Seed Audio Multilingual

Seed Audio · Audio · Text → Speech

Synthesize natural speech in 20 languages — pick a named voice or clone one from a reference audio.

Model ID: seed-audio-1.0-multilingualWorkflow: bytedance/text-to-speech

20 LanguagesVoice CloningReference Audio

Try on Playground ↗

SDK API Advanced Usage Pricing

Authentication

Send your Picsart API key as a bearer token on every request.

Header

Authorization: Bearer <PICSART_API_KEY>

Make a request

One endpoint serves every model: POST to /workflows/v1/models/execute with the model id and its input in the body. The nesting is deliberate — the outer paramsis the envelope every workflow takes, and the inner one is this model's own input. Those inner names are the same unified ones the SDK takes, so a call translates one-to-one between the two — no per-vendor naming to learn.

cURL

curl -X POST 'https://api.picsart.com/workflows/v1/models/execute' \
  -H 'Authorization: Bearer $PICSART_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
  "params": {
    "model": "seed-audio-1.0-multilingual",
    "params": {
      "prompt": "A serene mountain lake at golden hour, ultra detailed"
    }
  }
}'

Async (submit & poll)

This model can run longer than the sync limit (~20s), so send it to /workflows/v1/models/submit, which returns a task id, and poll /workflows/v1/models/{taskId}/result until response.status is COMPLETED or FAILED.

cURL

# 1. Submit the job
curl -X POST 'https://api.picsart.com/workflows/v1/models/submit' \
  -H 'Authorization: Bearer $PICSART_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
  "params": {
    "model": "seed-audio-1.0-multilingual",
    "params": {
      "prompt": "A serene mountain lake at golden hour, ultra detailed"
    }
  }
}'
# → { "status": "success", "response": { "id": "task_abc123" } }

# 2. Poll until response.status is COMPLETED
curl 'https://api.picsart.com/workflows/v1/models/task_abc123/result' \
  -H 'Authorization: Bearer $PICSART_API_KEY'

Result body

{
  "status": "success",
  "response": {
    "id": "task_abc123",
    "status": "COMPLETED",
    "result": {
      "url": "https://cdn.picsart.com/…/result",
      "items": [
        {
          "url": "https://cdn.picsart.com/…/result"
        }
      ],
      "model": "seed-audio-1.0-multilingual"
    },
    "usage": {
      "credits": 5
    }
  }
}

Parameters

10 parameters, sent inside the inner paramsobject. Identical to the SDK's — one parameter set, whichever transport you use.

Parameter	Type	Required	Default	Details
`prompt` Prompt	`text`	yes	`—`	max 3000 chars
`voiceId` Voice	`catalog`	no	`en_male_tim_uranus_bigtts`	options from bytedance/v1/catalog/voices (seed-audio-1.0-multilingual)
`audioUrls` Reference Audios	`file (audio[])`	no	`—`	—
`imageUrls` Reference Image	`file (image[])`	no	`—`	—
`format` Format	`enum`	no	`wav`	wav, mp3, pcm, ogg_opus
`sampleRate` Sample Rate	`enum`	no	`44100`	8000, 16000, 24000, 32000, 44100, 48000
`speechRate` Speech Rate	`range`	no	`0`	-50–100
`loudnessRate` Loudness	`range`	no	`0`	-50–100
`pitchRate` Pitch	`range`	no	`0`	-12–12
`aigcWatermark` Watermark	`boolean`	no	`false`	—

Response

The body arrives in the gateway's status envelope, so the output is at response.result — alongside the task id, its status and the credits charged. Asset models return url plus an items array; text models return text instead.

Response body

{
  "status": "success",
  "response": {
    "id": "task_abc123",
    "status": "COMPLETED",
    "result": {
      "url": "https://cdn.picsart.com/…/result",
      "items": [
        {
          "url": "https://cdn.picsart.com/…/result"
        }
      ],
      "model": "seed-audio-1.0-multilingual"
    },
    "usage": {
      "credits": 5
    }
  }
}