falText to audioAvailable now
falbytedance/seed-audio-1.0
bytedance/seed-audio-1.0 is a text to audio tool from fal that runs in the background and returns audio. Pay as you go from $0.24375 per minute, with one API key.
Try itfrom $0.24375 / minute
Pricing
$0.24375 per minute of output audio, up to 2 minutes. The final charge comes from usage.
Limits
- Runs
- In the background
- Returns
- audio
- Longest queue wait
- 3600s
- Run deadline
- 1800s
- Largest inline input
- 1024 KB
- Largest input file
- 500 MB
- Largest output
- 4768 MB
- Outputs per run
- 16
Input
| Field | Kind | Default | Description |
|---|---|---|---|
prompt required | text | — | Prompt or text to synthesize. Reference audio inputs by order with @Audio1, @Audio2, @Audio3. |
voice | text | — | Voice to use for synthesis: either a preset voice name or a cloned voice id. |
audio_urls | URLs or files | — | Up to 3 reference audio URLs, referenced in prompt as @Audio1, @Audio2, @Audio3. Each clip: up to 30s, 10MB, wav/mp3/pcm/ogg_opus. |
image_url | URL or file | — | A single reference image URL (jpeg/png/webp, up to 10MB). Cannot be combined with audio references. |
output_format | one of wav, mp3, pcm, ogg_opus | mp3 | Output audio format. |
sample_rate | one of 8000, 16000, 24000, 32000, 44100, 48000 | 24000 | Sample rate of the output audio in Hz. |
speed | number 0.5 to 2 | 1 | Speech speed. 1.0 is normal speed, 0.5 is half speed, 2.0 is double speed. |
volume | number 0.5 to 2 | 1 | Volume. 1.0 is normal volume, 0.5 is half, 2.0 is double. |
pitch | number (whole) -12 to 12 | 0 | Voice pitch shift in semitones. 0 is normal pitch, -12 lowers by one octave, 12 raises by one octave. |
multilingual | true or false | false | Use the multilingual model variant, which handles non-English and mixed-language prompts better. |
Same request in code
curl https://api.spiral.ai/v1/runs \
-H "Authorization: Bearer $SPIRAL_API_KEY" \
-H "Content-Type: application/json" \
-H "Idempotency-Key: $(uuidgen)" \
-d '{
"provider": "fal",
"model": "bytedance/seed-audio-1.0",
"input": {
"prompt": "Here'\''s a quick look at your day: you'\''ve got three meetings, one lunch, and just enough time in between to grab a coffee and relax."
}
}'