Seed Audio 1.0

Name: Seed Audio 1.0
Author: ByteDance Seed

NEW

by ByteDance Seed

ByteDance Seed's speech synthesis model.

Seed Audio 1.0 renders expressive multilingual speech with natural prosody and steady pacing, using the provider-documented default voice. Serves through OpenRouter's speech API.

More details

Seed Audio 1.0 by ByteDance Seed is a standard-speed AI text-to-speech model. Seed Audio 1.0 renders expressive multilingual speech with natural prosody and steady pacing, using the provider-documented default voice. Serves through OpenRouter's speech API. Key capabilities include 278 voices across 12 languages, up to 4,096 characters per request.

Seed Audio 1.0 is priced at $0.02 per 1,000 characters of input text. You can generate speech with Seed Audio 1.0 on idapt.app alongside 200+ AI models in one workspace.

Voices

1 · 1 languages

Any of these voices can be paired with Seed Audio 1.0. Pick a model for quality and speed, a voice for character and language.

Provider Default

Multilingual · Neutral

Pricing

Cost per 1,000 characters

$0.02

Typical paragraph (~500 chars)

$0.01

Billed on input text length

Capabilities

Speed

Standard: Balanced latency & quality

Emotion Control

Natural delivery only

Max Input

4,096 characters per request

Voices

1 voices · 1 languages

Generate speech with Seed Audio 1.0 View Details

Compare Seed Audio 1.0 with

GPT-4o Mini TTSOpenAI

Grok Voice TTSxAI

Gemini 3.8 Flash TTSGoogle AI Studio

Gemini 3.1 Flash TTS PreviewGoogle AI Studio

Speech 2.8 HDMiniMax

Speech 2.8 TurboMiniMax

Frequently Asked Questions

Who created Seed Audio 1.0?

Seed Audio 1.0 was created by ByteDance Seed.

How much does Seed Audio 1.0 cost?

Seed Audio 1.0 costs $0.02 per 1,000 characters of input text. A short paragraph of roughly 500 characters costs about $0.01.

How fast is Seed Audio 1.0?

Seed Audio 1.0 is classified as a "standard" speed model. It balances synthesis latency and audio quality for general-purpose use.

What voices and languages does Seed Audio 1.0 support?

Seed Audio 1.0 supports 278 curated voices spanning 12 languages, including English, Chinese, Korean, Japanese, Spanish, and Portuguese. Every voice in the catalog can be used with this model.

Does Seed Audio 1.0 support emotion control?

Seed Audio 1.0 does not expose explicit emotion control. Delivery follows the natural intonation of the selected voice.

How much text can Seed Audio 1.0 synthesize at once?

Seed Audio 1.0 accepts up to 4,096 characters of input text per request. Longer documents are split automatically across multiple requests.

How does Seed Audio 1.0 compare to other TTS models?

Seed Audio 1.0 is one of several text-to-speech models available on idapt. Compare it with GPT-4o Mini TTS, Grok Voice TTS, Gemini 3.8 Flash TTS and more on the audio models directory.

Where can I use Seed Audio 1.0?

You can generate speech with Seed Audio 1.0 on idapt.app — in chat via the media tools, in hands-free voice mode, or through the public API. No separate API key required: idapt provides Seed Audio 1.0 alongside 200+ AI models in one professional workspace.

Generate speech with Seed Audio 1.0