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BytePlus Seed Audio 1.0 API and Playground

Create speech with BytePlus Seed Audio 1.0 via PiAPI, using permitted voice references plus speed, pitch, loudness, format, and sample-rate controls.

Get Started!

Seed Audio 1.0 API Pricing

Pay-as-you-go access through PiAPI.

Seed Audio 1.0TTS

$0.002

Voice-reference speech generation, billed per second of output audio.

Features

Capabilities from the production model page.

Voice-reference guidance

Use permitted reference audio to guide speech generation.

Developer controls

Adjust speech rate, pitch, loudness, format, and sample rate for your workflow.

Get started

Create your API key

Sign up and grab an API key from the PiAPI workspace — free credits are included on sign-up.

Top up credits

Add credits on the billing page when you are ready to scale beyond the free tier.

Call the API

POST your first task following the API docs, then poll the task until the result is ready.

Iterate in the playground

Prototype prompts and settings in the the playground above before wiring them into your product.

curl -X POST 'https://api.piapi.ai/api/v1/task' \
  -H 'X-API-Key: YOUR_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
    "model": "byteaudio",
    "task_type": "seed-audio-1.0",
    "input": {
      "text": "Welcome to PiAPI — generate natural speech from text.",
      "format": "wav",
      "sample_rate": 24000,
      "speech_rate": 0,
      "pitch_rate": 0,
      "loudness_rate": 0
    }
  }'

# → { "task_id": "9d5a…", "status": "pending" }

Frequently asked questions

What is Seed Audio 1.0 API?

Seed Audio 1.0 is a text-to-speech API available through PiAPI with voice-reference and output controls.

How is Seed Audio usage billed?

Seed Audio 1.0 usage is billed per second of generated audio output.

More questions? See the API docs.

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Seed Audio 1.0 API