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Seed Audio 1.0

Integrate

Model id bytedance/seed-audio-1.0
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.com/v1/run/bytedance/seed-audio-1.0?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.com/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"

Up to $0.154 per run charged by actual usage, the rest is refunded Run it on this page

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ByteDance Audio

Speech and audio generator driven by text, up to 3 reference audio clips or one image, with pitch and speed controls

ByteDance · Audio

Your first result goes here

Build a request below and run it with your API key. Outputs are copied to our storage, kept forever or 7 days for free.

Build a request

Controls are generated from the model schema. The code and the price update as you change them.

•required 88 / 2048

Synthesis prompt or text, with ordered audio references expressed as @Audio1 for the first input, @Audio2 for the second, and @Audio3 for the third.

default 1

Speech rate multiplier: 1.0 gives normal speed, 0.5 gives half speed, and 2.0 gives twice the speed.

Advanced audios · image · output_format · sample_rate · voice · volume · pitch · multilingual · enable_safety_checker
audio_urls
Drop a file, or · up to 3

Supply reference audio through at most 3 URLs, with each file in wav/mp3/pcm/ogg_opus format and limited to 10 MB and 30 seconds. In the prompt, identify the clips with @Audio1, @Audio2, @Audio3.

image_url
Drop a file, or

Provide one image reference by URL only when no audio references are supplied. The image must be jpeg/png/webp and no larger than 10 MB.

output_format default mp3

Format for the generated audio.

sample_rate default 24000

Sampling frequency in Hz for the output audio.

Select a synthesis voice by supplying either its preset name or, for a cloned voice, its ID.

default 1

Volume multiplier: 1.0 gives normal volume, 0.5 gives half the volume, and 2.0 gives twice the volume.

default 0

Pitch adjustment for the voice, measured in semitones: 0 leaves pitch unchanged, -12 shifts it down an octave, and 12 shifts it up an octave.

POST /run/bytedance/seed-audio-1.0?wait=20 quote → $0.154
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.com/v1/run/bytedance/seed-audio-1.0?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.com/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"

Run this request

Your key stays in this browser: it is sent only to the Doitong API and saved (localStorage) only if you tick Remember. Get an API key

About Seed Audio 1.0

Synthesizes audio from a prompt of up to 2048 characters. A preset or cloned `voice` can be chosen, and up to 3 reference clips can be cited in the prompt as @Audio1 to @Audio3; a single reference image works instead, but not together with audio. Output is wav, mp3, pcm or ogg_opus at sample rates from 8000 to 48000 Hz. Speed and volume range 0.5 to 2, pitch shifts -12 to 12 semitones, and `multilingual` switches to a variant for mixed-language text.

Parameters

Send either the canonical name or the native name, not both. Canonical names

NameType DefaultAllowed Description
promptrequired
Typestring
≤ 2,048 characters
Synthesis prompt or text, with ordered audio references expressed as @Audio1 for the first input, @Audio2 for the second, and @Audio3 for the third.
voiceoptional
Typestring | null
Select a synthesis voice by supplying either its preset name or, for a cloned voice, its ID.
audio_urlsoptional audios
Typeurl[] · audio
≤ 3 items
Supply reference audio through at most 3 URLs, with each file in wav/mp3/pcm/ogg_opus format and limited to 10 MB and 30 seconds. In the prompt, identify the clips with @Audio1, @Audio2, @Audio3.
image_urloptional image
Typeurl · image
Provide one image reference by URL only when no audio references are supplied. The image must be jpeg/png/webp and no larger than 10 MB.
output_formatoptional
Typeenum
Defaultmp3
wavmp3pcmogg_opus
Format for the generated audio.
sample_rateoptional
Typeenum
Default24000
80001600024000320004410048000
Sampling frequency in Hz for the output audio.
speedoptional
Typenumber
Default1
0.5 – 2
Speech rate multiplier: 1.0 gives normal speed, 0.5 gives half speed, and 2.0 gives twice the speed.
volumeoptional
Typenumber
Default1
0.5 – 2
Volume multiplier: 1.0 gives normal volume, 0.5 gives half the volume, and 2.0 gives twice the volume.
pitchoptional
Typeinteger
Default0
-12 – 12
Pitch adjustment for the voice, measured in semitones: 0 leaves pitch unchanged, -12 shifts it down an octave, and 12 shifts it up an octave.
multilingualoptional
Typeboolean
Defaultfalse
Model variant selection: enabling the multilingual variant improves handling when prompts mix languages or use a language other than English.
enable_safety_checkeroptional
Typeboolean
Defaulttrue
Screening can be relaxed by setting false, provided the caller is authorized.
required Canonical name, also accepted

File parameters take a public https:// URL, a data: URI up to 10 MB, or the file_url of an upload. Files

Output

GET /requests/req_8k2m4q7x1z9c3v5b6n0p2r4t
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "bytedance/seed-audio-1.0",
  "status": "succeeded",
  "created_at": "2026-10-20T12:00:00Z",
  "started_at": "2026-10-20T12:00:02Z",
  "completed_at": "2026-10-20T12:00:09Z",
  "queue_position": null,
  "cost": {
    "credits": 154,
    "usd": "0.154",
    "charged": 154,
    "refunded": 0
  },
  "input": {
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
  },
  "output": {
    "audio": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp3",
      "content_type": "audio/mpeg",
      "file_name": "0-output.mp3",
      "file_size": 1843200,
      "duration": 5,
      "channels": 1,
      "sample_rate": 1,
      "bitrate": "string"
    }
  },
  "outputs": [
    {
      "type": "audio",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp3",
      "content_type": "audio/mpeg",
      "file_size": 1843200,
      "duration": 12,
      "stored": true
    }
  ],
  "error": null,
  "metrics": {
    "inference_seconds": 6.8
  },
  "urls": {
    "self": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
Your files, your choiceEvery outputs[].url is a copy on our storage: kept forever (paid per GB-month) or 7 days for free, by your account setting or ?storage=.
Same shape on every modeltype, url, content_type, width, height and duration, for images, video and audio alike. output is the model’s own result object.
Fields of output
audio
object {url, content_type, file_name, file_size, duration, channels, sample_rate, bitrate}Audio file produced by generation.

For AI agents: this page as Markdown is at https://doitong.com/developers/models/bytedance/seed-audio-1.0.md. All models and guides: https://doitong.com/developers/llms.txt