parameters
| Parameter | Type | Description |
|---|---|---|
| code | integer | HTTP status code (e.g., 200 for success) |
| message | string | Status message (e.g., “success”) |
| data.id | string | Unique identifier for the prediction, Task Id |
| data.model | string | Model ID used for the prediction |
| data.outputs | array | Array of URLs to the generated content (empty when status is not completed) |
| data.urls | object | Object containing related API endpoints |
| data.urls.get | string | URL to retrieve the prediction result |
| data.has_nsfw_contents | array | Array of boolean values indicating NSFW detection for each output |
| data.status | string | Status of the task: created, processing, completed, or failed |
| data.created_at | string | ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”) |
| data.error | string | Error message (empty if no error occurred) |
| data.timings | object | Object containing timing details |
| data.timings.inference | integer | Inference time in milliseconds |