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by ByteDanceAudio

Seed Speech 2.0

41 voices with tone set in plain language

  • 41 voices
  • 10 languages
Try Seed Speech 2.0

From 11 credits per 1,000 characters≈ $0.11

What it's like to use

Seed Speech 2.0 is ByteDance's text-to-speech model: 41 preset voices, and you describe the delivery in plain words, like "calm and warm, a little slower". Several voices speak more than one language in the same timbre, and the price is set by the script length, so you know the cost before you start.

Good for

  • Voice-overs for explainers and product clips
  • The same voice reading English, Japanese, Spanish or German
  • Character voices with a one-line note on how they talk

What Seed Speech 2.0 can do

Each mode opens in the studio with Seed Speech 2.0 already picked. The price shows before you generate.

Text to SpeechTurn a script into natural speech in hundreds of voices.From 11 creditsper 1,000 characters

How to prompt Seed Speech 2.0

  1. Write the delivery as a sentence in the instructions field: tone, emotion, pace or volume. It shapes the reading and isn't spoken.
  2. Keep each request to one voice; for a cast, run each character separately with the same note every time.
  3. Leave language on auto unless a short line keeps getting misread.

Settings worth knowing

Everything else has a sensible default, so you can type a prompt and go.

voice_id41
Pick from the available voices.
language10
The language of the speech.
speed0.5–2
Speaking pace.
output_formatmp3 · opus
File type of the result.

How it compares

Same kind of job, different strengths and prices.

MiniMax Speech 2.8 HD offers hundreds of voices and set emotions; Seed Speech is simpler to direct with plain-language notes.

Seed Speech 2.0This modelFrom 11 credits
Gemini 3.8 Flash TTSExpressive speech that acts out cues like [laughing]From 0.05 creditsper second of audioMiniMax Speech 2.8 HDHigh-fidelity speech in 400+ voices with emotion controlFrom 18 creditsper 1,000 charactersGemini 3.8 Flash-Lite TTSFast, lightweight speech in 30 voicesFrom 0.03 creditsper second of audioGrok TTS71 voices across 20 languages with speech tagsFrom 3 creditsper 1,000 charactersMiniMax Speech 2.8 TurboFast speech in 400+ voices with emotion controlFrom 11 creditsper 1,000 charactersQwen3 TTSOpen-source speech with tone and pace set in plain wordsFrom 11 creditsper 1,000 characters

Questions about Seed Speech 2.0

How much does Seed Speech 2.0 cost?

On PopNow, the cheapest run of Seed Speech 2.0 costs 11 credits ($0.11) per 1,000 characters. You pay with credits (1 credit = $0.01), the exact cost shows on the Generate button before you start, and failed generations are refunded automatically.

What can Seed Speech 2.0 do?

On PopNow, Seed Speech 2.0 works in these modes: Text to Speech. Pick one in the studio and add a prompt or an upload.

How should I write prompts for Seed Speech 2.0?

Write the delivery as a sentence in the instructions field: tone, emotion, pace or volume. It shapes the reading and isn't spoken. Keep each request to one voice; for a cast, run each character separately with the same note every time. Leave language on auto unless a short line keeps getting misread.

Seed Speech 2.0 or MiniMax Speech 2.8 HD?

MiniMax Speech 2.8 HD offers hundreds of voices and set emotions; Seed Speech is simpler to direct with plain-language notes.

Do I need to install anything to use Seed Speech 2.0?

No. Seed Speech 2.0 runs in your browser on PopNow: write a prompt or add a file, choose the settings and download the result. Sign up and you can generate straight away.

Building an app? See the Seed Speech 2.0 API →

Make something with Seed Speech 2.0

Type an idea, pick your settings and see the price before you hit Generate.

Try Seed Speech 2.0 All models