Stable Audio 3 Small Music Base Audio Inpainting

stable-audio-3-small-music-base-audio-inpainting

Stable Audio 3 Small Music Base audio inpainting is the foundational 459 million parameter checkpoint for editing or filling selected music segments guided by text prompts.

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Details

Accepts: audio

Pricing

Price: 4.16 cr / clip

Prices in credits (1 credit = $0.01).

Data schema

Input

Field	Type	Description
seed	—	Random seed for reproducible outputs. Omit for a random seed.
promptrequired	string	Text description guiding how the masked region is regenerated.
bitrate	string	Audio bitrate for compressed output formats (e.g., mp3, aac, opus). Format e.g. '192k' or '320k'. Ignored for lossless formats (wav, flac).
audio_urlrequired	string	Source audio. Only the masked region is regenerated.
sync_mode	boolean	If True, the audio is returned inline as a data URI and the result is not saved to the request history.
output_format	stringenum: mp3, wav, flac, ogg, opus, m4a…	Container format for the generated audio output.
guidance_scale	number	Classifier-free guidance scale. Higher values follow the prompt more strictly; ~7.0 is a good starting point for base checkpoints.
negative_prompt	string	Text description of qualities to avoid in the output.
mask_end_secondsrequired	number	End of the region to regenerate, in seconds.
mask_start_secondsrequired	number	Start of the region to regenerate, in seconds.
num_inference_steps	integer	Number of sampling steps. Base (non-distilled) checkpoints typically need ~50 for good quality.
enable_safety_checker	boolean	Enable NSFW content safety checking.
enable_prompt_expansion	boolean	If True, the prompt will be expanded using an LLM for more detailed and higher quality results.

Output

Field	Type	Description
seed	integer	The random seed used for generation.
audio	—	The generated audio clip.
prompt	string	The prompt used for generation.