Seed Audio 1.0
API model id and pricing not found. Related ByteDance speech stack: Seed-TTS 2.0 / Doubao TTS 2.0 (Oct 2025), Doubao-Seed-ASR-2.0, Seed LiveInterpret 2.0 (2025-07-24, zh<->en simultaneous interpretation with voice cloning, ~2.5-3 s lag; see entry 2025-07-24-bytedance-seed-liveinterpret-2) on Volcengine/BytePlus. Comparable: Qwen-Audio-3.1-TTS-Next, StepAudio 3 Gen.
- Input
- text, audio
- Output
- audio
- License
- proprietary
How to call it
| Provider | Model id | Endpoint / URL | Docs |
|---|---|---|---|
| BytePlus (Seed Speech console) | — | console.byteplus.com/voice/new/setting/activate?projectName=default | — |
Notable capabilities (2)
- Unified speech + SFX + ambience generation: Jointly models voice, sound effects and ambience in one framework for film-grade audio; multi-character dialogue with prompt-level timing control at 100 ms precision; up to 2 min per generation with continuation. source
- 20+ languages: Including zh, en, ja, ko, es, id, de, fr, th, vi; most languages MOS > 4.0 in ByteDance's evaluation. source
Sources: https://seed.bytedance.com/en/seedaudio1_0 · https://seed.bytedance.com/en/blog/from-speech-to-audio-creation-introducing-the-seed-audio-1-0-audio-creation-model